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Quasi-static and dynamic tensile behaviour of 316L stainless steels: Rolled versus laser-powder bed fusion (LPBF) fabricated samples Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-04-16 Jian Liu, Le Dong, Cunyi Li, Jianguang Fang, Ying Chen, Jian Cui
This study assessed the quasi-static and dynamic tensile properties of additive manufactured 316L stainless steel through a series of direct tensile tests. The fabrication of the additive manufactured 316L stainless steel specimens was achieved through the laser powder bed fusion (LPBF) technique, with specimens prepared in various building orientations. For comparison, traditional rolled 316L stainless
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Experimental and computational investigation into the damage mechanisms in composite metal hybrid panels subjected to high pressure blast loading Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-04-16 Evan G. Patton, Robert J. Hart
In this work, a free piston shock tube is utilized to conduct blast experiments on unidirectional glass fiber reinforced thermoplastic composite-metal hybrid panels. Damage and deflection characteristics are obtained in real time during the blast test using fringe projection methods, and post blast damage is assessed by nondestructive evaluation methods. Finite element models are developed in LS Dyna
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Numerical and analytical study of the stiffener effects on the structural resistance of a plate cut by a wedge Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-04-16 Yichi Zhang, Jiayou Zhou, Yuchao Yuan, Wenyong Tang
Stiffened panels are widely used in ship and offshore structures and the evaluation of cutting resistance is important for structural safety assessment in ship collision and grounding accidents. This paper presented numerical and analytical analyses for cutting analysis stiffened plates. The numerical simulations were firstly validated against experimental data and the stiffener effects on the cutting
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Dynamic behaviors of unreinforced and spray polyurea retrofitted brick masonry infill walls under blast loads: Shock tube test and analyses Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-04-15 De Chen, Hao Wu, Yuehua Cheng
Unreinforced masonry infill walls (MIWs) are prone to crack, fragment, and even collapse under blast loads, threatening the safety of building structures, as well as the inside occupants and equipment. Spray polyurea (SPUA) has been proven to be an excellent retrofitted material for MIWs to improve their blast resistance. Aiming to study the dynamic behaviors of brick MIWs under far-field range blast
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Study on the protective performance of metakaolin-based foam geopolymer (MKFG) as a sacrificial cladding under internal blast mitigation Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-04-15 Wenxin Wang, Hang Zhou, Jiaxi Mao, Yajun Zhang, Suxi Wang, Shikun Chen, Zhen Wang, Yi Liu, Dongming Yan
In this study, experiment and numerical simulation are carried out for the metakaolin-based foam geopolymer (MKFG) as sacrificial cladding in protective structures. The dynamic response of the Rock-MKFG-Concrete Sandwich (RFGCS) structure was investigated by near-field tests. Through numerical simulation, the effects of blast time, sacrificial cladding density and blast equivalent on the energy absorption
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Experimental and numerical studies on AFRP-reinforced thin-walled tubes under axial impact loading Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-04-09 Abderrahim Djerrad, Feng Fan, Xudong Zhi, Qijian Wu
With the increase in global threats to infrastructure, from unforeseen events particularly in steel structures, there is a growing urgency to strengthen the impact resistance of steel elements. This research aimed to investigate the potential of using AFRP (Aramid Fiber Reinforced Polymer) to improve the energy absorption and crushing resistance of thin-walled circular hollow steel (CHS) tubes subjected
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Trajectory prediction of rigid projectile for oblique penetration into multi-layer aluminum targets Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-04-09 Xiang Xiao, Shunshan Feng, Yueguang Gao, Bo Zhang
Multi-layer targets and nonideal initial conditions significantly increase the complexity of penetration trajectory prediction. To address this issue, a general multi-layer target trajectory model was developed based on expanding spherical cavity in layered finite targets, comprising the wake separation and finite free-surface effects. The trajectory prediction model adopted the developed geometric
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Fast optimisation of honeycombs for impact protection Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-04-09 Olly Duncan
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A review and comparative analysis of normal contact force models for viscoelastic particles Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-04-05 Suhang Ding, Yiqun Hu, Bin Jian, Yuhang Zhang, Re Xia, Guoming Hu
