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Tensile failure of open-hole composite laminates with yarn gaps: Experimental and numerical study Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-04-15 Hui Li, Jianguo Liang, Xiaodong Zhao, Zhi Li, Jun Feng, Qi Wu, Chunjiang Zhao, Zhangxin Guo
The tensile mechanical behavior and failure mechanism of multidirectional carbon-fiber-fabric-reinforced open-hole composite laminates were investigated in this study. Using digital image correlation (DIC) technology, test specimens were subjected to quasi-static tensile tests to determine their macroscale mechanical properties. An analytical framework was developed to predict the tensile properties
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Theoretical and experimental study on mixed-mode I + II fracture characteristics of thermally treated granite under liquid nitrogen cooling Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-04-13 Yilei Yuan, Chaolin Wang, Yu Zhao, Kun Zheng, Jing Bi
Liquid nitrogen fracturing technology is widely used in the exploitation of hot dry rock (HDR) geothermal resources. It is necessary to understand the fracture characteristics of hot dry rocks under liquid nitrogen cooling. In this study, the mixed-mode I + II fracture characteristics of the thermally treated granite under liquid nitrogen cooling were investigated. The results indicate that as the
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Local ratcheting and stress relaxation at notch root of CP-Ti specimen under cyclic loading: Experiment and simulation Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-04-13 Libin Feng, Qiao Dai, Lulu Hu, Cheng Guo, Yifan Li
Damage and crack always origin from notch, and it is necessary to understand the local ratcheting and stress relaxation at notch root for commercially pure titanium (CP-Ti). Symmetric strain-controlled cyclic test for smooth CP-Ti specimen is conducted to determine the cyclic constitutive relationship based on the combined hardening model. Asymmetric force-controlled cyclic test combined with Digital
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Analysis of compressive failure mechanism of concrete and grouting cubes by Peridynamics Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-04-10 Jinhai Zhao, Rui Sun, Dewei He, Qipeng Ma, Dan Huang
The structural failure forms and mechanisms of plain concrete, grout, and different aggregate concrete under the action of pressure have been puzzling the engineering and academic circles. To provide more favorable analytical means and theoretical support for structural damage and failure, this paper first adopts the experiments to analysis the compressive failure trend of cubic specimens of concrete
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Effects and recommendations of crack tip modelling on compliance solutions Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-04-10 L.G.F. Andrade, M. Mattar Neto, G.H.B. Donato
Elastic unloading compliance is a common technique to determine instantaneous crack size in fracture mechanics properties such as resistance curves () and fatigue crack growth. This technique uses a polynomial, developed using finite elements models, to correlate compliance with crack depth. In these models, crack tip is usually modeled with a blunt mesh (with a crack tip radius ) or a sharp mesh (with
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The effect of loading rate on mixed mode I/II fracture behavior of adhesively bonded joints: Experimental and numerical approach Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-04-09 Shabnam Ebrahimi, Bashir Behjat, Mohsen Kouhi
In this study, the use of a modified Arcan fixture to investigate the fracture behavior of adhesively bonded Al/Al joints has been discussed under rate-dependent loading in various loading conditions (mode I, mode II, and mixed mode (I/II)). It was observed that the testing speed has a significant effect on the fracture properties of the joints, especially in pure mode, II. The results indicated that
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Modeling the rock frost cracking processes using an improved ice – Stress – Damage coupling method Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-04-09 Shuyang Yu, Xuhua Ren, Jixun Zhang
Simulations of freezing-thawing cycles induced crack propagation in rock media is one of the most popular but hard issues to be solved in rock mechanics, the core of which is the treatment of water–ice phase change. In our work, the heat conduction equations are programmed into SPH, which can reach the goal of modelling the temperature – stress coupling problems under the SPH framework; A fracture
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Measuring the tensile properties of Ti6Al4V fabricated by laser powder bed fusion: Influence of specimen dimensions Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-04-09 Nicolas Wawrzyniak, Priti Wanjara, Mathieu Brochu, Myriam Brochu
This study presents the mechanical characterization of vertical Ti6Al4V tensile specimens produced by laser powder bed fusion (LPBF) processing and then heat-treated according to AMS2801 standard. The surfaces were kept in the as-built condition for the evaluations. Three rectangular specimen geometries were considered, with a reduced section of 6 × 6 × 25, 3 × 3 × 12.5, and 1 × 1.5 × 7 mm3 respectively
