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An adaptive electropneumatic end effector for constant force robot grinding with steel wire brush Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-04-20 Chosei Rei, Qiang Wang, Xinhua Yan, Liwei Fu, Peng Zhang, Chong Wang
This article introduces the design of a robot end effector, which can perform constant force grinding on a curved surface using a brush tool without accurately measuring the geometric data of the workpiece. It uses a bidirectional cylinder and spring to create a force balance system as an additional servo degree of freedom to control the grinding brush. The system adopts impedance control method, establishes
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The investigation of the effect of operating conditions in gearboxes on efficiency Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-04-20 İsmail Kaya, Cemal Baykara
Efficiency is a concept that evaluates the optimal utilization of resources, including time, energy, finances, or materials, in order to accomplish a particular goal or objective. As widely acknowledged, energy losses occur in systems involving relative motion between interacting machine elements due to friction. In the case of a gearbox, these losses can arise from tooth friction in the gear mechanism
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Design and performance evaluation of a novel fractional order PID control strategy for vehicle semi-active suspension Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-04-20 Gang Li, Han Xu, Zhiyong Ruan, Qianjie Liu, Yu Gan, Lifan Yu, Wencai Zhu, Guoliang Hu
The performance of a semi-active suspension depends on the quality of the control algorithm. Considering the limitations of conventional PID controllers within intricate nonlinear systems, such as imprecise parameter tuning and performance deterioration, we introduced a fractional-order PID (FOPID) control strategy for vehicle semi-active suspension, this approach amalgamates fractional-order theory
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Cross-domain decision method based on instance transfer and model transfer for fault diagnosis Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-04-20 Jiaqing Zhang, Yubiao Huang, Rui Liu, Zijian Wu
As the digitalization of industrial assets advances, data-driven fault diagnosis has increasingly garnered attention. However, models often underperform due to the lack of sufficient training data and the complexity of operational environments. In scenarios where a similar task with abundant data exists in the source domain, leveraging the knowledge embedded in this source data could be key to constructing
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A comparative experimental study on the rough machining methods of centrifugal three-dimensional impellers Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-04-20 Lei Dong, Minyang Chen
In this study, the processing efficiency and cost of centrifugal 3-D impeller rough machining using five-axis flank milling, linear shaft linkage high-speed milling and fixed-axis plunge milling were assessed. Furthermore, the nylon material cutting test was carried out to verify the geometrical precision of the fixed-axis plunge milling toolpath planning method used for the centrifugal 3-D impeller
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Study on time-varying meshing stiffness of helical gears with root crack faults based on improved potential energy method Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-04-20 Hongyuan Zhang, Shuo Li, Hongyun Sun
Time-varying meshing stiffness is one of the important excitations of gear transmission system, and its accurate calculation is an important basis for gear dynamics research. This paper proposes an improved potential energy method to calculate the theoretical time-varying meshing stiffness of healthy gears and helical gears with root crack faults, taking into account the non coincidence between the
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An intelligent detection approach for end-of-life power battery shell bolts Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-04-20 Jie Li, Dantong Chen, Jiahui Si
With the rapid growth of the new energy vehicle industry, the number of end-of-life power batteries, which serve as the technological core, is also increasing significantly. Unfortunately, this rise in retired power batteries has led to severe environmental pollution and resource wastage. The detection of shell bolts in power batteries has thus become a crucial step in the recycling and disassembly
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Rounding theory and method for the pitch curves of the variable center distance non-circular gear pair based on working conditions Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-04-20 Botao Li, Jiquan Hu, Dingfang Chen
