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A forward–backward greedy approach for sparse multiscale learning Comput. Methods Appl. Mech. Eng. (IF 6.588) Pub Date : 2022-08-13 Prashant Shekhar, Abani Patra
Multiscale models are known to be successful in uncovering and representing structure in data at different resolutions. We propose here a feature driven Reproducing Kernel Hilbert Space (RKHS) for which the associated kernel has a weighted multiscale structure. For generating approximations in this space, we provide a practical forward–backward algorithm that is shown to greedily construct a set of
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Study on the relation between surface integrity and contact fatigue of carburized gears Int. J. Fatigue (IF 5.489) Pub Date : 2022-08-13 Xiuhua Zhang, Peitang Wei, Robert G. Parker, Guoliang Liu, Huaiju Liu, Shaojie Wu
Surface integrity is critical for gear contact fatigue performance. The relation between gear surface integrity and contact fatigue remains unclear, which is a challenge for gear anti-fatigue design. This study investigates the relation between surface integrity and contact fatigue of 18CrNiMo7-6 carburized gears through fatigue experiments and data-driven modeling. A series of gear contact fatigue
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Fatigue performance and acoustic emission behavior of remanufactured low-carbon steel made by wire and arc additive manufacturing Int. J. Fatigue (IF 5.489) Pub Date : 2022-08-08 Jingjing He, Xiaohui Feng, Xinyan Wang, Xuefei Guan
The fatigue behavior of low-carbon steel made by wire and arc additive manufacturing (WAAM) is studied. The role of the microstructures underpins the difference in fatigue performance between WAAM and hot-rolled materials is investigated using scanning electron microscopy (SEM), optical metallography, and in-situ acoustic emission. Results show the WAAM low-carbon steel has a lower fatigue crack growth
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Quasi-static crack front deformations in cohesive materials J. Mech. Phys. Solids (IF 5.582) Pub Date : 2022-08-12 Mathias Lebihain, Thibault Roch, Jean-François Molinari
When a crack interacts with material heterogeneities, its front distorts and adopts complex tortuous configurations that are reminiscent of the energy barriers encountered during crack propagation. As such, the study of crack front deformations is key to rationalize the effective failure properties of micro-structured solids and interfaces. Yet, the impact of a localized dissipation in a finite region
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Model of void nucleation on grain boundaries in dynamic failure of ductile metals incorporating interface incompatibility J. Mech. Phys. Solids (IF 5.582) Pub Date : 2022-08-12 Haonan Sui, Long Yu, Wenbin Liu, Ying Liu, Huiling Duan
Void nucleation on grain boundary (GB) has been regarded as an important mechanism of damage initiation in ductile polycrystalline materials under dynamic loading. The high tensile stress induced by this loading mode enables interface incompatibility (i.e. the incompatibility of mechanical properties across the GB) to significantly affect intergranular spall damage initiation. In the present work,
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Dislocation dynamics in heterogeneous nanostructured materials J. Mech. Phys. Solids (IF 5.582) Pub Date : 2022-08-12 Shuozhi Xu, Justin Y. Cheng, Nathan A. Mara, Irene J. Beyerlein
Crystalline materials can be strengthened by introducing dissimilar phases that impede dislocation glide. At the same time, the changes in microstructure and chemistry usually make the materials less ductile. One way to circumvent the strength-ductility dilemma is to take advantage of heterogeneous nanophases which simultaneously serve as dislocation barriers and sources. Owing to their superior mechanical
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Construction of reduced order operators for hydroelastic vibrations of prestressed liquid–structure systems using separated parameters decomposition Comput. Methods Appl. Mech. Eng. (IF 6.588) Pub Date : 2022-08-11 C. Hoareau, J.-F. Deü, R. Ohayon
This study deals with the computation of parameterized reduced order models for hydroelastic vibrations of interior fluid–structure systems with a free surface. The main parameter is the weight of the liquid acting on the structure, which allows static and dynamic simulations for different liquid heights in a tank. Both the structure and the liquid domains are mapped in reference configurations, which