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A thermodynamically consistent phase field model for brittle fracture in graded coatings under thermo-mechanical loading Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-04-09 R. Piska, S. El-Borgi, M. Nafees, A. Rajagopal, J.N. Reddy
This paper presents a thermodynamically consistent phase field formulation designed for investigating quasi-static brittle fracture under thermo-mechanical loading conditions in functionally graded materials. The governing equations for linear momentum and crack evolution are derived by minimizing the free energy functional, which includes elastic strain energy and surface energy, with respect to displacement
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Simulation of fracture behavior in seawater and sea-sand mixed recycled coarse aggregate concrete under three-point bending Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-04-08 Faisal Mukhtar
This paper presents a comprehensive fracture analysis of seawater-mixed concrete containing seasand and recycled concrete coarse aggregate based on the eXtended finite element method. Capable of simulating fracture problems without the need for a conforming mesh, the model was validated using a set of literature experimental results for specimens containing different compositions of the sustainable
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Experimental study on the dynamic mechanical and progressive fracture behavior of multi-jointed rock mass under repetitive impact loading Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-04-06 Kangqi Liu, Hongyan Liu, Yuezhi Zhou, Guangyi Liang, Lei Xue
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The multi-dimensional joint response of the electric potential time–frequency-field in the fracture process of flawed coal under dynamic load Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-04-06 Zesheng Zang, Zhonghui Li, Zhoujie Gu, Yue Niu, Shan Yin, Xiangguo Kong, Xin Zhang
The fracture failure of flawed coal has always been a problem in underground engineering. Therefore, it is necessary to monitor crack propagation and damage evolution during coal fracture. In this study, the split Hopkinson pressure bar (SHPB) and digital image correlation (DIC) were combined to analyze the impact failure electric potential (EP) of flawed coal samples. The multi-dimensional joint response
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Static and fatigue behavior of 3D printed smooth and notched PLA and short carbon fibers reinforced PLA Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-04-05 Estera Vălean, Pietro Foti, Filippo Berto, Liviu Marșavina
Additive manufacturing (AM) offers various advantages, such as geometrical design freedom and highly tailored components. Among the AM technologies, fused deposition modeling (FDM) is one of the most commonly used methods for polymers. In this work, we analyze the fracture behavior of both smooth and notched specimens made from two different materials: polylactic acid (PLA) and short carbon fiber (CF)
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Compressive and flexural mechanical responses of components obtained through mSLA vat photopolymerization technology Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-04-05 Aleksa Milovanović, Matteo Montanari, Zorana Golubović, Mihai P. Mărghitaş, Andrea Spagnoli, Roberto Brighenti, Aleksandar Sedmak
In recent years, Additive Manufacturing (AM) has become an increasingly popular method in industrial applications for fabricating components with complex geometries, offering several benefits over traditional (subtractive) manufacturing methods. Among all available AM technologies, “vat photopolymerization” is still a reliable approach for manufacturing high-resolution components at relatively small
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Numerical investigation on the fracture and mechanical behaviors of marble containing two parallel fissures under triaxial compression conditions using FDEM Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-04-04 Yapeng Li, Qiang Zhang, Binsong Jiang
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Fracture response of thermal-treated granite under mode III loading: Through the edge-notched diametrically compressed disk specimen Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-04-03 Luqing Zhang, Haijian Su, Liyuan Yu, Zhiwei Li, Rui Cai, Guofei Chen
The deep rock mass is subject to a high degree of coupling of geothermal and complex loading, and complex mechanical and hydraulic loading induces out-of-plane progression of primary fractures, culminating in the formation of pure mode III fractures. To study the impact of high temperatures on the fracture behavior of pure mode III, the edge-notched diametrically compressed (ENDC) granite discs were
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Experimental and numerical failure mechanism evaluation of anisotropic rocks using extended finite element method Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-04-03 Vahid Abbasi, Morteza Ahmadi, Ehsan Mohtarami, Javad Karimi, Fatemeh Saberi