Applying a proper contact force model is of great importance for the modelling and analysis of contact behaviors. This paper presents a comprehensive review of various normal contact force models, including both elastic and viscoelastic models, where the difference between them lies in whether the energy dissipation is considered in the contact process, and the latter is usually composed of both elastic
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Experimental hypervelocity impact of sedimentary and metamorphic rocks: Reconstruction of crater shapes and volumes Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-04-04 John G. Spray, Philip A.S. Gores, Thomas Kenkmann, Michael H. Poelchau
The shapes and volumes of crater forms have been determined using 3-D laser scan data acquired following the hypervelocity impact of rock. Forty-four shots (23 sedimentary targets and 21 metamorphic targets) at impact velocities from 2.50 to 7.85 km/s have been assessed from the Multidisciplinary Experimental and Modeling Impact Network (MEMIN). Best fits have been determined for parabolic, hyperbolic
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Nonlinear correction of elastic section in HJC constitutive model Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-04-04 Guo liang Wu, Hua Wang
The Holmquist Johnson Cook (HJC) constitutive model is widely utilized in the examination of the mechanical properties of high-strength aggregate concrete and rock materials due to its simplicity and effectiveness in simulating their strength. Nonetheless, a limitation of this model is its incapability to simulate the nonlinear relationship between stress and strain in the elastic phase (compacted
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Penetration of a jacketed tungsten Fibre/Zr-based bulk metallic glass matrix composite rod into semi-infinite targets Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-03-30 Feng Zhou, Chengxin Du, Chun Cheng, Lizhi Xu, Zhonghua Du, Guangfa Gao, Huameng Fu, Jilong Han
To investigate the influence of a tungsten fibre/Zr-based bulk metallic glass matrix composite (WF/Zr-MG) jacketed with C45 steel on penetration performance, this paper presents a ballistic experiment on a semi-Infinite RHA target impacted by a composite structure rod consisting of 80 % volume fraction of WF/Zr-MG (with a tungsten fibre diameter of 0.3 mm) and a low-density jacketed material (C45 steel)
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Dynamic responses of shear thickening fluid-filled lattice structures Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-03-29 Qifang Hu, Guoxing Lu, Kwong Ming Tse
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Investigation on impact damage and residual in-plane compression strength of FML laminates Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-03-28 Zhonggang Wang, Jiayin Mao, Ke Yuan, Kai Wei, Shaocheng Yao
Fiber metal laminates (FML) have attracted considerable attention due to their excellent attributes of light weight, high strength, ease of shaping. This work focuses on investigating the impact responses and residual in-plane compression strength of two distinct FML configurations, namely, FRP-Alloy-FRP (FAF) and Alloy-FRP-Alloy (AFA). The impact experiments have unveiled notable differences in terms
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Impact response of semicylindrical woven composite shells: The effect of stacking sequence Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-03-26 L.M. Ferreira, M. Muñoz-Reja, P.N.B. Reis
The existing literature extensively explores the influence of stacking sequences on symmetric flat laminates subjected to low-velocity impacts. However, this is not true in the case of curved laminates. Therefore, the main goal of this study is to analyse the effect of stacking sequences on the impact response of semicylindrical woven composite shells. For this purpose laminates with [0], [45], [+15
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Hopkinson bar impact force measurement for application to development of an artificial bird Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-03-26 J. Michael Pereira, Stefan A. Ritt, Kevin L. Poormon, Wydo van de Waerdt, Duane M. Revilock
A test method has been published for measuring forces from bird cadavers and artificial birds to demonstrate equivalency to support the use of artificial birds in aircraft certification testing. The test method involves a large diameter Hopkinson bar as the technique for measuring and comparing forces. The method involves the assumption that a force on one end of the bar results in a one-dimensional
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Damage evaluation of rock blasting based on multi-fractal study Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-03-24 Chenglong Xiao, Renshu Yang, Xinmin Ma, Yanbing Wang, Chenxi Ding
This study shows the failure mechanism of rock under blasting loads by CT scanning and utilizing fine sandstone as a test specimen. The results indicated that the 3D reconstruction technique can be employed to construct macroscopic fissures in the rock. The complexity of macroscopic fissures in the rock after blasting is quantitatively evaluated using the 3D box-counting dimension. In addition, a multi-fractal
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Impact response of physical analog of Martian regolith Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-03-15 Vadim Ziborov, Timofei Rostilov, Ekaterina Kronrod, Ilia Kuznetsov, Gennady Dolnikov