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Efficient linear, fully-decoupled and energy stable numerical scheme for a variable density and viscosity, volume-conserved, hydrodynamically coupled phase-field elastic bending energy model of lipid vesicles Comput. Methods Appl. Mech. Eng. (IF 6.588) Pub Date : 2022-08-12 Xiaofeng Yang
We first establish a variable density and viscosity, volume-conserved, hydrodynamically coupled phase-field variable elastic bending energy model for lipid vesicles, and then construct an efficient time-discrete scheme for solving it. The numerical scheme combines the penalty method for solving the Navier–Stokes equation, the explicit-IEQ (invariant energy quadratization) method for the nonlinear potentials
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Semi-implicit fluid–structure interaction in biomedical applications Comput. Methods Appl. Mech. Eng. (IF 6.588) Pub Date : 2022-08-12 Richard Schussnig, Douglas R.Q. Pacheco, Manfred Kaltenbacher, Thomas-Peter Fries
Fluid–structure interaction (FSI) incorporates effects of fluid flows on deformable solids and vice versa. Complex biomedical problems in clinical applications continue to challenge numerical algorithms, as incorporating the underlying mathematical methods can impair the solvers’ performance drastically. In this regard, we extend a semi-implicit, pressure Poisson-based FSI scheme for non-Newtonian
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Three-dimensional microstructure generation using generative adversarial neural networks in the context of continuum micromechanics Comput. Methods Appl. Mech. Eng. (IF 6.588) Pub Date : 2022-08-12 Alexander Henkes, Henning Wessels
Multiscale simulations are demanding in terms of computational resources. In the context of continuum micromechanics, the multiscale problem arises from the need of inferring macroscopic material parameters from the microscale. If the underlying microstructure is explicitly given by means of μCT-scans, convolutional neural networks can be used to learn the microstructure–property mapping, which is
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A multi-scale based fracture characterization in concrete under fatigue loading using critical energy dissipation Int. J. Fatigue (IF 5.489) Pub Date : 2022-08-12 Bineet Kumar, Sonalisa Ray
In this study, analytical formulations for energy dissipation rate and critical energy dissipation have been derived for concrete under cyclic loading conditions. Initially, the formulation for micro-crack growth rate has been derived adopting nano-mechanistic approach, which subsequently has been extended to express the critical energy dissipation. In order to eliminate the scale effect encountered
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AN EFFICIENT TIME-DOMAIN FATIGUE ANALYSIS AND ITS COMPARISON TO SPECTRAL FATIGUE ASSESSMENT FOR CONSTRUCTION STEEL 10HNAP Int. J. Fatigue (IF 5.489) Pub Date : 2022-08-12 Camilla Ronchei, Sabrina Vantadori, Zbigniew Marciniak, Andrea Zanichelli, Daniela Scorza
In the present paper, the capability of two multiaxial fatigue criteria in both estimating the fatigue life and predicting the crack initiation path of metallic components under random loading is investigated. As a matter of fact, it is very difficult to find in the literature the predicted crack initiation path data when the loading has a random nature. To such an aim, an experimental campaign performed
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Topologically optimized lattice structures with superior fatigue performance Int. J. Fatigue (IF 5.489) Pub Date : 2022-08-08 Lei Yang, Yang Li, Yun Chen, Chunze Yan, Bing Liu, Yusheng Shi
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Learning hyperelastic anisotropy from data via a tensor basis neural network J. Mech. Phys. Solids (IF 5.582) Pub Date : 2022-08-11 J.N. Fuhg, N. Bouklas, R.E. Jones
Anisotropy in the mechanical response of materials with microstructure is common and yet is difficult to assess and model. To construct accurate response models given only stress–strain data, we employ classical representation theory, novel neural network layers, and L1 regularization. The proposed tensor-basis neural network can discover both the type and orientation of the anisotropy and provide
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A predicting model for three-dimensional crack growth in power-law creeping solids J. Mech. Phys. Solids (IF 5.582) Pub Date : 2022-08-11 Pengfei Cui, Wanlin Guo