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ASTM interlaboratory study on tensile testing of AM deposited and wrought steel using miniature specimens Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-04-03 J. Dzugan, E. Lucon, M. Koukolikova, Y. Li, S. Rzepa, M.S. Yasin, S. Shao, N. Shamsaei, M. Seifi, M. Lodeiro, F. Lefebvre, U. Mayer, J. Olbricht, M. Houska, V. Mentl, Z. You
An interlaboratory study, involving eigth international laboratories and coordinated by COMTES FHT (Czech Republic), was conducted to validate tensile measurements obtained using miniature specimens on additively manufactured (AM) components and artifacts. In addition to AM 316L stainless steel (316L SS), a wrought high-strength steel (34CrNiMo6V, equivalent to AISI 4340) was also used. Based on the
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Mode-II stress intensity factors for special-shaped cylindrical shells in torsion Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-04-03 Jin Li, Pei Xie, Hao Yuan
Special-shaped cylindrical shells in torsion are encountered in engineering applications, which will induce the Mode-II singular stress fields next to circumferential crack tips. The Mode-II stress intensity factor (SIF) represents the strength of these singular stress fields and is an important fracture parameter. The crack problems for the cylindrical shells are typical finite boundary value issues
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Dynamic impact experimental and global cohesive element method to shale fracture characterization Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-04-03 Penglong Li, Ning Luo, Yabo Chai, Weifu Sun, Haohao Zhang, Cheng Zhai
The fracture behavior and various of mechanical mechanisms of shale are greatly influenced by the bedding surface. To study the effects of bedding angles on the crack propagation patterns and dynamic fracture properties, the shale notched semi-circular bend (NSCB) specimens were studied by the modified split Hopkinson pressure bar (SHPB) device, three-dimensional digital image correlation (3D-DIC)
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Reliability analysis of fatigue crack growth in shallow shell structures using the Dual Boundary Element Method Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-04-01 Mengke Zhuang, Llewellyn Morse, Zahra Sharif Khodaei, M.H. Aliabadi
This work presents a novel methodology for fatigue life reliability analysis using a newly developed Dual Boundary Element Method-based Implicit Differentiation Method (DBEM-IDM) in shallow shell structures. The proposed DBEM formulations evaluate stress intensity factors and fatigue life sensitivities in shallow shells considering geometrical variables and curvature. The IDM formulations, obtained
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Effect of high-temperature and strain rate on the mechanical and cracking behaviors of flawed sandstone under dynamic impact loading Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-31 Tao Zhou, Yangyang Zhang, Yonglin Fan, Jiarong Chen, Changtai Zhou, Heping Xie, Jianbo Zhu
A deep understanding of how flawed rock cracks under high temperatures and dynamic impacts is crucial for safe deep rock engineering design and operation. Dynamic impact tests were conducted on sandstones with various flaw inclinations using a Split Hopkinson Press bar (SHPB) system at room temperature and after high-temperature treatment at 600 °C. The results show that the dynamic peak stress and
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Determination of the ductile-to-brittle transition temperature of NIOMOL 490 K steel welded joints Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-28 Ana Maksimović, Ljubica Milović, Bojana Zečević, Vujadin Aleksić, Dragoljub Bekrić
This paper is dedicated to the ductile–brittle transition behaviour of the microalloyed structural steel NIOMOL 490 K. This steel grade is used for welded pressure vessels subjected to dynamic loads and operating at sub-zero temperatures. Therefore, it must have an acceptable toughness. Due to its importance for the safety assessment of pressure vessels, a characterization of this steel was carried
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Assessing notch fatigue performance of aluminium alloy AA2024-T4 after uni-axial and equi-biaxial tensile pre-straining: Experimental observations and predictive models Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-28 Amit Vikram Rex, Surajit Kumar Paul, Akhilendra Singh
This study delves into the effect of different tensile pre-straining (uni-axial and equi-biaxial pre-strain) modes on the notch fatigue performance of AA2024-T4. By conducting a series of fully reversed stress-controlled high cycle fatigue (HCF) experiments, pre-strained samples demonstrated notable improvements in HCF resistance, surpassing those without pre-strain. A stress-based fatigue life prediction
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Multi-GPU parallel acceleration scheme for meshfree peridynamic simulations Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-28 Xiaoming Wang, Shirui Li, Weijia Dong, Boyang An, Hong Huang, Qing He, Ping Wang, Guanren Lv