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Enhanced cross laminated timber (ECLT) for ballistic resistant design Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-03-14 Juliet Swinea, Kathryn Sanborn, Mark Weaver, Marco Lo Ricco, C.Adam Senalik, Lauren K. Stewart
Cross-laminated timber (CLT), an engineered wood product, has grown in popularity in the United States over the last decade due to its ease of assembly, aesthetic appeal, and potential to serve as a sustainable and renewable alternative building material. The improved robustness of CLT over light-frame timber structures has increased its potential in force-protected infrastructure that must resist
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Dynamic behaviors of sandwich panels with 3D-printed gradient auxetic cores subjected to blast load Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-03-07 Chuanqing Chen, Yulong He, Rui Xu, Cheng Gao, Xin Li, Minghui Lu
This study experimentally and numerically investigated the blast resistance of sandwich panels composed of steel face sheets and 3D-printed gradient auxetic chiral core. Five gradient strategies were utilized in the design of auxetic core, including uniform gradient, positive gradient, negative gradient, center positive gradient and center negative gradient. Varying blast loadings were applied by adjusting
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Crashworthiness in preliminary design: Mean crushing force prediction for closed-section thin-walled metallic structures Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-03-05 Shreyas Anand, René Alderliesten, Saullo G.P. Castro
To design crash structures for disruptive aircraft designs, it is required to have fast and accurate methods that can predict crashworthiness of aircraft structures early in the design phase. Axial crushing is one of the key energy absorbing mechanisms during a crash event. In this study, various analytical models proposed for calculation of mean crushing force for thin-walled tubular structures are
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Elastic-plastic response for the foam-filled sandwich circular tube under internal blast loading Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-03-04 Tianhui Zhang, Zhifang Liu, Shiqiang Li, Jianyin Lei, Zhihua Wang
The dynamic response and the blast resistance of an aluminum foam-filled sandwich circular tube under internal blast loading was investigated theoretically. The deformation of the structure is decoupled into three phases corresponding to blast loading interacting with the internal tube, foam core crushing and external tube deformation. During the process, the theoretical model includes both the circumferential
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On the strain-rate dependent compressive failure behavior of 2.5D woven composites Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-03-04 Zhenqiang Zhao, Qingquan Lv, Yinglong Cai, Chao Zhang
Understanding the mechanical failure behavior of 2.5D woven composites (2.5DWC) is challenging due to their complex fabric configurations and multi-scale structural properties. This challenge is particularly prominent in the realm of dynamic mechanical properties and damage failure mechanisms under high strain rates. Therefore, a comprehensive approach combining a series of quasi-static and dynamic
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Finite element simulation of axial crushing of flat and C-channel composite coupons using a modified mesomodel Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-03-03 A. Rajaneesh, M. Bruyneel
The present article investigates the axial crushing behavior of IM7/8552 material system. Two types of specimens are considered-(a) flat coupons with saw-tooth trigger and (b) C-channels with 45° chamfer as a trigger. All the crushing test data (load, displacement and velocity history curves) is shared in the Crashworthiness working group (CWG) consortium of the Composite material handbook (CMH17.org)
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Energy transfer efficiency and rock damage characteristics of a hydraulic impact hammer with different tool shapes Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-03-01 Yanlong Zheng, Ziqiang Su, Jianchun Li, Zhijie Wang, Yubing Xu, Xing Li, Ping Che
The energy transfer efficiency and damage characteristics are the theoretical basis for the selection and optimization of hydraulic impact hammer tools. In this paper, quarter three-dimensional models of the piston-tool-rock system are established based on the continuum and discontinuum element method. The incident and reflected stress waves and rock damage characteristics obtained from the simulation
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Effects of Hugoniot properties on jet onset conditions Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-03-01 Earth Sugandhi, Amar Agarwal, Anwesh Saha, Gaurav Joshi
Jets are the earliest ejected material from a hypervelocity impact event. Jets comprises of projectile and target's surface material and are ejected at velocities higher than escape velocity for Earth. Effects of Hugoniot properties of the projectile and target material on jet initiation are not well understood. We, therefore, developed a mathematical model that incorporated the limitations imposed
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Dynamic behavior of steel plates subjected to confined blast loading considering afterburning effect Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-02-29 Hu Zhou, Xuesen Yue, Cheng Zheng, Zihan Zhu, Ange Lu, Xiangshao Kong, Weiguo Wu