Creep fracture mechanics has been extensively studied in the past half a century, but the gap between the creep crack-tip asymptotic field and crack growth prediction has not been effectively bridged so far, hindering the development of high temperature damage tolerance design. Here a predicting model is developed for three-dimensional crack growth in power-law creeping solids with the C(t)PC-Tz asymptotic
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Formation of surface wrinkles and creases in constrained dielectric elastomers subject to electromechanical loading J. Mech. Phys. Solids (IF 5.582) Pub Date : 2022-08-06 Chad M. Landis, Rui Huang, John W. Hutchinson
This paper investigates issues that have arisen in experimental and theoretical studies of the stability of a dielectric elastomeric layer bonded to a stiff substrate and subject to a voltage difference across the top and bottom conducting surfaces of the layer. The role of equi-biaxial pre-stretch of the layer prior to bonding to the substrate is a central factor in the investigation. The focus is
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A non-intrusive iterative generalized finite element method for multiscale coupling of 3-D solid and shell models Comput. Methods Appl. Mech. Eng. (IF 6.588) Pub Date : 2022-08-11 H. Li, J. Avecillas-Leon, N. Shauer, C.A. Duarte
Fully 3-D models can be prohibitively expensive when dealing with industrial-scale problems while plate and shell models are not able to capture localized 3-D effects around cracks, welds, and other structural features. This paper presents an iterative multiscale Generalized Finite Element Method (GFEM) able to automatically couple 3-D solid and shell models and capture interactions among structural
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mCRE-based parameter identification from full-field measurements: Consistent framework, integrated version, and extension to nonlinear material behaviors Comput. Methods Appl. Mech. Eng. (IF 6.588) Pub Date : 2022-08-11 Hai Nam Nguyen, Ludovic Chamoin, Cuong Ha Minh
In this paper, we address the effective and robust identification of material behavior parameters from full-field measurements obtained by means of the advanced Digital Image Correlation (DIC) experimental technique. The objective is to optimize the identification procedure by defining an appropriate and flexible numerical methodology that automatically incorporates the limited knowledge on both the
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Fast simulation of particulate suspensions enabled by graph neural network Comput. Methods Appl. Mech. Eng. (IF 6.588) Pub Date : 2022-08-10 Zhan Ma, Zisheng Ye, Wenxiao Pan
Predicting the dynamic behaviors of particles in suspension subject to hydrodynamic interaction (HI) and external drive can be critical for many applications. By harvesting advanced deep learning techniques, the present work introduces a new framework, hydrodynamic interaction graph neural network (HIGNN), for inferring and predicting the particles’ dynamics in Stokes suspensions. It overcomes the
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A cycle-jump acceleration method for the crystal plasticity simulation of high cycle fatigue of the metallic microstructure Int. J. Fatigue (IF 5.489) Pub Date : 2022-08-11 Jiahao Cheng, Xiaohua Hu, Michael Kirka
For metallic materials, high-cycle fatigue life is sensitive to underlying microstructure features including secondary phases, textures, grains morphology, etc. The traditional, data-based safe-life approaches for modeling fatigue don’t explicitly consider the microstructure and can’t guide study in microstructure modification for improved fatigue property. Crystal plasticity-based simulation provides
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Dimensionless impedance method for the transient response of pressurized pipeline system Eng. Appl. Comput. Fluid Mech. (IF 6.519) Pub Date : 2022-08-10 Sang Hyun Kim
Modeling an unsteady flow is an important problem in pressurized pipeline systems. Depending on the dimensions and properties of the fluid and pipeline material, the generation of hydraulic transient issues and their spatiotemporal variation patterns can be different. To address the water hammer problem without scale issues in pipeline systems, this study developed a dimensionless impedance method
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Crystal plasticity modeling of low-cycle fatigue behavior of an Mg-3Al-1Zn alloy based on a model, including twinning and detwinning mechanisms J. Mech. Phys. Solids (IF 5.582) Pub Date : 2022-08-09 Xiaoqian Guo, Yao Cheng, Yunchang Xin, Wei Wu, Chao Ma, Ke An, Peter K. Liaw, Peidong Wu, Qing Liu