Peridynamics (PD) using integral equations has unique advantages in modeling structural damage evolution, but the expensive computational and memory costs associated with the nonlocal nature of PD severely limit its engineering applications. This study presents a CUDA-based multi-GPU parallel scheme for meshfree PD simulation, which is compatible with dual-horizon PD supporting multiscale spatial discretization
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Notch effect in tension-tension fatigue of short glass fibre reinforced polyphenylene sulfide composites Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-26 Filippo Coppola, Mauro Ricotta, Nicolò Bonato, Simone Carmignato, Giovanni Meneghetti
An experimental investigation of the fatigue behaviour of plain and notched specimens made of 40 % wt. short glass fibre-reinforced PolyPhenylene sulfide is presented. To this end, plain and V-notched specimens (with notch root radius ranging from 0.2 mm to 10 mm) were produced by injection moulding, and the final geometries were obtained by means of two different technological processes (i.e., directly
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Investigation of stress-wave-induced crack penetration behavior at the rock-Ultra-High-Performance Concrete (UHPC) interface Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-26 Yongchao Ma, Jianxing Chen, Hao Qiu, Jinping Zhuang, Lei Zhou, Meng Wang
The propagation behaviour of initial cracks in concrete penetrating the rock-concrete interface is still unclear. This study investigated the behaviour of stress wave-induced crack penetration through the Ultra-High-Performance Concrete (UHPC)-granite interface and crack propagation speed (CPS) using a combination of the crack propagation gauge (CPG) system and a split Hopkinson pressure bar. The influence
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Analysis of fracture toughness deterioration and instability model of dangerous rock masses under freeze–thaw cycles Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-26 Zhengding Deng, Xingqiu Zhang, Zhaolin Wang, Jinwei Min, Junhao Wei
The instability of dangerous rock masses is primarily caused by the stress intensity factor at the primary structural plane exceeding the fracture toughness of the rock bridge section, which results in the propagation of fractures. Additionally, in cold regions, the fracture toughness of these rock masses gradually decreases due to freeze–thaw cycles. Initially, considering the deterioration of type
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Pre-notch and pre-crack size effects on T-peel fracture behaviors of SAC305 solder joints Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-26 Yanwei Dai, Jianfeng Wang, Jiarui Yu, Mengen Liu, Fei Qin
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Fracture toughness testing of metallic materials based on scratch tests Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-26 Jianwei Zhang, Chenchen Zhang, Yuanxin Li, Minghao Zhao, Bingbing Wang
As a crucial parameter for determining a material's resistance to crack propagation, the convenient characterization of fracture toughness has attracted much attention. The scratch test is an alternate method for determining fracture toughness because it does not require notches or pre-existing cracks and only requires a minimal sample volume. In this study, the product of strength and elongation of
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Mode I/II cracking behavior of additively manufactured interpenetrating phase composites (IPC), an experimental and theoretical study Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-24 Hamid Reza Karimi, Ehsan Khedri, Amir Mousavi, Amirhesam Taherifar, Zahrae Abdoli, Razie Mohamadi
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Investigation on the size effect of compacted clay mode I fracture based on NDB specimens Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-24 Chuan Lv, Junjie Wang, Shiyuan Huang, Xiaofeng Zhang
The size effect is closely related to the cracking resistance of compacted clay, which is crucial in engineering applications, but little attention has been given to it in previous studies. This study investigated the size effect on mode I fracture behaviors of compacted clay using single-edge notched deep beam (NDB) specimens. Through the digital image correlation (DIC) method, the crack initiation
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An experimental study into the degradation of elastic, plastic and fracture properties of a pre-corroded ductile material at elevated temperatures Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-23 Shantanu Jain, Gaurav Singh
Carbon steel is one of the most commonly used engineering materials. However, the mechanical properties of steel deteriorates due to exposure to harsh environments like corrosive surroundings and high temperatures. Extensive studies have been done to understand the exclusive effect of corrosion and high temperatures on tensile and fracture properties, although their combined effect has not been addressed
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Failure behaviors and acoustic emission characteristics of flawed granite of different grain sizes: Insights from true triaxial experiments with a free face Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-23 Binglei Li, Wenhao Shi, Huajin Zhang, Yi Long