A confined explosion is often accompanied by the release of energy from the further combustion of detonation products, known as the afterburning effect. This can enhance the blast loading, potentially compromising the structure design. To determine the influence of afterburning on the blast loading and dynamic response of a structure, this study experimentally investigated the effects of explosions
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Ground deformation and blast wave propagation in dry sand subjected to buried explosion: A centrifuge modelling study Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-02-29 Longhua Guan, Jing Zhang, Junchao Li, Yang Ding, Yubing Wang, Qiang Lu
A series of centrifuge model tests of buried explosions in dry sand were designed and performed to investigate the blast effects in diverse underground explosion (UE) scenarios. The typical ground deformation pattern and blast wave propagation in different types of UE events were modelled. The excavated cratering was observed in shallow-buried excavation explosion tests. Surface collapse and subsidence
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Theoretical model and experimental verification of flexoelectric response of porous plate under impact load and its application as passive and protective impact sensor Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-02-28 Hengchang Su, Xianhong Meng, Bing Hou, Rui Bao, Li-Hua Shao
Porous materials are widely used as protecting devices against low-velocity impacts due to their excellent energy absorption and dissipation capabilities. Thus, monitoring low-velocity impacts on porous materials is vital for safety assessment of humans and structures in industry. It is advantageous and cost-effective to enable porous materials to have the function of in-situ sensing without extra
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An overview of the test methodology used in current cycling helmet standards and literature Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-02-27 Ben Emsley, Jon Farmer, Paul Sherratt, Paul Goodall, Tom Jackson, Andrew West
Cycling helmets play a crucial role in protecting against head injuries, however, their effectiveness in mitigating all types of head injury is limited, particularly traumatic brain injuries (TBIs). This limitation is primarily attributed to the current cycling helmet standards, which inadequately represent real-world impact scenarios. Specifically, they overlook the rotational kinematics resulting
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Approximate theory of armour perforation by ductile hole expansion Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-02-27 Rami Masri, Shannon Ryan
The present study suggests a complete analytical model for armour perforation by ductile hole enlargement process. The new approximate model is applicable for entry, tunnelling and exit phases of a rigid nose-pointed projectile with an arbitrary nose-shape. The theory is based on dividing the target into infinitesimal thin layers, in which a cylindrical hole expansion is assumed. The elastoplastic
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Long beam on Winkler-type elastic foundation under a localized rectangular pressure pulse Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-02-22 D. Karagiozova, T.X. Yu
An analytical model is developed to describe the dynamic response of a long beam made of a perfectly plastic material and resting on a Winkler-type elastic foundation. A localized rectangular pressure pulse is applied causing large deflections requiring the consideration of the interaction between the bending moment and membrane force in the beam. The previously developed Membrane Factor Method (MFM)
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Numerical investigation of hypervelocity impact simulation with FEM/SPH formulation for space structures Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-02-21 Samet Ceri, Zahra Sharif Khodaei
This paper investigates the response of aluminum structures to hypervelocity impact (HVI) and the formation of debris clouds using the Adaptive Finite Element (FEM)/Smoothed Particle Hydrodynamics (SPH) method. The main objective is to accurately replicate the response of curved thin plates to various HVIs and to characterize the resulting debris cloud shapes., for representative of shielding structures
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Spatial decay of electromagnetic waves from hypervelocity impact plasmas Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-02-19 Raymond Lau, Nicolas Lee, Sigrid Elschot
Due to the high kinetic energy of impactors in space, hypervelocity impacts on spacecraft can ablate spacecraft material and produce plasmas. These plasmas have been observed in ground-based experiments to produce electromagnetic pulses (EMPs) and are suspected to be a cause of spacecraft anomalies. The initial EMP that is produced after plasma formation is replicated using a 2D electromagnetic plasma
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Numerical study on the phase-transition characteristics of debris cloud under hypervelocity impacts Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-02-19 Lv-tan Chen, Qi-guang He, Xiao-wei Chen