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3D CP-XFEM modelling of short crack propagation interacting with twist/tilt nickel grain boundaries J. Mech. Phys. Solids (IF 5.582) Pub Date : 2022-08-09 Xiaoxian Zhang, Fionn P.E. Dunne
Short fatigue crack growth across grain boundaries of differing tilt and twist combinations has been investigated in three dimensions using coupled crystal plasticity and extended finite element methods. Crack path selection and growth rate are mechanistically determined by considering crystallographic planes containing the highest shear strain and the achievement of a critical stored energy density
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Towards validation of crack nucleation criteria from V-notches in quasi-brittle metallic alloys: Energetics or strength? Comput. Methods Appl. Mech. Eng. (IF 6.588) Pub Date : 2022-08-09 Tianchen Hu, John E. Dolbow, Zohar Yosibash
We discuss crack nucleation observations from a series of experiments that have proven to be particularly challenging for model validation. In particular, we focus attention on crack nucleation from a series of V-notched specimens of an AISI 4340 steel alloy subjected to four-point bending. Details of the specimen geometry, loading, and experimentally-measured forces are provided for V-notches with
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Data-driven finite element computation of open-cell foam structures Comput. Methods Appl. Mech. Eng. (IF 6.588) Pub Date : 2022-08-09 Tim Fabian Korzeniowski, Kerstin Weinberg
This paper presents a model-free data-driven strategy for linear and non-linear finite element computations of open-cell foam. Employing sets of material data, the data-driven problem is formulated as the minimization of a distance function subjected to the physical constraints from the kinematics and the balance laws of the mechanical problem. The material data sets of the foam are deduced here from
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Fatigue tests and a damage mechanics-based fatigue model on a cast Al-Si-Mg aluminum alloy with scratches Int. J. Fatigue (IF 5.489) Pub Date : 2022-08-09 Susong Yang, Weiping Hu, Zhixin Zhan, Jian Li, Chunyu Bai, Qiang Yang, Qingchun Meng
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Evaluation of in situ hot-rolling forming effect on plastic zone of wire + arc additively manufactured 5087 alloys using digital image correlation technique Int. J. Fatigue (IF 5.489) Pub Date : 2022-08-09 Zhen Liao, Bing Yang, M. Neil James, Jian Li, Shoune Xiao, Shengchuan Wu
The fatigue crack growth (FCG) rates and crack-tip plastic zone size data for wire + arc additive manufacturing (WAAM)-processed 5087 alloys before and after in situ hot-rolling treatment were investigated and compared. After hot-rolling, the WAAM-processed alloys possessed higher strength. During the FCG tests, the crack-tip field was monitored using a digital image correlation (DIC) technique. The
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Residual fatigue life prediction of natural rubber components under variable amplitude loads Int. J. Fatigue (IF 5.489) Pub Date : 2022-08-09 Xiangnan Liu, Wen-Bin Shangguan, Xuezhi Zhao
In the present study, the residual fatigue life (RFL) of natural rubber (NR) components under variable amplitude loads is predicted. To this end, a support vector machine (SVM) model is established to estimate the fatigue life of NR specimens under a constant amplitude load. Here, the strain amplitude and strain mean of NR specimens are used as input variables while the rubber fatigue life is considered
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Gaussian Process Flow and physical model fusion driven fatigue evaluation model using Kalman Filter Int. J. Fatigue (IF 5.489) Pub Date : 2022-08-04 Tianyou Liang, Aijun Yin, Mengchun Pan, Dixiang Chen
The change of residual stress is complex in the fatigue cycle. The method of evaluating the fatigue state through physical models couldn’t express the possibility of residual stress evolution. The data-driven model doesn’t conform to the physical evolution law in detail and the most model need large-scale data. In this paper, a probabilistic model based on physical model and Gaussian Process Flow is
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Influence of pre-straining on the low-cycle fatigue performance of Fe–0.1C–5Mn medium manganese steel Int. J. Fatigue (IF 5.489) Pub Date : 2022-08-04 Mei Zhang, Weijun Wang, Bendao Zhang, Qiongying Cen, Jin Liu
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A multi-scale framework to predict damage initiation at martensite/ferrite interface J. Mech. Phys. Solids (IF 5.582) Pub Date : 2022-08-08 L. Liu, F. Maresca, J.P.M. Hoefnagels, M.G.D. Geers, V.G. Kouznetsova