In this study, a group of experiments using true triaxial stress conditions with free face loading are performed on granite specimens with non-penetrating double flaws. The crack development and failure characteristics of these specimens are explored by integrating video of the free face and acoustic emission technology, with the combination of the four different intermediate principal stresses and
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Experimental study and theoretical analysis of ECC type I fatigue fracture after subjected to sub-high temperature Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-22 Shuling Gao, Zhaoyang Sun
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Bayesian analysis of acoustic emission data for prediction of fatigue crack growth in concrete Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-21 Radhika V., J.M. Chandra Kishen
Acoustic emission (AE) is a valuable technique for non-destructive testing, enabling real-time monitoring and measurement of fatigue crack growth in engineering structures. The present study focuses on investigating the fatigue crack growth behaviour in plain concrete specimens through Bayesian analysis of AE data collected during the testing of beam specimens under three-point bending. A log-linear
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Generalization of crack growth mechanisms under isothermal and thermomechanical fatigue by COD and ERR parameters Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-21 V. Shlyannikov, A. Sulamanidze, D. Kosov
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A novel model considering combined effects of as-built roughness and notch for multiaxial fatigue life prediction of L-PBF Ti6Al4V Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-20 Susong Yang, Weiping Hu, Zhixin Zhan, Jian Li, Di Zhang, Qingchun Meng
Additive Manufacturing (AM) has emerged as a promising manufacturing technology. However, there is still a lack of effective methods for evaluating the influence of as-built roughness, especially for notched components under complex fatigue loading. In this paper, a method based on damage mechanics for multiaxial fatigue life prediction is proposed for addressing the individual and combined effect
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Meshfree simulation of dynamic brittle and quasi-brittle fracture using a local damage model based on lattice particle method Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-20 K.C. Ng, Hailong Chen, W.C. Low
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Effect of constraint on creep fracture toughness of a Cr-Mo-V steel Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-19 Zhang Kun, Tan Jianping, Chang Shuai, Zhu Wenbo, Tu Shantung
The creep fracture toughness of materials is required for the assessment of defective components at high-temperatures. Existing evidence indicates that creep crack-tip constraint state has a great influence on the fracture behavior of materials. In this work, the effect of constraint on creep fracture toughness was explored by conducting a series of creep crack growth tests on specimens with various
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Failure characteristic of fissured rock specimens under true triaxial unloading conditions Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-19 Xu Chang, Xu Zhang, Jin Yu, Wanli Tan, Wei Li
The failure characteristics of fissured rock specimens under true triaxial unloading conditions were investigated. The effects of the intermediate principal stress () on the stress–strain responses, failure modes, specimen strength, and acoustic emission (AE) cues were evaluated. It is found that the deformation in the direction of the minimum prnicipal stress decreases as increases to a certain value
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Experimental study on dynamic fracture of UHPC-NC specimens after high temperature burning treatment Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-16 Hao Qiu, Haopeng Lai, Feiyu Liao, Yufeng Chen
For the ultra-high performance concrete (UHPC) overlaying normal concrete (NC) structures subjected to high-temperature burning, the reliable interface performance between UHPC and NC is the foundation for achieving their good co-work behavior. This paper focused on experimental and theoretical research on crack propagation at the interface of these UHPC-NC configurations under stress waves. A bi-material
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Modified Paris law for mode I fatigue fracture of concrete based on crack propagation resistance Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-16 Mengdi Jia, Zhimin Wu, Xingyue Jiang, Rena C. Yu, Xiaoxin Zhang, Yanjie Wang
To characterize mode I fatigue fracture of concrete, the Paris law has been widely applied. However, due to the quasi-brittle properties of concrete, it has been found that the empirical constants in the model are dependent on the size of the specimen and the level of the fatigue load. In addition, the crack propagation resistance under cyclic loading introduced in the existing modified Paris law is