Hypervelocity impacts can cause material phase transitions. Solid-phase fragments retain the material strength and exhibit high penetration performance. Liquid- and gas-phase fragments have a much lower penetration performance but can still generate momentum and thermal impact on the rear plate. This study adopted the finite element-smoothed particle hydrodynamics (FE-SPH) adaptive method to simulate
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Experimental and numerical study on explosion cratering and coupled ground shock in clay Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-02-19 Benjun Shi, Xiaohui Xu, Jie Li, Gan Li, Wenyu Li, Tianhan Xu, Wei Guo, Haozhe Xing, Mingyang Wang
The ground shock induced by underground explosion poses a serious threat to underground projects. Currently, a unified calculation method for ground shock effects coupled with cratering effect has not been established owing to limited test data. This study adopted the ground shock effective crater volume as the energy source of the underground explosion. An equivalent calculation method for ground
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A theoretical method for scaling the dynamic response of steel beams subjected to blast loads Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-02-18 Sijia Liu, Li Chen, Bin Feng
Conducting experiments using scaled models is a highly efficient and cost-effective approach to predicting structural dynamic responses to blast loads. However, accurate representation of the prototype in a scaled model is hindered by the strain rate effect of the materials, thus limiting the application of scaled model tests. To address this issue, this paper proposes a theoretical correction method
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Oblique penetration of tungsten spheres against steel targets based on compressible and incompressible cavity expansion theory Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-02-18 T.L. Liu, X.F. Wang, B. Jia, Y.X. Xu
In penetration problems, empirical formulas from different sources may easily lead to calculation conflicts. In the present work, based on the spherical cavity expansion theory of compressible and incompressible models, the resistance decay model and the kinematics analysis of projectiles, a 3-Danalytical model for the oblique penetration of tungsten spheres against low-carbon steel targets was built
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Experimental and numerical investigation on radial impact of pneumatic tyre Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-02-18 Min Liu, Ziran Li, Yang Wang
Experimental testing and numerical modelling were conducted to investigate the dynamic responses of the pneumatic radial tyre subjected to radial impact loadings. A finite-element simulation strategy for the radial impact process of the pneumatic tyre was developed. Especially, uniaxial tensile tests at various strain rates up to the order of 10 were carried out to obtain the required stress – strain
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Ballistic impact modeling of woven composites using the microplane triad model with meso-scale damage mechanisms Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-02-17 Jamshid Ochilov, Taufiq Abdullah, Kedar Kirane
Existence of undulating fill and warp yarns in woven composite laminae introduces complex unit cell geometries and multi-scale interactions among the constituents. Due to these, the failure process involves various meso-scale constituent-level failure modes under complex loading scenarios such as ballistic impact. This can be challenging to model via conventional macro-scale damage tensor-based models
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Experimental and numerical investigation of steel–concrete composite beam subjected to contact explosion Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-02-15 Yi Xiao, Weiqing Zhu, Jian Song, Jinqing Jia, Zhi Li
The steel–concrete composite beam, consisting of a concrete slab, a steel beam, and shear connectors, is extensively utilized in bridge engineering due to its effective utilization of material properties and convenient construction. Considering the significant impact of explosive incidents on bridge safety, and the limited experimental research on blast performance of composite beams, this study tested
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Experimental evaluation on the mitigation performance of double-layered Kirigami corrugated cladding against impact load Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-02-15 Zhejian Li, Xianlong Wen, Taoyuan Ren, Peng Zhou, Yufeng Wen, Hong Hao, Wensu Chen
The impact mitigation performance of novel single and double-layered kirigami corrugated (KC) claddings is investigated in this study via drop weight impact tests, as their significant improvements in energy absorption and crushing resistance were previously demonstrated over conventional corrugated structures. The feasibility of mass production on the proposed large-size KC core is also verified by
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An analytical approach to deduce loading rate-sensitivity of fracture mode of concrete and mortar Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-02-14 R. Lukashov, G. Volkov