Martensite/ferrite (M/F) interface damage largely controls failure of dual-phase (DP) steels. In order to predict the failure and assess the ductility of DP steels, accurate models for the M/F interfacial zones are needed. Several M/F interface models have been proposed in the literature, which however do not incorporate the underlying microphysics. It has been recently suggested that (lath) martensite
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An implicit Cartesian cut-cell method for incompressible viscous flows with complex geometries Comput. Methods Appl. Mech. Eng. (IF 6.588) Pub Date : 2022-08-07 Zhihua Xie
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Concurrent optimization of topological configuration and continuous fiber path for composite structures — A unified level set approach Comput. Methods Appl. Mech. Eng. (IF 6.588) Pub Date : 2022-08-06 Yanan Xu, Yunkai Gao, Chi Wu, Jianguang Fang, Guangyong Sun, Grant P. Steven, Qing Li
This study proposes a novel topology optimization approach for design of continuous steering fiber path for composite structures using a level set method. The radial basis function (RBF) is employed to construct the level set function (LSF). Fiber orientations are parameterized by LSF and fiber paths can be determined instinctively for the inherent advantages of the level set approach. Besides, the
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Study of ventilation and virus propagation in an urban bus induced by the HVAC and by opening of windows Comput. Methods Appl. Mech. Eng. (IF 6.588) Pub Date : 2022-08-06 Santiago F. Corzo, Damian E. Ramajo, Sergio R. Idelsohn
The external and internal airflow and air renewal inside urban buses have taken especial relevance since the COVID-2 pandemic. Computational fluid dynamics (CFD) simulations, which focus on the estimation of indoor airflow are not conclusive about the impact of using Heat, Ventilation and Air Conditioning (HVAC) systems on diseases’ transmission risk while travelling with open windows has shown to
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Domain decomposition methods for 3D crack propagation problems using XFEM Comput. Methods Appl. Mech. Eng. (IF 6.588) Pub Date : 2022-08-04 Serafeim Bakalakos, Manolis Georgioudakis, Manolis Papadrakakis
The extended finite element method (XFEM) has been successfully implemented in solving crack propagation problems by enriching the polynomial basis functions of standard finite elements with specialized non-smooth functions. The resulting approximation space can be used to solve problems with moving discontinuities, such as cracks, without the need of remeshing in the vicinity of the crack. The enrichment
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On tracking arbitrary crack path with complex variable meshless methods Comput. Methods Appl. Mech. Eng. (IF 6.588) Pub Date : 2022-08-04 D.M. Li, Jia-Hui Liu, Feng-Hua Nie, Carol A. Featherston, Zhangming Wu
This study presents a numerical modelling framework based on complex variable meshless methods, which can accurately and efficiently track arbitrary crack paths in two-dimensional linear elastic solids. The key novelty of this work is that the proposed meshless modelling scheme enables a direct element-free approximation for the solutions of linear elastic fracture mechanics problems. The complex variable
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Strength-based concurrent shape and fiber path optimization of continuous fiber composites Comput. Methods Appl. Mech. Eng. (IF 6.588) Pub Date : 2022-08-04 Zhelong He, Mehran Tehrani, Ali Y. Tamijani
This paper introduces a novel strength-based structural optimization technique capable of concurrent design of shape and fiber path in continuous fiber-reinforced composites. To this end, a higher order function, i.e., the level-set function, is employed to update both shape and fiber placement. The shape evolution relies on a shape sensitivity analysis based on the Tsai–Wu failure criterion. The fiber
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Optimal sparse polynomial chaos expansion for arbitrary probability distribution and its application on global sensitivity analysis Comput. Methods Appl. Mech. Eng. (IF 6.588) Pub Date : 2022-08-05 Lixiong Cao, Jie Liu, Chao Jiang, Guangzhao Liu
Polynomial chaos expansion has received considerable attention in uncertainty quantification since its great modeling capability for complex systems. However, considering the different variable distribution types and the ‘curse of dimensionality’ of the expansion coefficients, the polynomial chaos expansion has some limitations in the practical engineering application. In this paper, an optimal sparse