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3D-generalized maximum tangential strain criterion for predicting mixed-mode I/II/III fracture initiation of brittle materials considering T-stress effects Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-16 Yang Ju, Yihao Zhang, Kai Wang, Hongwei Zhou
To overcome the difficulty of predicting the initiation and conditions of three-dimensional (3D) cracks, we proposed a novel 3D-generalized maximum tangential strain (3D-GMTSN) criterion for mixed-mode I/II/III loading conditions, considering the effects of -stress and Poisson’s ratio. The proposed strain-based criterion can predict the initiation direction and conditions of cracks under mixed-modes
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New approach for determining the fracture parameters by electromagnetic-mechanical coupling Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-16 Harzallah Salaheddine, Benhadda Nabil
This paper introduces a novel method for assessing fracture mechanics parameters such as Stress Intensity Factor (SIF), Energy Release Rate (J) and Crack Tip Opening Displacement (CTOD). An electromagnetic–mechanical coupling (EMC) approach is employed to evaluate and to measure these fracture parameters by monitoring the variation of impedance using eddy currents. This approach relies on the eddy
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Non local multiaxial fatigue modeling of defects : A unified approach to interpret size and shape effects Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-16 Pierre Merot, Franck Morel, Camille Robert, Etienne Pessard, Linamaria Gallegos Mayorga, Paul Buttin
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Influence of debonding and substrate plasticity on thin film multicracking Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-16 Aurélien Doitrand, Sarah Rubeck, Sylvain Meille, Jérôme Chevalier, Philippe Steyer, Sébastien Gallois-Garreignot
Multicracking of a thin brittle layer deposited on a substrate with an intermetallic layer is studied using finite fracture mechanics. Nonlinear implementation of the coupled criterion is used to predict the initiation and successive subdivisions of a periodic network of cracks considering intermetallic layer plasticity and interface debonding. Plasticity has a moderate influence on the cracking kinetics
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Stress redistribution and stress triaxiality effect on the fatigue life of notched Ni-based single crystal superalloy at 760℃ Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-13 Jundong Wang, Tianyu Liu, Leike Yang, Zhixun Wen, Zhufeng Yue, Qianzhu Mao
The multiaxial stress state caused by geometric discontinuities will result in significant differences in the fatigue performance compared to the uniaxial stress state. It is crucial importance to research the notch fatigue behaviors of nickel-based single crystal (Ni-SX) superalloys at high temperature. This study investigated the impact of stress redistribution and stress triaxiality on the fatigue
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Experimental study on mechanical properties and evolution of fracture failure of granite considering initial temperature damage and prefabricated fissure length Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-13 Chunxiao Li, Dejian Li, Bo Hu, Ruixue Du, Xiaolin Liu
With the increasing mining depth of deep mineral resources, the influence of high temperature on the fracture failure of surrounding rock with fissures becomes increasingly serious. To investigate the fracture mechanical properties and the evolutionary characteristics of fracture process of fissured rock experiencing initial temperature damage, the three-point bending experiment was conducted on the
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Prediction of fracture failure and fracture parameters for dam gallery concrete specimens of arbitrary size and age via boundary effect model and fracture extreme theory Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-12 Xiaofeng Gao, Mingli Ji, Qingbin Li, Mengxia Zhou, Cheng Yang, Zhihong Liu
Cracking-associated problems may occur in the construction and operation periods of dam galleries, necessitating attention to the fracture characteristics of gallery concrete. The fracture parameters of concrete exhibit size effects and also change with age. A correct evaluation of the cracking risk or crack stability of gallery structures at any given time requires a comprehensive understanding of
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Effect of cork powder concentration and service temperature on strength characteristics and failure modes of tubular adhesively bonded joints Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-12 Shamsheer Haider, Hassan Ejaz, A. Mubashar, Manzar Masud
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Experimental study on crack propagation characteristics of unconventional reservoir rocks Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-12 Zaiyong Wang, Haojie Lian, Weiguo Liang, Pengfei Wu, Wenda Li, Yongjun Yu, Dijie Zhu
This study investigates the fracture behaviour of three types of specimens (shale, sandstone, and coal), which are commonly found in unconventional reservoirs, based on mode Ⅰ single-edge notch beam (SENB) test. We employ the Digital Image Correlation technique to track the strain evolution and crack propagation paths of the three types of materials and compare their fracture characteristics. The experimental
