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Cyclic loading and unloading strain equations and damage evolution of gypsum specimens considering damping effects Int. J. Damage Mech. (IF 4.2) Pub Date : 2024-05-17 Di Wu, Laiwang Jing, Wei Jing, Shaochi Peng
This study aims to establish a strain instanton equation and damage factor evolution law for gypsum specimens by considering damping. First, damping energy is calculated based on the single-degree-of-freedom vibration model, and the instantaneous strain equation is obtained based on the stress balance equation. Second, the dissipation energy is divided into damping and damage energies, and a damage-factor
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Physics-Informed Parallel Neural Networks with self-adaptive loss weighting for the identification of continuous structural systems Comput. Methods Appl. Mech. Eng. (IF 7.2) Pub Date : 2024-05-15 Rui Zhang, Gordon P. Warn, Aleksandra Radlińska
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Train small, model big: Scalable physics simulators via reduced order modeling and domain decomposition Comput. Methods Appl. Mech. Eng. (IF 7.2) Pub Date : 2024-05-15 Seung Whan Chung, Youngsoo Choi, Pratanu Roy, Thomas Moore, Thomas Roy, Tiras Y. Lin, Du T. Nguyen, Christopher Hahn, Eric B. Duoss, Sarah E. Baker
Numerous cutting-edge scientific technologies originate at the laboratory scale, but transitioning them to practical industry applications is a formidable challenge. Traditional pilot projects at intermediate scales are costly and time-consuming. An alternative, the pilot-scale model, relies on high-fidelity numerical simulations, but even these simulations can be computationally prohibitive at larger
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A study on the influence of impurity content on fatigue endurance in a 6082 Al-alloy Int. J. Fatigue (IF 6.0) Pub Date : 2024-05-15 Aritra Sarkar, Mehmet Aktunali, Siri Marthe Arbo, Jon Holmestad, Luigi Mario Viespoli, Bård Nyhus, Geir Ringen, Nima Razavi
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A modified Manson-Halford model based on improved WOA for fatigue life prediction under multi-level loading Int. J. Damage Mech. (IF 4.2) Pub Date : 2024-05-15 Yibo Yang, Li Zou, Xinyu Cao, Xinhua Yang, Yibo Sun
The Manson-Halford (M-H) nonlinear cumulative damage model is widely applied for fatigue life analysis problems under multi-level loading. In this model, the influence of loading sequence on the fatigue life can be better considerer, but the loading interaction effect is ignored. An improved whale optimization algorithm (IWOA) by integrating multiple strategies is proposed. The ability of global search
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Exploring freeze-thaw damage distribution of asphalt mixture through DIC in combination with CT Int. J. Damage Mech. (IF 4.2) Pub Date : 2024-05-15 Hengzhen Li, Hao Shi, Huining Xu, Yu Tian, Yiqiu Tan, Kaidi Liu
Open graded friction course (OGFC) is highly susceptible to environmental impacts such as load and clogging, due to its rich void structure and exposure to environments. Especially in cold regions, freeze–thaw (F-T) damage is inevitable for OGFC. While the existing analysis methods cannot specifically describe the material's micro-response to load or environment. Therefore, the digital image correlation
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Fluvial bedload transport modelling: advanced ensemble tree-based models or optimized deep learning algorithms? Eng. Appl. Comput. Fluid Mech. (IF 6.1) Pub Date : 2024-05-10 Khabat Khosravi, Aitazaz A. Farooque, Sayed M. Bateni, Changhyun Jun, Dorsa Mohammadi, Zahra Kalantari, James R. Cooper
The potential of advanced tree-based models and optimized deep learning algorithms to predict fluvial bedload transport was explored, identifying the most flexible and accurate algorithm, and the o...