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Phase field modeling of brittle fracture in large-deformation solid shells with the efficient quasi-Newton solution and global–local approach Comput. Methods Appl. Mech. Eng. (IF 6.588) Pub Date : 2022-08-04 Z. Liu, J. Reinoso, M. Paggi
To efficiently predict the crack propagation in thin-walled structures, a global–local approach for phase field modeling using large-deformation solid shell finite elements considering the enhanced assumed strain (EAS) and the assumed natural strain (ANS) methods for the alleviation of locking effects is developed in this work. Aiming at tackling the poor convergence performance of standard Newton
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A novel isogeometric layerwise element for piezoelectric analysis of laminated plates with straight/curvilinear fibers Comput. Methods Appl. Mech. Eng. (IF 6.588) Pub Date : 2022-08-05 K.A. Hasim, A. Kefal
This study presents an isogeometric layerwise element, L-IGA based on the principle of virtual displacement theory to model the bending behavior of laminated smart composite plates integrated with piezoelectric layers. Instead of using Lagrangian or Hermitian type polynomials encountered in standard finite element technology, L-IGA utilizes high-order Non-Uniform Rational B-Splines (NURBS) functions
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Multiscale design of nonlinear materials using reduced-order modeling Comput. Methods Appl. Mech. Eng. (IF 6.588) Pub Date : 2022-08-05 David R. Brandyberry, Xiang Zhang, Philippe H. Geubelle
A two-step optimization method is proposed for the efficient multiscale design of heterogeneous materials whose nonlinear macroscopic response is driven by volumetric and interfacial damage taking place at the microstructural level. The Eigendeformation-based reduced-order Homogenization Method (EHM) is used in a reduced-order design phase, allowing for a preliminary design that combines multiple initial
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Bayesian inference using Gaussian process surrogates in cancer modeling Comput. Methods Appl. Mech. Eng. (IF 6.588) Pub Date : 2022-08-05 Heber L. Rocha, João Vitor de O. Silva, Renato S. Silva, Ernesto A.B.F. Lima, Regina C. Almeida
Parametric multiscale tumor models have been used nowadays as tools to understand and predict the behavior of tumor onset, development, and decrease under treatments. In order to obtain a useful model, its parameters have to be accurately estimated, often requiring numerous model evaluations. This can be computationally prohibitive for complex problems. In this work, we propose an approximate Bayesian
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High-order accurate entropy stable adaptive moving mesh finite difference schemes for (multi-component) compressible Euler equations with the stiffened equation of state Comput. Methods Appl. Mech. Eng. (IF 6.588) Pub Date : 2022-08-06 Shangting Li, Junming Duan, Huazhong Tang
This paper extends the high-order entropy stable (ES) adaptive moving mesh finite difference schemes developed in Duan and Tang (2022) to the two- and three-dimensional (multi-component) compressible Euler equations with the stiffened equation of state (EOS). The two-point entropy conservative (EC) flux is first constructed in the curvilinear coordinates, which is nontrivial in the case of the stiffened
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Three-field floating projection topology optimization of continuum structures Comput. Methods Appl. Mech. Eng. (IF 6.588) Pub Date : 2022-08-06 Xiaodong Huang, Weibai Li
Topology optimization using the variable substitution among three fields can achieve a design with desired solid and/or void features. This paper proposes a three-field floating projection topology optimization (FPTO) method using the linear material interpolation. The implicit floating projection constraint is used as an engine for generating a 0/1 solution at the design field. The substitution filtering
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Effective linear wave motion in periodic origami structures Comput. Methods Appl. Mech. Eng. (IF 6.588) Pub Date : 2022-08-05 Othman Oudghiri-Idrissi, Bojan B. Guzina
We establish a dynamic homogenization framework catering for the linear elastic wave motion in periodic origami structures. The latter are modeled via “bar-and-hinge” paradigm where: (i) the folding of the structure and the bending of individual panels are modeled via elastic hinges, and (ii) the in-plane deformation of each panel is modeled with elastic bars. Using the so-formulated discrete model