Based on the working conditions of the variable center distance non-circular gear pair, this research provides the rounding theories and methods for the theoretical pitch curves of the gear pair, including establish the working conditions model of the variable center distance non-circular gear pair; group and classify the instantaneous working conditions and the instantaneous meshing arcs; design rounding
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Effects of train speed on dynamic performance of shoe-rail interaction system Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-04-13 Like Pan, Peihuo Peng, Tong Xing, Caizhi Yang, Fan He
The increase of the running speed of electric train has a certain influence on the dynamic performance of coupling of conductor rail and collector shoe. In this paper, the mechanical characteristics of coupling vibration between shoe and rail for high-speed trains are studied by using a numerical simulation method, and the effects of train speed on the vibration law of shoe-rail interaction system
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Multi-axis CNC finishing and surface roughness prediction of TC11 titanium alloy open integral micro impeller Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-04-13 HaiYue Zhao, Yan Cao, JunDe Guo, Biao Sun, Nan Geng
The titanium alloy open integral micro impeller has a strong material strength and high removal rate in the field of multi-axis CNC machining. The flow channel is tiny and the blades are thin and highly twisted. It is difficult to control the surface accuracy and prone to overcutting and undercutting. The NX2212 software post-processing module plans two distinct blade finishing process routes and verifies
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Transient MHD Darcy-Forchheimer of Williamson-Casson flow with CCS: Application of wastewater treatment Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-04-13 Taghreed H Al-Arabi, Nasser S Elgazery, Asmaa F Elelamy
With regards to the Cattaneo-Christoph (CCS) speculation, the thermal and mass transfer of a MHD Williamson-Casson ferrofluid flow through a permeable medium obeying the Darcy-Forchmeier law through an extended chamber or slab is carefully considered. The chemical reaction and Buongiorno nanofluid model were modified in the model to describe the nanoscale properties of liquid particles. Heat sources
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Structural analysis and application research for controlled strand length cutting blade of rotary guillotine cutter Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-04-09 Zhongpan Yang, Lianlian Wu, Guoxin Qin, Liming Xie, Yujun Zhai
In the tobacco processing stage leading to the production of cigarettes, there are strict technical requirements for the structure and proportion of different lengths of cut tobacco following the cutting process. Moreover, the lightweight design of the high-speed rotary-cutting blades is of significant importance during this stage. To better address issues related to the rational design of the blade
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A review of automotive intelligent and adaptive headlight beams intensity control approaches Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-04-08 Jacob Kwaku Nkrumah, Yingfeng Cai, Ammar Jafaripournimchahi
The automotive headlight stands out as a critical vehicle component, particularly emphasized during nighttime driving. The high beam, designed for optimal driver visibility on long-distance roads, traditionally relies on manual control by the driver. However, this manual control poses challenges, particularly when the high beam light temporarily blinds oncoming drivers. The resultant dazzle for drivers
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Insight into the peristaltic motion through a tapered channel with Newton’s cooling subject to viscous dissipation, Lorentz force, and velocity slip Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-04-06 Muhammad Yousuf Rafiq, Zaheer Abbas, Jafar Hasnain, Sabeeh Khaliq
Peristalsis has gained significant attention due to its numerous applications in the medical field, engineering, and manufacturing industries. Therefore, the current work intends to look into the effects of variable liquid properties on the magnetohydrodynamics of peristaltic flow exhibited by viscous fluid through a tapered channel. The viscosity of the liquid differs over the thickness of the channel
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Feasibility study on the active structural attenuation of multiple band vibrations from two dimensional continuous structures in automotive vehicles Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-04-06 Dongwoo Hong, Hojoon Moon, Byeongil Kim
Automotive engine mounts have recently begun using active elements, while prior studies did not account for the actual engine mounting position. The placement and orientation of real automobile engine mounts are considered when modeling, analyzing, and controlling a source structure with an active mounting system. A piezoelectric stack actuator connected in series with an elastomeric mount composes