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Finite kinematics diffuse interface mechanics coupled to solid composite propellant deflagration Comput. Methods Appl. Mech. Eng. (IF 7.2) Pub Date : 2024-05-14 Maycon Meier, Brandon Runnels
Solid Composite Propellants (SCPs) are widely employed in the field of propulsion due to their enduring chemical and mechanical stability during extended periods of storage, as well as their uncomplicated production and reliable performance. Unlike liquid propellants, solid propellants are self-supporting, meaning that that they function as structural materials as well as energetic. Consequently, it
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Strain-based analysis on the influence of local undercut geometry on fatigue crack initiation life Int. J. Fatigue (IF 6.0) Pub Date : 2024-05-14 Abinab Niraula, Heikki Remes, Alain Nussbaumer
The local undercut defects at the weld toe provide a potential initiation site for fatigue cracks and significantly impact the structure’s fatigue strength. The influence of continuous undercut depth on fatigue performance is widely studied, but the research on the influence of local undercut geometry is limited. In this research, the influence of the 3D undercut geometry on the fatigue strength of
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Mechanism analysis of the abnormal head-cover vibration of an ultra-high-head pump-turbine operating in pump mode by CFD and FEM Eng. Appl. Comput. Fluid Mech. (IF 6.1) Pub Date : 2024-05-10 Song Xue, Haolin Tian, Yongguang Cheng, Xiaoxia Hou, Ziwu Guan, Weijia Yang, Zhiyuan Wang, Zhaoning Wang, Qiyuan He
Hydraulic excitation causes abnormal head-cover vibration in some pump-turbines, particularly as design heads continue to rise. Pump-turbines with heads exceeding 600 m have reported such vibration...
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Fretting fatigue behavior of helical-torsional contact steel wire in wire rope Int. J. Fatigue (IF 6.0) Pub Date : 2024-05-13 Kun Huang, Yuxing Peng, Xiangdong Chang, Zhou Zhou, Gushuo Jiang, Hao Lu, Wei Tang, Zhiyuan Shi, Gaofang Wang, Xiuheng Zhang
Fretting wear and torsional deformation of steel wire can reduce the performance of wire rope and threaten the safety of mine hoisting system. In this study, to explore the influence of different torsional deformation on the fretting fatigue wear behavior under multi-wire spiral contact, an experimental study was conducted on a self-made test apparatus. The results show that the increase of torsional
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Generalizing multiaxial vibration fatigue criteria in the frequency domain: A data-driven approach Int. J. Fatigue (IF 6.0) Pub Date : 2024-05-12 Xianjun Pei, Yuda Cao, Tang Gu, Mingjiang Xie, Pingsha Dong, Zhigang Wei, Jifa Mei, Tairui Zhang
Random vibration fatigue of structures is intrinsically multiaxial, driven by complex stress states. Non-proportional multiaxial stresses exacerbate fatigue damage compared to proportional stresses. Frequency domain fatigue analysis is generally more efficient for structures operating near natural frequencies. However, handling non-proportional multiaxial stress effects in the frequency domain remains
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Uniaxial and multiaxial cyclic deformation behavior prediction of Z2CN18.10 austenitic stainless steel based on Transformer deep learning method Int. J. Fatigue (IF 6.0) Pub Date : 2024-05-12 Caiming Liu, Xu Chen, Weiqiu Chen, Liting Shi, Wenkai Li, Xuming Su, Yandong Shi
In this study, the experimental study of cyclic deformation behavior of Z2CN18.10 austenitic stainless steel under uniaxial, cross, rhombus and circular paths is investigated. Based on Transformer deep learning method, three models are built to predict the cyclic deformation behavior of the material. One is the single input–single output model, which is used to predict the uniaxial cyclic deformation
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A thermodynamically consistent physics-informed deep learning material model for short fiber/polymer nanocomposites Comput. Methods Appl. Mech. Eng. (IF 7.2) Pub Date : 2024-05-11 Betim Bahtiri, Behrouz Arash, Sven Scheffler, Maximilian Jux, Raimund Rolfes
This work proposes a physics-informed deep learning (PIDL)-based constitutive model for investigating the viscoelastic–viscoplastic behavior of short fiber-reinforced nanoparticle-filled epoxies under various ambient conditions. The deep-learning model is trained to enforce thermodynamic principles, leading to a thermodynamically consistent constitutive model. To accomplish this, a long short-term
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On the locality of local neural operator in learning fluid dynamics Comput. Methods Appl. Mech. Eng. (IF 7.2) Pub Date : 2024-05-11 Ximeng Ye, Hongyu Li, Jingjie Huang, Guoliang Qin
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A phase-field model for the brittle fracture of Euler–Bernoulli beams coupling stretching and bending Comput. Methods Appl. Mech. Eng. (IF 7.2) Pub Date : 2024-05-11 Giovanni Corsi, Antonino Favata, Stefano Vidoli
Damage gradient models seek to simulate fracture mechanics by modulating the material stiffness. Within this framework, a singular scalar field representing damage is commonly utilized to globally decrease elastic energy. However, when considering structural models like beams and plates, this approach often fails to adequately capture important aspects due to the interaction between stretching and