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De-homogenization of optimal 2D topologies for multiple loading cases Comput. Methods Appl. Mech. Eng. (IF 6.588) Pub Date : 2022-08-06 Peter Dørffler Ladegaard Jensen, Ole Sigmund, Jeroen P. Groen
This work presents an extension of the highly efficient de-homogenization method for obtaining high-resolution, near-optimal 2D topologies optimized for minimum compliance subjected to multiple load cases. We perform a homogenization-based topology optimization based on stiffness optimal Rank-N microstructure parameterizations to obtain stiffness optimal multi-scale designs on relatively coarse grids
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Computational modeling of capillary perfusion and gas exchange in alveolar tissue Comput. Methods Appl. Mech. Eng. (IF 6.588) Pub Date : 2022-08-06 Pablo Zurita, Daniel E. Hurtado
Gas exchange is an essential function of the respiratory system that couples fundamentally with perfusion in respiratory alveoli. Current mathematical formulations and computational models of these two phenomena rely on one-dimensional approximations that neglect the intricate volumetric microstructure of alveolar structures. In this work, we introduce a coupled three-dimensional computational model
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Introducing the concept of defect tolerance by fatigue spectral methods based on full-field frequency response function testing and dynamic excitation signature Int. J. Fatigue (IF 5.489) Pub Date : 2022-08-06 Alessandro Zanarini
The complete elimination of flaws in complex parts raises the overall costs, especially under stringent safety or service targets, while advanced knowledge might grade the risk of running defected parts with savings. Introducing the novel concept of defect tolerance, this work proposes to exploit experiment-based full-field measurements from optical techniques, in conjunction with fatigue spectral
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Deterioration of performances and structures of cement pastes under the action of thermal cycling fatigue Int. J. Fatigue (IF 5.489) Pub Date : 2022-08-02 Haoyu Zeng, Wenwei Li, Ming Jin, Jian Zhang, Yuefeng Ma, Chao Lu, Jiaping Liu
Concrete structures in the atmosphere are continuously subjected to thermal cycle (TC) induced by varying environmental temperature. However, the influencing mechanism of thermal cycling fatigue on the mechanical properties and microstructure of cement-based materials has not been thoroughly documented. To address this issue, the relationship between the macro-properties and microstructure of cement
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The dynamic load-bearing performance of the laser cladding Fe-based alloy on the U75V rail Int. J. Fatigue (IF 5.489) Pub Date : 2022-08-02 Jiaoxi Yang, Wenyu Ma, Wentao Zhang, Xiaojian Wang, Kai Huang, Zhe Liu, Zheng Zhou, Hongchao Xu, Junheng Xiao
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Effect of hygrothermal environment on the fatigue fracture mechanism of single lap Aluminum-CFRP hybrid (riveted/bonded) joints Int. J. Fatigue (IF 5.489) Pub Date : 2022-08-01 Hanyu Zhang, Zhouzhou Song, Lei Zhang, Zhao Liu, Ping Zhu
Due to being composed of different materials, Aluminum-CFRP hybrid (riveted/bonded) joints (HJs) exhibit different fatigue failure modes under different loading and environmental conditions. This paper investigates the influence of hygrothermal environment on the fatigue fracture mechanism of HJs through experimental and simulation researches. Experiments demonstrate the multi-stage character of HJs’
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Gradient-enhanced modelling of deformation-induced anisotropic damage in metallic glasses J. Mech. Phys. Solids (IF 5.582) Pub Date : 2022-08-05 Jianye Shi, Songyun Ma, James P. Best, Moritz Stolpe, Shuai Wei, Peilei Zhang, Bernd Markert
Recent experimental and computational studies at different scales reveal an apparent flow-induced anisotropy of the inelastic deformation behaviour in metallic glasses (MGs). However, the anisotropic damage behaviour accompanied by the formation of shear bands is not adequately described in the previous constitutive modelling work. In this study, we develop a thermodynamically-consistent, anisotropic
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Experimental study on mechanical properties and low-cycle fatigue behaviour of stainless steels subjected to salt spray and dry/wet cycle Int. J. Fatigue (IF 5.489) Pub Date : 2022-08-05 Hengyao Dang, Anrui Liang, Ran Feng, Jingzhou Zhang, Xin Yu, Yongbo Shao