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Design of constant-force mechanisms using origami Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-04-06 Junfeng Hu, Hao Pan
The origami mechanisms possess numerous unique advantages, including folding, reconfigurability, and multi-stability. The presence of multi-stability introduces a novel concept for the design of constant force mechanisms (CFM). In this study, we present a CFM with multi-segment constant-force regions by leveraging the multi-stable characteristics of the origami mechanism. The design principle behind
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Freight train air brake modelling with emergency valves Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-04-06 Fan Jiang, Kai Li, Honghua Wu, Shihui Luo
The 120-type air brake system is unique around global rail industry and critical for Chinese freight train operation. Existing research about its simulations does not include detailed models for the emergency brake valves. This paper filled this research gap by developing a detailed fluid dynamic air brake system with a focus on the emergency brake valve. The working principle of the emergency brake
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Prediction and optimization of hobbing parameters for minimizing energy consumption and gear geometric deviations Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-04-06 Jun Wang, Jun Wang, Jianpeng Dong
Improving gear precision and achieving green sustainability in gear machining are two important aspects of the gear manufacturing process. However, to achieve these two goals simultaneously, it may be necessary to make trade-offs when selecting the gear processing parameters. In this work, both energy consumption and gear geometric deviations were considered simultaneously to optimize the hobbing parameters
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Numerical simulation and experimental study on seafloor sampling of an anchor-type mud collector based on SPH-FEM coupling method Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-04-02 Jiaqi Zhang, Bin Xue, Jun Liang, Yuanming Guo, Tiejun Li, Detang Li, Yonghe Xie, Jun Wang, Yongqiang Hong
Marine sediments are important for research in scientific fields such as marine geology, environmental testing of waters, marine biology and seabed resource exploration. Among them, mud miner is an important way to obtain sediments. However, due to the complexity of the marine environment, the seabed sampling operation is a relatively difficult and complicated project. The structural design of the
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Load sensitive control characteristics of a novel two-dimensional pulse width modulated variable mechanism Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-04-02 Wu Jian, Ruan Jian, Ren Yan
Load sensing technology is a typical hydraulic technology that automatically meets load requirements by adjusting the pressure and flow at the pump outlet. Traditional load sensitive pump control systems rely on variable mechanisms to achieve such flow control characteristics. However, general variable mechanisms have complex structures and poor dynamic performance if frequently adjusted. Therefore
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A comparative analysis of CAD modeling approaches for design solution space exploration Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-03-28 Haibing Li, Yaoliang Ye, Zhongbo Zhang, Wei Yu, Wenbo Zhu
Design solution space (DSS) exploration is a pivotal process for comprehending design challenges and identifying diverse solution alternatives based on varying requirements. Computer-aided design (CAD) approaches, such as parametric design, knowledge-based design, and generative design, have proven successful in DSS exploration. However, a comparative study evaluating their performance is lacking in
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Application of hybrid control algorithm on the vehicle active suspension system to reduce vibrations Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-03-25 Tuan Anh Nguyen, Jamshed Iqbal, Thi Thu Huong Tran, Thang Binh Hoang
This research proposes a hybrid control algorithm to enhance smoothness in a vehicle’s motion. The control signal is synthesized from two separate controllers, Proportional Integral Derivative (PID) and Sliding Mode Control (SMC), to achieve superior control performance. The novelty of the proposed control algorithm lies in using a double-loop algorithm to determine the controller parameters. The algorithm
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Numerical simulation and experimental study of dip angle spray film thickness under elliptical double Gaussian sum model Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-03-25 Chengdong Li, Weihao Sun, Jianying Jin, Shuang Liu, Xu Tian
To address the problem of modeling the growth rate of coating film thickness when spraying at inclination angle, based on Gaussian sum model, it is proposed to use the elliptic double Gaussian sum model to establish the cumulative model of coating film thickness when spraying at static inclination angle of the spray gun. The differential geometry amplification theorem is used to establish the coating