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Influence of the strain rate on the fatigue behaviour of fully ferritic high chromium steel and P91 steel at high temperatures Int. J. Fatigue (IF 6.0) Pub Date : 2024-05-11 P. Lehner, B. Blinn, T. Fischer, B. Kuhn, T. Beck
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Research on the influence of ultra-low temperature extreme environments on the surface quality and fatigue life of FeCoCrNiAl0.6 high entropy alloy Int. J. Fatigue (IF 6.0) Pub Date : 2024-05-11 Ping Zhang, Zhenyong Lin, Xiujie Yue, Yajie Sun, Hanping Zhou, Jinlong Zhang
This study examines the impact of low-temperature cooling on the surface integrity and fatigue properties of the FeCoCrNiAl high entropy alloy during machining. Utilizing Abaqus2023/Fe-safe simulations, liquid nitrogen cooling, and fatigue tensile tests, it was observed that low-temperature machining improves surface quality and increases tensile strength and fatigue life compared to room temperature
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A damage constitutive model for consistent description of static and fatigue behaviors of ultra-high performance concrete containing coarse aggregate Int. J. Fatigue (IF 6.0) Pub Date : 2024-05-11 Lijian Li, Le Huang, Yin Chi, Lihua Xu
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Stress, damage, and fatigue performance analysis of CFRP/Al double-sided countersunk riveted joints with variable rivet-hole clearance Int. J. Fatigue (IF 6.0) Pub Date : 2024-05-11 Minghao Zhang, Zengqiang Cao, Yingjiang Guo, Yuejie Cao, Guo Zheng, Lubin Huo
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Crack propagation simulation and overload fatigue life prediction via enhanced physics-informed neural networks Int. J. Fatigue (IF 6.0) Pub Date : 2024-05-11 Zhiying Chen, Yanwei Dai, Yinghua Liu
The fatigue crack growth simulation and life prediction of structures are implemented in this paper based on the physics-informed neural networks (PINNs). Firstly, the enhanced PINNs are proposed by introducing the crack tip asymptotic displacement fields, so that the crack tip stress intensity factors can be calculated accurately even when the number of collocation points is small and the distribution
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Phase-field simulation and coupled criterion link echelon cracks to internal length in antiplane shear J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-05-11 Gergely Molnár, Aurélien Doitrand, Véronique Lazarus
This paper provides a comprehensive numerical analysis of daughter crack localization in pure antiplane shear. Although antiplane shear fracture is important in various industrial applications, understanding the morphology of the resulting fragmentation remains challenging. The paper develops innovative phase-field models to induce the facets using a small spatial variation in the toughness field and
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Fatigue characteristics of rubber isolation layers used in high speed railway ballastless tracks: A theoretical and experimental study Int. J. Fatigue (IF 6.0) Pub Date : 2024-05-10 Xingwang Sheng, Juncan Liao, Weiqi Zheng, Zhihui Zhu, Chao Lin
In order to enhance operational conditions for high-speed trains on long-span bridges, the utilization of rubber under-ballast mats were taken as a novel isolation layer in ballastless tracks. Due to the increased train axle load, it is imperative to conduct investigation into the fatigue properties of the rubber isolation layer, so as to ensure the smoothness of the railways. In this work, a series
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New approach to low-cycle fatigue lifetime prediction for deep-rectangular notched components with finite residual thickness: Experiment and simulation Int. J. Fatigue (IF 6.0) Pub Date : 2024-05-10 Tongfei Zou, Meng Liu, Quanyi Wang, Yunqing Jiang, Hao Wu, Hong Zhang, Yubing Pei, Yongjie Liu, Qingyuan Wang
The introduction of notches in engineering components often has detrimental effects on fatigue behavior. Current research on finite residual thickness is extremely limited, especially when dealing with more complex geometric shapes of notches. In this study, the low-cycle fatigue (LCF) life of cylindrical components with deep-rectangular notches were predicted based on the theory of critical distance
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Stokes problem with slip boundary conditions using stabilized finite elements combined with Nitsche Comput. Methods Appl. Mech. Eng. (IF 7.2) Pub Date : 2024-05-09 Rodolfo Araya, Alfonso Caiazzo, Franz Chouly
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Finite deformation analysis of bi-modulus thermoelastic structures and its application in wrinkling prediction of membranes Comput. Methods Appl. Mech. Eng. (IF 7.2) Pub Date : 2024-05-09 Xiaoqiang Ren, Zongliang Du, Hayoung Chung, Shan Tang, Yunhang Guo, Biaosong Chen, Xu Guo
Tension–compression asymmetry, thermal-mechanical coupling, and finite deformation effects are common characters of many biological materials and engineering structures. By introducing different elastic constants under tension and compression, a thermo-mechanical bi-modulus constitutive model and a subsequent efficient computational analysis framework are proposed in the finite deformation regime.