This paper presents experimental studies on the mechanical properties and low-cycle fatigue behaviour of corroded austenitic stainless steel (3 0 4) and ferritic stainless steel (4 3 0). Tensile and low-cycle fatigue tests are conducted on 28 specimens. The corrosion process of the specimens is finished by using salt spray and dry/wet cycle tests. In the tensile tests, the key parameters of the constitutive
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Benchmark of a probabilistic fatigue software based on machined and as-built components manufactured in AlSi10Mg by L-PBF Int. J. Fatigue (IF 5.489) Pub Date : 2022-08-05 F. Sausto, S. Romano, L. Patriarca, S. Miccoli, S. Beretta
The possibility to obtain optimized components with a reduced weight is the main driver of space and aeronautic industries in seriously considering the metal additive manufacturing (AM) technology for production. Despite the incontrovertible advantages offered by this manufacturing technique, the material produced is usually affected by the presence of internal defects, a poor surface quality, and
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Influence of various heat treatments on fatigue crack growth in 42CrMo4 steel under mixed modes I+II and I+III Int. J. Fatigue (IF 5.489) Pub Date : 2022-08-04 Monika Duda, Dariusz Rozumek, Michał Smolnicki, Anna Wybraniec
T article addresses the results of the study of the examination of fatigue fracture in mixed and I+II and I+III modes in heat treated steel 42CrMo4. Three types of thermal treatments were performed, each caused various mechanical properties of the material. Tests were performed on two sample types: compact tension specimen (CTS) and rectangular cross-sectional samples for mixed mode and I+III. Mixed
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Weight functions for stress intensity factor and T-stress derived for an inclined edge crack in a finite width plate Int. J. Fatigue (IF 5.489) Pub Date : 2022-08-04 Davide Leonetti, Sabrina Vantadori
The present paper discusses the formulation of weight functions for inclined edge cracks in finite width plates, typical of Rolling Contact Fatigue defects, to obtain the Stress Intensity Factor and the T-stress. Because the weight functions do not depend on the load and boundary conditions, their use is convenient to study cracks subjected to complex stress fields, e.g. fretting fatigue and rolling
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Comparison of compressive fatigue performance of cementitious composites with different types of carbon nanotube Int. J. Fatigue (IF 5.489) Pub Date : 2022-08-01 Linwei Li, Xinyue Wang, Hongjian Du, Baoguo Han
The compressive fatigue performance of cementitious composites largely depends on the generation and connection of fatigue nano/micro-cracks in the composites. These types of cracks are beyond the scope that traditional fibers can restrain, but can be effectively eliminated and inhibited by incorporating nano-materials, especially those with fiber shape, such as carbon nanotube (CNT). Unfortunately
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Optimization of tricuspid membrane mechanism for effectiveness and leaflet longevity through hemodynamic analysis Eng. Appl. Comput. Fluid Mech. (IF 6.519) Pub Date : 2022-08-04 Young Woo Kim, Hyeong Jun Lee, Su-Jin Jung, June-Hong Kim, Joon Sang Lee
A procedure for the treatment of tricuspid regurgitation through membrane insertion has been developed recently. However, membrane optimization is required to balance treatment effectiveness with valve damage. This optimization must be performed based on hemodynamic analyses, using the computational fluid dynamics method. The objectives of this study were to analyze hemodynamic features and provide
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Comparison of haemodynamics in carotid endarterectomy: primary closure versus patch angioplasty Eng. Appl. Comput. Fluid Mech. (IF 6.519) Pub Date : 2022-08-04 Hyunwoo Jung, Taehak Kang, Chul-Hyung Lee, Shin-Young Woo, Shin-Seok Yang MD, Debanjan Mukherjee PhD, Dong-Ik Kim MD PhD, Jaiyoung Ryu PhD
We investigated differences in haemodynamic forces between carotid arteries that underwent primary closure (PC) or patch angioplasty (PA) using computational fluid dynamics (CFD). A total of 30 subjects were enrolled in this study, consisting of 10 subjects who underwent PC, 10 who underwent PA and 10 healthy subjects. Three-dimensional models of carotid arteries were reconstructed using patient-specific