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Energy absorption characteristics of stepped multi-cell columns subjected to transverse loading Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-03-25 Zhichao Li, Shunan Hu, Yongbao Yang, Haimin Zhu
Automotive bumper beam is a vital component that shields passenger and vehicle from harm and damage generated by catastrophic collapse. Previous investigations on its bending behavior have largely concentrated on multi-cell tubes with the same length, whereas stepped multi-cell structures have received less attention. In this paper, a novel stepped multi-cell configuration is proposed to improve the
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Design and test of walk-type rice potted seedling transplanting machine Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-03-25 Maile Zhou, Guibin Wang, Yan Zhang, Jiajia Yang, Zhaoxiang Wei, Hao Sun, Jianjun Yin
At present, rice potted seedling transplanting machine is mostly suitable for high-speed, large seedlings and large plant distance rice transplanting. In order to adapt to the transplanting of different types of rice potted seedlings, this study carried out theoretical research and institutional design for transplanting rice potted seedlings suitable for small seedlings and small plant spacing. A 2R
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Research on online intelligent welding system based on resistance spot welding of aluminum galvanized steel Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-03-25 Lei Chen, Jizhong Liu
The article follows a resistance spot welding system, which integrates a six-axis industrial robot, power supply, pneumatic actuator, welder, cooler, trimmer, software control system, welding analyzer, force feedback sensor and welding fixture to realize monitoring of welding quality and real-time adjustment of welding parameters. Taking the resistance spot welding of 6 series aluminum alloy and DC06
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Fault diagnosis of reciprocating compressor using Teager-Kaiser energy operator and envelope spectral feature extraction Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-03-23 Chin-Che Hou, Min-Chun Pan
This paper proposed and implemented the Teager-Kaiser energy operator (TKEO) and envelope spectral analysis techniques for the fault detection of discharge valves of a reciprocating compressor. Based on the extraction of fault features, the instantaneous frequency and amplitude of the signals due to the discharged valve based on energy identification can be effectively characterized by the TKEO that
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Influence of runner blade number on hydraulic performance and flow control in draft tube of Francis turbine Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-03-23 Jiahao Lu, Chenhan Su, Ran Tao
As a widely used core component of hydropower generation, the stable and safe operation of the Francis turbine plays a very important role in engineering applications. Therefore, the effects of different rotor blade numbers on the hydraulic performance and flow control of the draft tube of the Francis turbine are of great research value. This paper focuses on the rotor blade number 13, 14, 15, 16,
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Study of the Carreau fluid over a linearly curved stretching sheet: A numerical approach Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-03-23 Tayyaba Shabbir, Ishrat Fatima, Muhammad Mushtaq
Carreau fluid flow over a linearly curved stretching surface has significant applications in manufacturing industries. This study focuses on the impact of various parameters on the velocity, temperature, pressure skin friction, and heat transfer coefficient of a 2D Carreau flow. Both shear thinning (pseudoplastic) and shear thickening (dilatant) behaviors are considered. The parameters include suction
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Comparison influence of bilateral fluid pressure on fluid-solid coupling model of hydraulic torque converter structure Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-03-18 Kaifeng Wang, Maohan Xue, Xiaohu Geng, Shaohua Sun, Weiwei Zhao, Xiangyang Xu
The main purpose of this paper is to explore the importance of external flow field circulation of hydraulic torque converter assembly in analysis. Compared with simply considering the internal flow field characteristics, it has influence on the internal flow field analysis, external characteristics and structural stress of hydraulic torque converter assembly. This paper models the flow path of the
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Triple-diffusive free convection enhancement at the stagnation point on moving sheet under the influence of hall effect and mass flux Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-03-14 Ammara Islam, Zafar Mahmood, Umar Khan, Taseer Muhammad, Ahmed M Hassan