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Data-driven discovery of interpretable Lagrangian of stochastically excited dynamical systems Comput. Methods Appl. Mech. Eng. (IF 7.2) Pub Date : 2024-05-09 Tapas Tripura, Satyam Panda, Budhaditya Hazra, Souvik Chakraborty
Exploring the intersection of deterministic and stochastic dynamics, this paper delves into Lagrangian discovery for conservative and non-conservative systems under stochastic excitation. Traditional Lagrangian frameworks, adept at capturing deterministic behavior, are extended to incorporate stochastic excitation. The study critically evaluates recent computational methodologies for learning Lagrangians
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Joint-mode diffusion analysis of spectral/hp continuous Galerkin methods: Towards superior dissipation estimates for implicit LES Comput. Methods Appl. Mech. Eng. (IF 7.2) Pub Date : 2024-05-09 R.C. Moura, L.D. Fernandes, A.F.C. da Silva, S.J. Sherwin
We present a new linear eigensolution analysis technique that provides superior estimates of dissipation distribution in wavenumber space for the continuous Galerkin (CG) method. The technique builds upon traditional dispersion–diffusion analyses that have been applied to spectral/hp element methods, but in particular is an improvement upon the non-modal eigenanalysis approach proposed by Fernandez
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Very high cycle fatigue of a notched Ni-based single crystal superalloy at high temperature Int. J. Fatigue (IF 6.0) Pub Date : 2024-05-09 A. Vicente Morales, F. Mauget, B. Larrouy, P. Villechaise, J. Cormier
A new notched geometry has been developed for ultrasonic fatigue testing of CMSX-4 single crystal Ni-based superalloy specimens at 1000 °C. Ultrasonic fatigue tests were carried out at 1000 °C, R = -1 and 20 kHz using this new geometry. Two competing crack initiation mechanisms were identified for the studied range of fatigue lives: internal crack initiation from a casting pore associated to a rough
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VHCF behavior and defect tolerance of modified bainitic 100Cr6 with a high retained austenite content Int. J. Fatigue (IF 6.0) Pub Date : 2024-05-09 P. Ostermayer, B. Blinn, U. Krupp, T. Beck
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A thermodynamic theory coupling photo-chemo-mechano interactions for light-responsive hydrogel J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-05-09 Zhe Chen, Xuehan Yang, Xuhan Liu, Chuang Li, Shaoxing Qu, Wei Yang
Light-responsive hydrogel, as a typical functional hydrogel, is composed of crosslinked hydrophilic polymer chains, photosensitive molecules and water. Under illumination, the photosensitive molecules exhibit a transition in hydrophilic/ hydrophobic properties, leading to migration of water molecules and deformation of the hydrogel based on the temporal and spatial distribution of light. In this study
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Gradient preserving Operator Inference: Data-driven reduced-order models for equations with gradient structure Comput. Methods Appl. Mech. Eng. (IF 7.2) Pub Date : 2024-05-08 Yuwei Geng, Jasdeep Singh, Lili Ju, Boris Kramer, Zhu Wang
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Automated linear solver selection for simulation of multiphysics processes in porous media Comput. Methods Appl. Mech. Eng. (IF 7.2) Pub Date : 2024-05-08 Yury Zabegaev, Eirik Keilegavlen, Einar Iversen, Inga Berre
Porous media processes involve various physical phenomena such as mechanical deformation, transport, and fluid flow. Accurate simulations must capture the strong couplings between these phenomena. Choosing an efficient solver for a multiphysics problem usually entails the decoupling into subproblems related to separate physical phenomena. Then, the suitable solvers for each subproblem and the iteration
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Damage accumulation and its effect during thermal- and stress-induced cycling martensite transformation of laser powder bed fused (LPBF) NiTi alloy Int. J. Fatigue (IF 6.0) Pub Date : 2024-05-08 Q.Q Zhang, W.K. Sun, M.R. Gao, Y.T. Liu, S.J. Hao, L.S. Cui, L.Q. Ren, Z.H. Zhang