The fracture of two-component solids is considered in order to study the sensitivity of the failure mode to the loading rate. The incubation time approach, supplemented by the randomized Sign-Perturbed Sums (SPS) method, is applied to develop an analytical model to predict the difference in the fracture pattern under dynamic and static conditions. To verify and validate the model, experimental data
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High-velocity impact performance of AA 7475-T7351 aluminum square plates struck by steel projectiles: Assessing leakage limit velocity Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-02-10 Pouria. B. Ataabadi, Caio Magno de Assunção, Purnashis Chakraborty, Marcilio Alves
This paper presents numerical and experimental findings of high-velocity impact tests conducted on thin AA 7475-T7351 aluminum plates subjected to the impact of small cubical and spherical projectiles. The investigation includes an examination of the influence of different impact angles, namely edge-on, corner-on, and face-on orientations, on the target performance. Following each impact test, the
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How rate-based stretchability of soft solids controls fracture morphology in dynamic conical puncture Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-02-06 Bingyang Zhang, Philip S.L. Anderson
Puncture is a primary failure mechanism occurring in soft materials and biological tissues when subjected to impact and dynamic deep indentation. While many studies on puncture mechanics focus on the energies and forces associated with fracture, most of the existing models only capture qualitatively experimental measures at low rates and lack strong predictive power for the dynamic crack growth and
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Ballistic impact resistance of ultra-high-performance concrete (UHPC): A comprehensive experimental investigation and parametric analysis Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-02-05 Nabodyuti Das, Prakash Nanthagopalan
This study explores the ballistic impact resistance of Ultra-High Performance Concrete (UHPC) through an extensive and detailed experimental investigation. This study will address various gaps related to the impact performance of UHPC. This investigation focused on understanding the ballistic resistance performance of UHPC based on (a) the influence of projectile/bullet parameters (hardness, velocity/energy
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Blast resistance of grouting sleeve connected precast concrete columns under close-in explosions Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-02-02 J.X. Lu, H. Wu, Y.H. Cheng, G.Q. Chen
Attributed to the promotion of environmental protection and efficient construction, the precast concrete (PC) columns are gradually replacing the traditional reinforced concrete (RC) columns as the main load-bearing members of building structures. However, with the aggravation of deliberate or accidental explosions, there is a lack of study on the damage modes as well as dynamic responses of grouting
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Analysis of hydrodynamic ram and cavity evolution characteristics during high-velocity penetration of Zr55Cu30Al10Ni5 fragments into water-filled containers Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-02-01 Gang Wang, Lei Guo, Xin Chang, Hongyin Gao, Chuanting Wang, Yuan He, Jinyi Du, Peng Chen, Jian Pan, Yong He
Reactive material fragments are extensively employed in military fields due to the dual destructive properties of kinetic energy penetration and combustion/explosion upon impact with fuel tanks. In this study, we explored the phenomenon known as Hydrodynamic Ram (HRAM), which occurs when a high-speed projectile or debris impacts a liquid-filled container, resulting in extremely high pressure potentially
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A review of Whipple shield ballistic limit equations Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-01-26 S Ryan, WP Schonberg
Ballistic limit equations (BLEs) are semi-analytical expressions used to predict the risk posed by micrometeoroid and orbital debris (MMOD) impacts on a spacecraft. A foundational BLE, known as the new non-optimum (NNO) equation was published by Eric Christiansen of NASA Johnson Space Center in 1990 for application on Whipple shields – two-plate configurations consisting of a thin sacrificial plate
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Coupled effect of stress state and strain rate on ductile fracture of Ti6Al4V alloy Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-01-26 Wang Dou, Zejian Xu, Yang Han, Mengyu Su, Fenglei Huang
The ductility of metallic materials is recognized to be significantly affected by stress state and strain rate. However, systematic investigations on the impacts of stress state and strain rate on ductile behavior are infrequent, and only a minority of fracture models can consider both effects concurrently. This work aims to systematically investigate the ductile response of Ti6Al4V alloy over a broad
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An Expansion Model of Hypervelocity Impact-Generated Plasma Aided by Spectral Methods Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-01-23 Jie Wang, Liangfei Gong, Renrong Long, Li Chen, Qiang Wu, Siyuan Ren, Yijiang Xue, Qingming Zhang
Abstract not available
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Blast effect on layered polyurethane foam Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-01-24 Kaviarasu K., Alagappan P.