This study seeks to examine the impact of convective heat transfer, buoyancy ratios, hall current effect, nonlinear thermal radiation, Schmidt number, Prandtl number and mass flux condition on the temperature profiles, velocity profiles and concentration profiles. The research explores into mass and heat transfer characteristics of a stagnation point flow of a free convective triple diffusion with
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Asymmetric integral barrier Lyapunov function-based three-dimensional integrated guidance and control design with field-of-view constraint and input saturation Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-03-14 Dan Feng, Mingshan Hou, Wencong Wang, Dongyue Wang
This paper proposes an adaptive integrated guidance control (IGC) scheme for the flight vehicle intercepting the maneuvering target with asymmetric field-of-view angle constraint, input magnitude and rate saturation, and system uncertainties. A novel nonlinear three-dimensional IGC model is established in the body line-of-sight (LOS) coordinate system by employing the dual-integral control law. Based
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Intelligent optimization of non-rigidly supported stationary shoulder friction stir welding parameters Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-03-14 Taotao Jin, Pei Miao, Xiuhui Cui, Jian Wang
During the online welding of railway aluminum alloy trucks using fixed shoulder stirring friction welding technology, defects such as flying edges, cracks, and tunnels may occasionally occur due to poor coordination of the welding process parameters. This inconsistency can compromise the success rate of the welding. To enhance the quality and efficiency of the welding repairs, an optimization of the
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Research on automatic driving strategy optimization method of high-speed train based on artificial fish swarm algorithm Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-03-11 Shuai Bai, Yaqiong Qiao, Zhiguo Liang, Qingmeng Liu, Yiming Liu
The existing automatic driving technology of high-speed railway trains has been able to complete the automatic driving of trains in normal scenes, and it has begun to develop in the direction of improving operational efficiency and optimizing driving strategies. Based on the current automatic driving technology, this paper proposes an optimization method of automatic driving strategy for high-speed
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Cognitive evaluation of HUD interface layout for intelligent automotive based on Bayesian BWM and Gray-TOPSIS Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-03-09 Xuzhuang Zhang, Weixing Wang, LianDan Ma, Ziao Wang, Ningfeng Hu
To reduce drivers’ cognitive load during the driving process, The present study concentrates on the cognitive evaluation and analysis of the Head-Up Display (HUD) interface layout, aiming to enhance human cognitive efficiency. Initially, a combination of eye-tracking technology and cognitive load theory is used to investigate users’ attention allocation and changes in eye movement indicators, followed
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Optimization of the gas flow system in a selective laser melting chamber using numerical methods Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-03-09 Zirong Zhou, Yongxing Li, Xiaoxuan Chen, Xin Shang, Kunzheng Gou, Lijuan Pang
A well-designed flow field is a key factor to improve the surface quality of products by removing spatter, which is often generated during the selective laser melting (SLM) process. In the present study, three typical schemes are developed for the gas flow system of large-scale SLM equipment. In this regard, the flow deviation and velocity increase indices are implemented to characterize the flow uniformity
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Optimization study of low lateral force in eccentric ball-piston pumps Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-03-09 JiaHao Wu, LiFeng Ma, GaoCheng An, ZhenYu Xing
Eccentric ball piston pump is a high power density hydraulic component. In this paper, a low lateral force design method for an eccentric ball-piston pump is proposed to reduce the lateral force between the ball and the cylinder by slightly inclination of the cylinder, and a mathematical model of the method is established. An experimental platform of eccentric ball-piston pump for evaluating the performance
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Research on digital assembly method of large-caliber optomechanical systems Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-03-07 WenTao Yu, YanYan Chang, JinBo Li, YuXin Gong
Developing optomechanical systems with large-aperture output beams is increasingly important for deep space exploration, homeland defense, and modern warfare. However, the assembly process for such systems is becoming more challenging due to their complexity and size. Considering that traditional computer-aided assembly methods for optomechanical systems primarily prioritize debugging and testing,