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Propagation rate transients in J-controlled fatigue characterization of adhesives Int. J. Fatigue (IF 6.0) Pub Date : 2024-05-08 Carlos G. Dávila, Shawn Weeks, Michael Czabaj
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A micromechanical scheme with nonlinear concentration functions by physics-guided neural network J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-05-08 Ce Chen, Liujun Wu, Jiaqi Fu, Chenyang Xin, Wenbin Liu, Huiling Duan
The mechanical behavior of heterogeneous materials has been reported to be significantly influenced by the nonlinear properties of both the matrix and interface. However, the micromechanical homogenization methods for predicting the effective properties are challenged in nonlinear problems due to the difficulties in solving the analytical form of the concentration tensors. In this study, we develop
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A local multi-layer approach to modelling interactions between shallow water flows and obstructions Comput. Methods Appl. Mech. Eng. (IF 7.2) Pub Date : 2024-05-07 James Mckenna, Vassilis Glenis, Chris Kilsby
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Embedded large eddy simulation of boundary layer transition behind a micro-ramp Eng. Appl. Comput. Fluid Mech. (IF 6.1) Pub Date : 2024-05-07 Yujing Lin, Jian Wang, Andy Augousti
Boundary layer transition induced by surface roughness elements plays an important role in aerodynamic and aero-thermodynamic design of subsonic/supersonic/hypersonic vehicles. However, the effect ...
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Modelling of microscopic crack initiation behaviour of fretting fatigue based on X-ray micro-computed tomography scan Int. J. Fatigue (IF 6.0) Pub Date : 2024-05-07 Sutao Han, Nana Yang, Lihua Wang, Magd Abdel Wahab
Fretting fatigue is a particularly destructive form of fatigue failure that has drawn significant attention from researchers. This paper proposes a numerical modelling method based on tomography scan to investigate the impact of inclusions on fretting fatigue crack initiation behaviour. The results reveal that inclusions can affect the crack initiation direction and reduce the initiation lifetime.
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Investigations of fatigue crack growth rate behaviour and life prediction of Si3N4/TiB2 reinforced hybrid metal matrix composites Int. J. Fatigue (IF 6.0) Pub Date : 2024-05-07 Anant Prakash Agrawal, Sunil Kumar Srivastava
Many engineering structures and components experience complex fatigue loading throughout their operational lifespan. Economically, it is crucial to forecast the remaining lifespan to prevent catastrophic failure by implementing appropriate inspection schedules. The aim of present work is to investigate the fatigue, and fracture performances of AA7075 alloy-based hybrid MMCs containing SiN/TiB reinforcement
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An approach to estimate the low cycle fatigue probabilistic curves of PBF-LB/M 316L steel from small size datasets using the remora optimization algorithm Int. J. Fatigue (IF 6.0) Pub Date : 2024-05-07 Yefeng Chen, Xiaowei Wang, Zhen Zhang, Dewen Zhou, Yong Jiang, Jian Weng, Frank Walther, Jianming Gong
The significant dispersion in fatigue properties is a prevalent attribute observed in metals manufactured by the Additive Manufacturing (AM). To ascertain the safety of components subjected to low cycle fatigue (LCF) loadings at a temperature of 550 °C, it is necessary to carry out a fatigue reliability assessment of AM metals. Nevertheless, the number of LCF life tests is limited owing to time-consuming
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Impact fatigue behavior of laser metal deposition 316L stainless steel with an automated impact fatigue system based on split Hopkinson bar technique Int. J. Fatigue (IF 6.0) Pub Date : 2024-05-07 Boli Li, Sihan Zhao, Jianjun Wang, Penghui Li, Yuanmeng Liu, Ruifeng Wang, Kangbo Yuan, Meng Gao, Weiguo Guo, Chunhuan Guo, Fengchun Jiang
Repeated impact subjecting on the key components of equipment is always characterized by extremely high loading rate loading, while plastic deformation of most metals depends on loading rate. To ensure the reliability and security of these components, it is necessary to understand the loading rate effect on the fatigue performance. In this study, an automated impact fatigue system based on split Hopkinson