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Discontinuous fracture behaviors and constitutive model of sandstone specimens containing non-parallel prefabricated fissures under uniaxial compression Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-11 Menghao Zheng, Yunpei Liang, Manfred Staat, Quangui Li, Jianbo Li
The deformation and damage laws of non-homogeneous irregular structural planes in rocks are the basis for studying the stability of rock engineering. To investigate the damage characteristics of rock containing non-parallel fissures, uniaxial compression tests and numerical simulations were conducted on sandstone specimens containing three non-parallel fissures inclined at 0°, 45° and 90° in this study
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Evaluation of effect of spheroidization heat treatment on mechanical properties via small punch test Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-11 Xun Wang, Yan Du, Lianyong Xu, Lei Zhao, Yongdian Han
Due to the long time high temperature thermal action, pearlite heat-resistant steel 15CrMo is prone to pearlite spheroidization, which reduces its strength and makes it difficult to meet the actual service requirements. Therefore, quantifying the effect of pearlite spheroidization is an important factor in evaluating the high temperature performance of 15CrMo steel. In this study, the mechanical properties
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Evaluation of fracture energy and durability properties of pavement concrete incorporating blends of durable and non-durable limestone Aggregates: RSM modelling and optimization Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-09 Ahmad Mansourian, Shahin Shabani, Kianoush Siamardi
Cement concrete pavements are the ground structures constructed with quasi-brittle materials which fail under fracture modes caused by traffic loading and environmental conditions. Practically, incorporating local aggregate resources is inevitable for the sustainable use of materials in construction. In this research study, a total of 15 concrete mixes with similar gradations, slump and air-content
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Support vector regression-assisted finite element method for mode I-II fatigue crack growth path prediction Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-08 Jianchun Yao, Jiawei Xiang
Most of failures in mechanical components in engineering are caused by fatigue crack growth (FCG), especially mode I-II cracks. Accurately and fast predict of crack growth paths of mode I-II in structures is important in academic research and engineering applications. Finite element method (FEM) simulation of FCG can be accurately performed for engineering applications. However, the commercial FEM
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Critical slowing down characteristics of acoustic emission for fracture instability of sandstone down-slope rock bridge under cyclic wetting and drying Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-08 Li Wan, Tong Jiang, Qi Wu, Jinyu Dong, Zangnan Yu
Down-slope rock bridge in slopes and dangerous rock masses are often affected by cyclic wetting and drying, leading to severe geological disasters. In order to investigate the deterioration mechanism, deformation failure mode and instability precursor information of sandstone down-slope rock bridge under different cyclic wetting and drying, uniaxial compression tests combined with acoustic emission
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Influence of different heat treatments on fracture behavior of rolling element bearing steels Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-07 Nikhil Londhe, Scott Hyde
Rolling element bearings (REB), one of the critical components of mechanical power transmissions, operate under high contact loads concentrated over small volumes of material. The damage caused by fatigue to REBs happens in two stages: the initiation of cracks and the propagation of cracks from areas of stress concentration. To select bearing steels for different applications, it is important to have
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Step-path failure mechanism and stability analysis of water-bearing rock slopes based on particle flow simulation Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-06 Jie Chen, Jue Tong, Yichao Rui, Yi Cui, Yuanyuan Pu, Junsheng Du, Derek B. Apel
Step-path failure is a typical damage mode of rock slope featuring intermittent joints. In order to investigate the effect of water-fracture interaction on the stepped failure, laboratory experiments of rock materials and numerical simulation of slopes with intermittent joints were conducted. At the laboratory scale, the influence of water-fracture interaction on the mechanical characteristics and
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Ductile fracture prediction of additively manufactured Ti-6Al-4 V alloy based on void growth and coalescence of a unit-cell model Journal of Theoretical and Applied Mechanics (IF 5.3) Pub Date : 2024-03-05 Baisen Gao, Wei Huang, Shengnan Wang, Zhigang Liu, Xianmin Chen, Shaopu Su
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