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Crashworthiness design of novel CFRP functionally-graded conical square structures with variable circumscribed diameters Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-03-04 Feng Xiong, Jiaxin Wen, Dengfeng Wang, Liangjin Gui, Yanjun Jiang, Hang Wu
Carbon fiber reinforced plastic (CFRP) thin-walled structures have been widely acknowledged as superior energy absorbers due to comprehensive advantages on crashworthiness and light weight. However, few studies have been reported concerning CFRP thin-walled structures with nonlinearly variable sectional dimensions along the longitudinal direction. Hence, in the present study, a novel CFRP functionally-graded
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Influence and improvement of stamping process parameters on V-shaped clamp forming quality Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-03-01 Yingzhou Hu, Yayu Qiu, Mei Mei, Shichen Chen, Yan Zhao
Aiming at the problems that a V-shaped clamp is easy to crack, wrinkle, and springback in the stamping process, a method to improve forming quality by setting the best stamping process parameters is put forward in this paper. The stamping process of the V-shaped clamp was simulated by using the software of ABAQUS, which showed that the stamping process parameters, such as friction coefficient, stamping
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Influence of energy density on the microstructure and property regulation of additive manufactured pure nickel Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-02-29 Cong Li, Quanquan Zhang, Yanjie Ren, Wei Chen, Wei Li, Jian Chen, Libo Zhou
In this work, laser powder bed fusion (LPBF) technology was used to fabricate pure nickel components, and the densification behavior and microstructure of pure nickel with different energy densities were investigated. The results indicate that for LPBF-fabricated pure nickel components, the relative density reaches a peak of 98.76% at an energy density of 101 J/mm3. With the increase of energy density
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Research on identification of key processes in machining process based on PageRank algorithm Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-02-29 Dongyue Qu, Chao Li, Chaoyun Gu, Yuzhi Yao, Yong Zhan
Aiming at the difficulty of quantitatively evaluating the critical processes in the manufacturing process of complex mechanical products, a critical process identification method based on the PageRank algorithm is proposed with the goal of identifying key processes in the machining process. Based on the complex network theory, the error transfer network model of the machining process is established
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Effect of laser shock peening on the retention ability of surface roughness in forged Cr5 steel Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-02-29 Xuexing Wu, Yuchao Chen, He Yang, Xiangli Cheng, Bo Liu, Tao Liu, Xihuang Zhang, Lei Ren, Huan Tu, Yanpeng Wei
The roughness retention ability of the work roll surface during the cold rolling process is of great significance, especially in the production of the high-quality rolling section. Laser shock peening (LSP) is an advanced and effective surface treatment technique to improve the fatigue life, wear resistance, and other mechanical characteristics of metal components. Current studies commonly examined
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Transient conjugate free convection within flexible enclosure having discrete heat source Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-02-28 Abeer Alhashash, Habibis Saleh
Transient conjugate free convection in flexible enclosure is examined numerically. Isoflux heat sources are mounted in a left wall of finite thermal conductivity while a right wall is assumed to be hyper-flexible. The finite element method (FEM) is adopted to solve the governing partial differential equations, an arbitrary Lagrangian–Eulerian (ALE) approach inherent in the unstructured mesh. The governing
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Radial clearance influence on strain and stress distribution of the polygonal shape deep-drawing operation Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-02-28 KH Mukhirmesh, HK Dalfi, Hiydar KK Al-Abedy
In the existing research, polygonal -shaped dies were manufactured based on the dimensions of the design. These dies were then assembled on the deep-drawing device to create polygonal cups (specifically heptagonal cups) for conducting experimental work tests. The process was achieved via a deep-drawing operation to create heptagonal cups with dimensions (diameter D = 40mm and height L = 31.5 mm). For
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A method for fast reconstruction of closed section workpiece surface using point clouds Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-02-26 Pei-Yao Li, De-Ning Song, Jing-Hua Li, Lei Zhou, Jian-Wei Ma