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Cracking of soft collagenous tissues under suture retention J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-05-06 Jingda Tang, Jiayi Lin, Tiejun Wang
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Quantized impact of rod on plate J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-05-06 Qing Peng, Xiaoming Liu, Yue-Guang Wei
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Fracture mechanics approach to minimum reinforcement design of fibre-reinforced and hybrid-reinforced concrete beams Int. J. Damage Mech. (IF 4.2) Pub Date : 2024-05-06 Alessio Rubino, Federico Accornero, Alberto Carpinteri
The problem of the minimum reinforcement condition in fibre-reinforced and hybrid-reinforced concrete flexural elements is addressed in the framework of fracture mechanics by means of the Updated Bridged Crack Model (UBCM). The model describes the crack propagation process occurring in the critical cross-section of the reinforced member, by assuming the composite as a multiphase material, whereby the
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A convex cone programming based implicit material point method Comput. Methods Appl. Mech. Eng. (IF 7.2) Pub Date : 2024-05-04 Xi-Wen ZHOU, Yin-Fu JIN, Kai-Yuan HE, Zhen-Yu YIN
For conventional Material Point Method (MPM), both explicit-based and implicit-based MPM have shortcomings: explicit MPM has high requirements on time steps, and implicit MPM has high requirements on convergence. To circumvent these limitations, this paper innovatively proposes a convex cone programming-based implicit MPM (CP-MPM) algorithm, which ensures excellent convergence of solving complex problems
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Fatigue failure analysis of U75V rail material under Ⅰ+Ⅱ mixed-mode loading: Characterization using peridynamics and experimental verification Int. J. Fatigue (IF 6.0) Pub Date : 2024-05-04 Xiaochuan Ma, Weibin Yin, Yajie Wang, Linya Liu, Xianghe Wang, Yao Qian
Fatigue failure behavior of U75V rail material under Ⅰ+Ⅱ mixed-mode loading is analyzed and characterized in this work. A fatigue crack propagation experiment was carried out on U75V rail material under mixed-mode loading for = 0.1. Then, based on the Ordinary State-Based Peridynamic (OSB PD) theory, bond strain rate and bond energy release rate methods were used to characterize the fatigue failure
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High fatigue performance and microscopic mechanisms of in-situ TiB2/7050Al composite at different temperatures Int. J. Fatigue (IF 6.0) Pub Date : 2024-05-04 Liufang Ma, Xian Luo, Hong Wang, Rui Hu, Xiaowei Yi, Chaoxian Zhou, Wei Chen, Gang Ran
In this work, the fatigue properties of in-situ TiB particle-reinforced 7050 Al-matrix (TiB/7050Al) composites at room temperature (RM), 100 ℃ and 150 ℃ were studied, respectively, and the microstructure changes, fatigue fracture characteristics and fracture mechanism were analyzed. The results indicate that when the fatigue temperature increased, the amount of S phase precipitation along grain boundaries
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Behavior of geometrically-similar Basalt FRP bars-reinforced concrete beams under dynamic torsional loads Int. J. Damage Mech. (IF 4.2) Pub Date : 2024-05-04 Yushuang Lei, Liu Jin, Wenxuan Yu, Xiuli Du
A numerical model utilizing 3D mesoscale simulation methods was developed to investigate the influence of strain rate on the torsional performance of geometrically similar Basalt Fiber Reinforced Polymer bars-reinforced concrete (BFRP-RC) beams, as well as the corresponding size effects. The model incorporates concrete heterogeneity, material strain rate effects, and the dynamic bond-slip relationship
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Contribution of high turbidity to tidal dynamics in a curved channel in Zhoushan Islands, China Eng. Appl. Comput. Fluid Mech. (IF 6.1) Pub Date : 2024-05-02 Li Li, Fangzhou Shen, Zhiguo He, Gangfeng Ma, Jiachen Wang, Kailong Huangfu
The curved tidal channel, Luotou Deep-water Navigational Channel, is the main channel of the Ningbo Zhoushan Port, which is ranked first in the world. Tidal dynamics in the channel are spatially an...