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Hypervelocity impact induced light flash experiments on single and dual layer Kapton targets to develop a time of flight space dust and debris detector Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-01-23 L.S. Alesbrook, M.J. Burchell, L.T. Cornwell, R.D. Corsaro, F. Giovane, J.-C. Liou, J. Tandy, P.J. Wozniakiewicz
The impact flash from hypervelocity impact on thin (12.5 µm) Kapton film was observed. The projectile sizes ranged from 0.1 to 1 mm, with speeds from 2 to 5 km s and penetrated the Kapton intact, leaving holes the same size as the projectile (to within measurement errors). The flash intensity (normalised to impactor mass) scaled with impact speed to the power 5.5. However, the data also suggest that
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Impact response of stainless steel tube locally-strengthened by concrete-filled steel tube Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-01-22 Tianhao Zhang, Yonghui Wang, Ximei Zhai, Xudong Zhi, Hongyuan Zhou, Xin Yu
This paper proposes a novel stainless-steel tube locally strengthened by a concrete-filled steel tube to resist impact loads. A drop hammer impact test system was used to determine the failure modes, impact forces, and displacement responses of the strengthened tubes under an impact load. The effects of the strengthening length and thickness of the concrete and outer steel tubes on the impact responses
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Impact dynamics of a free-falling reference test mass in space Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-01-17 D. Vignotto, D. Bortoluzzi
Outer space may constitute a privileged environment for experiments involving impacts. In fact, disturbing phenomena like drag or weight forces are negligible and a nearly pure free-fall state may be achieved for the impacting bodies. The case analysed in this manuscript comes from the initialization of the science phase of a space mission (LISA Pathfinder, flown in 2015), in which an extended metallic
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Influence of the cover plate thickness on the ballistic penetration of re-entrant auxetic structures Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-01-14 Robert Cavenagh, Paul J. Hazell, Dakshitha Weerasinghe, Hongxu Wang, Jianshen Wang, Damith Mohotti, Darren Fraser, J.P. Escobedo
This study investigated how mild steel cover plates of various thicknesses affected the collapse of re-entrant auxetic structures under penetration at 500 m/s by ø16 mm spherical projectiles. A combination of experimental and numerical methods was used to capture this effect with auxetic structures made from 3D printed titanium alloy (Ti6Al4V) and ABS plastic (acrylonitrile butadiene styrene), and
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A material selection approach for protecting carbon/epoxy laminates against single and repeated low-velocity impacts Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-01-15 Raúl Muñoz, Rocío Seltzer, Vanesa Martínez, Carlos González, Javier Llorca
This paper evaluates the impact performance of various materials against single and repeated low-velocity impacts. The objective is to identify a lightweight, thin, and cost-effective bumper that can effectively protect a composite aircraft structure. Drop-weight impact tests were performed on eight candidate materials with similar areal densities, including three 3D woven and three 2D woven composites
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The response of dry and wet silica sand to high velocity impact Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-01-13 B.S. Kuwik, J. Moreno, M. Shaeffer, G. Simpson, R.C. Hurley
Understanding the mechanisms governing the interaction of high-velocity projectiles and sand targets is important for numerous applications and industries. The high-velocity penetration of sand targets is known to be controlled by micromechanical phenomena; however, our quantification of these phenomena and our understanding of water saturation effects on target response is presently limited. To help
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Scaling laws of low-velocity impact response for RC beams: Impact force and reaction force Int. J. Impact. Eng. (IF 5.1) Pub Date : 2024-01-10 Jian Li, Renbo Zhang, Liu Jin, Dongqiu Lan, Xiuli Du
Predicting the low-velocity impact response of the prototype based on the scaled test results is one of the significant topics in structural design and protection. Thus, reliable similarity laws are required to bridge the dynamic similarity between models and prototypes. In this study, numerical modeling was carried out by considering plastic damage and strain rate effects. Then, the impact responses