Parameterized reconstruction of workpiece surfaces is a critical step for advanced manufacturing applications, such as the solving of machining parameters, and the expression of workpiece in situ measurement. Generally, the point clouds model is easy to obtain and can be seen as the source model of the workpiece, and the B-spline surface is always taken as the ideal target parameterized model. Existing
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Finite element solution of crack-tip fields for an elastic porous solid with density-dependent material moduli and preferential stiffness Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-02-26 Hyun C. Yoon, S. M. Mallikarjunaiah, Dambaru Bhatta
In this paper, the finite element solutions of crack-tip fields for an elastic porous solid with density-dependent material moduli are presented. Unlike the classical linearized case in which material parameters are globally constant under a small strain regime, the stiffness of the model presented in this paper can depend upon the density with a modeling parameter. The proposed constitutive relationship
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Online optimal tuning of fuzzy PID controller using grey wolf optimizer for quarter car semi-active suspension system Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-02-23 Yunyun Liu, Azizan As’arry, Hesham Ahmed, Abdul Aziz Hairuddin, Mohd Khair Hassan, Mohd Zakimi Zakaria, Shuai Yang
In order to reduce vibration and increase ride comfort, this article utilizes a system of quarter-car suspension integrated with a Fuzzy PID controller. To build and improve the Fuzzy PID controller for the semi-active suspension system used in quarter cars, using a novel meta-heuristic technique known as Grey Wolf Optimizer (GWO). Here the magnetorheological damper (MR) fluid with the Fuzzy PID controller
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Flexural behavior of two-layer reinforced concrete slab with hollow cores Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-02-16 Ahmed S. Eisa, Louay A. Aboul-Nour, Asmaa El-Ghamry, Martina Zeleňáková, Dušan Katunský
Flexural behavior of a concrete slab system with an optimal weight-to-strength ratio comprising layered and hollow-core slab structures was investigated using two-layered slabs with hollow cores (LS/HCS). Six slabs with dimensions of 180, 450, and 1600 mm were tested experimentally and numerically using ANSYS software. Each layered slab comprises a 90-mm-thick lightweight concrete bottom layer and
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Theoretical analysis of vibration characteristics of high-speed cylindrical roller bearing with groove elastic supports Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-02-14 Xue Sun, Yanhong Jiang, Shiliang Liu, Jun Xu, Wenhu Zhang
As a necessary support system of high-speed rotor system, the roller bearing with elastic support’s vibration characteristics directly affect the stability and safety of rotor system. At this point, the theoretical analysis of bearing performance under the assumption of rigid ring is obviously no longer applicable. In this paper, considering the elastic deformation of both cylindrical roller bearing
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A study on the actual heat leak of a cryogenic vessel during storage Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-02-14 Zhengqing Li, Xiaojun Wang, Shengsheng Yang, Xianhu Han, Yuhong Cai
In the traditional method, as the loss product and gas are considered to be saturated, the heat leak of a cryogenic vessel is the latent heat of loss product. However, the temperature of loss product and gas exceeds the saturated temperature as measured in tests. Therefore, a portion of the heat leak is absorbed by the loss product when it diffuses into the gas phase of a cryogenic vessel in the storage
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Computer numerical control machine tool wear monitoring through a data-driven approach Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-02-14 F Gougam, A Afia, MA Aitchikh, W Touzout, C Rahmoune, D Benazzouz
The susceptibility of tools in Computer Numerical Control (CNC) machines makes them the most vulnerable elements in milling processes. The final product quality and the operations safety are directly influenced by the wear condition. To address this issue, the present paper introduces a hybrid approach incorporating feature extraction and optimized machine learning algorithms for tool wear prediction
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Experimental research on effects of influence factors on the axial cutter vibration, cutting forces and the sugarcane cutting quality under complicated excitations Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-02-13 Hanning Mo, Shaochun Ma, Zhimin Huang, Shangping Li, Chen Qiu