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Data-driven hierarchical multiscale FDEM for simulating rock meso-macro mechanical behavior Comput. Methods Appl. Mech. Eng. (IF 7.2) Pub Date : 2024-05-03 Ruifeng Zhao, Zhijun Wu, Xiangyu Xu, Zhiyang Wang
This study presents a data-driven based hierarchical multiscale combined finite-discrete element method (DHM-FDEM) for accurately reproducing rock macro-scale mechanical behavior while ensuring acceptable computational costs. To construct the DHM-FDEM scheme, firstly, upscale finite elements assembly (UFEA) and upscale crack elements assembly (UCEA) are constructed, incorporating meso-scale finite
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Neural-Integrated Meshfree (NIM) Method: A differentiable programming-based hybrid solver for computational mechanics Comput. Methods Appl. Mech. Eng. (IF 7.2) Pub Date : 2024-05-03 Honghui Du, QiZhi He
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Bayesian conditional diffusion models for versatile spatiotemporal turbulence generation Comput. Methods Appl. Mech. Eng. (IF 7.2) Pub Date : 2024-05-03 Han Gao, Xu Han, Xiantao Fan, Luning Sun, Li-Ping Liu, Lian Duan, Jian-Xun Wang
Turbulent flows, characterized by their chaotic and stochastic nature, have historically presented formidable challenges to predictive computational modeling. Traditional eddy-resolved numerical simulations often require vast computational resources, making them impractical or infeasible for numerous engineering applications. As an alternative, deep learning-based surrogate models have emerged, offering
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A novel decoupled approach combining invertible cross-entropy method with Gaussian process modeling for reliability-based design and topology optimization Comput. Methods Appl. Mech. Eng. (IF 7.2) Pub Date : 2024-05-03 Thu Van Huynh, Sawekchai Tangaramvong, Bach Do, Wei Gao
Design optimization considering the presence of uncertainties in parameters poses an extremely challenging problem. The source of difficulties comes with reliability-based formulations, where addressing the probabilistic problem exhausts the large computing efforts for failure estimations of the structure violating limit-state functions (LSFs). This paper proposes a novel decoupled approach for effectively
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Detection of early fatigue damage during ultrasonic fatigue testing of steel by acoustic emission monitoring Int. J. Fatigue (IF 6.0) Pub Date : 2024-05-03 M. Seleznev, A. Weidner, H. Biermann
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I too [formula omitted]: A new class of hyperelastic isotropic incompressible models based solely on the second invariant J. Mech. Phys. Solids (IF 5.3) Pub Date : 2024-05-03 Ellen Kuhl, Alain Goriely
In contemporary elasticity theory, the strain–energy function predominantly relies on the first invariant of the deformation tensor; a practice that has been influenced by models derived from rubber elasticity. However, this approach may not fully capture the complexities of materials exhibiting pronounced shear deformations, such as very soft biological tissues. Here, we explore the implications and
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Strain energy density and entire fracture surface parameters relationship for LCF life prediction of additively manufactured 18Ni300 steel Int. J. Damage Mech. (IF 4.2) Pub Date : 2024-05-03 Wojciech Macek, Ricardo Branco, Joel de Jesus, José Domingos Costa, Shun-Peng Zhu, Reza Masoudi Nejad, Andrew Gryguć
In this study, the connection between total strain energy density and fracture surface topography is investigated in additively manufactured maraging steel exposed to low-cycle fatigue loading. The specimens were fabricated using laser beam powder bed fusion (LB-PBF) and examined under fully-reversed strain-controlled setup at strain amplitudes scale from 0.3% to 1.0%. The post-mortem fracture surfaces
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A robust finite strain isogeometric solid-beam element Comput. Methods Appl. Mech. Eng. (IF 7.2) Pub Date : 2024-05-02 Abdullah Shafqat, Oliver Weeger, Bai-Xiang Xu
In this work, an efficient and robust isogeometric three-dimensional solid-beam finite element is developed for large deformations and finite rotations with merely displacements as degrees of freedom. The finite strain theory and hyperelastic constitutive models are considered and B-Spline and NURBS are employed for the finite element discretization. Similar to finite elements based on Lagrange polynomials
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Prismatic-element SBPML coupled with SBFEM for 3D infinite transient wave problems Comput. Methods Appl. Mech. Eng. (IF 7.2) Pub Date : 2024-05-01 Guoliang Zhang, Mi Zhao, Junqi Zhang, Xiuli Du
In this paper, an enhanced prismatic-element scaled boundary perfectly matched layer (SBPML) is developed, which is a novel time-domain artificial boundary method for 3D infinite wave problems. The SBPML permits the utilization of an artificial boundary with general geometry and can consider planar physical surfaces and interfaces extending to infinity. Moreover, this enhancement enables the seamless
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Stress ratio influence on Paris parameter and fatigue driving force pertinent to material properties Int. J. Fatigue (IF 6.0) Pub Date : 2024-05-01 Chunguo Zhang, Panpan Wu, Shengyong Mu, Yuanzhe Dong