The sugarcane field excitation, the engine excitation and reaction forces acting on cutters constitute complicated excitations of sugarcane harvesters. Axial cutter vibration displacement measuring and sugarcane cutting experiments were done on a self-developed sugarcane harvester experiment platform (SHEP) with complicated excitations simulated through a simulated sugarcane field exciter and an actuating
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Improved analytical model for calculating mesh stiffness and transmission error of helical gears considering root curve: Theoretical analysis and experiments Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-02-08 Ziqian Liu, Yanjun Jiang, Ruitian Luo, Yangda Wu, Jiaopeng Huang, Nan Feng, Kui Li
A modified algorithm is proposed in this study to correct time-varying mesh stiffness (TVMS) and transmission error (TE) in helical gears considering tooth root transition curve. The parametric model of helical gear is established by using the meshing principle of helical gear and hob in order to obtain the accurate tooth root transition curve. Moreover, a TE test rig is set up to compare the theoretical
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A novel reliability analysis methodology based on IPSO-MCopula model for gears with multiple failure modes Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-02-08 Xia ErDong, Zhou FuPing, Wang Kun-Chieh, Wang ChunRong, Gao Hao
In order to accurately and quickly predict the failure probability of gears with multiple failure modes, a novel reliability analysis methodology based on the mixed Copula (MCopula) function model is proposed to deal with the complex correlation among different failure functions. Firstly, we construct a novel MCopula model based on three famous Copula functions: Gumbel Copula, Clayton Copula, and Frank
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Research on noise reduction of drive axle hypoid gear based on tooth surface mismatch modification Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-02-05 Shaowu Nie, Jinyu Chen, Shaohang Liu
In order to reduce the transmission noise of drive axle hypoid gear, a method of tooth surface mismatch modification was proposed. Firstly, on the basis of establishing the grinding mathematical model of hypoid gear with cutter tilt, the theoretical tooth surface equation was derived, and the numerical tooth surface was calculated by dividing the grid points on tooth surface. Secondly, the pinion tooth
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A combined CFD-based simulation and experimental study of particle dispersion in a high-concentration airtight space under unorganized airflow Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-02-05 Xiaonan Li, Tianpeng Li, Tong Xu, Ran Zhao, Xinbao Gao, Zhaolong Xuan
It is significant to obtain the particle distribution data for workpiece processing and industrial protection strategies. To simulate the particle dispersion in a high-concentration airtight space under unorganized airflow, a CFD-based simulation and experimental were utilized in this study. The proposed method works in three steps. The first step is to use Stokes-MRF-Fan-CFD model to simplify the
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Prediction of surface roughness and optimization of process parameters for efficient cutting of aluminum alloy Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-01-31 Zhou Yuanzhi, Zhang Guozheng
At present, there are obvious deficiencies in the research on the high-speed machining mechanism of aluminum alloy materials, especially how the high-speed cutting parameters of the new 7 series aluminum alloy materials affect the machining quality of the workpiece, and how to optimize the high-efficiency cutting process parameters under the premise of ensuring the machining quality. This paper summarizes
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Dynamic load distribution property of transmission system during rice harvesting process Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-01-31 Guoqiang Wang, Yaoming Li, Rui Wang, Li Wang, Xingqin You, Bibo Huang
The average time between failures of Chinese combine harvester was far below the advanced combine harvester in Europe and America. A load test system was designed and built on the transmission structure of combine harvester. The dynamic load of the transmission structure was tested on rice harvesting in the field and used to compare with calculated values of maximum load capacity. The damage mechanism
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A multi-objective collaborative optimization method for excavator working devices based on knowledge engineering Adv. Mech. Eng. (IF 2.1) Pub Date : 2024-01-31 Zhe Lu, Shuwen Lin, Jianxiong Chen, Tianqi Gu, Yu Xie, Zihao Zhao
To enhance the excavator performance considering the digging force and boom lift force under typical working conditions, this paper aims to solve the complex multiobjective optimization of the excavator by proposing a new knowledge-based method. The digging force at multiple key points is utilized to characterize the excavator’s performance during the working process. Then, a new optimization model