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Shack–Hartmann wavefront sensing: A new approach to time-resolved measurement of the stress intensity factor during dynamic fracture Mech. Mater. (IF 3.9) Pub Date : 2024-04-12 Liuchi Li, Velat Kilic, Milad Alemohammad, Lei Yang, K.T. Ramesh, Mark A. Foster, Todd C. Hufnagel
The stress intensity factor describes the stress state around a crack tip in a solid material and is important for understanding crack initiation and propagation. Because stresses cannot be measured directly, the characterization of the stress intensity factor relies on the measurement of deformation around a crack tip. Such measurements are challenging for dynamic fracture of brittle materials where
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A constitutive model of dual-component shape memory hybrids considering isothermal crystallization and debonding damage Mech. Mater. (IF 3.9) Pub Date : 2024-04-12 Chao Yin, Taoxi Wang, Wei Min Huang, Leipeng Song, Deng Liu, Zhongkai Xi, Jian Fu, Xing Shen
The concept of shape memory hybrids (SMHs) has been proposed in recent years as a new kind of shape memory materials. By carefully selecting the actual composition of SMHs, some special features could be realized to meet the requirements of particular engineering applications. However, in terms of simulation, conventional constitutive models for shape memory polymers (SMPs) struggle to precisely characterize
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Multiscale finite element analysis of layer interface effects on cracking in semi-flexible pavements at different temperatures Mech. Mater. (IF 3.9) Pub Date : 2024-04-09 Xing Cai, Prabin Kumar Ashish, Pai Zheng, Zhen Leng, Minghui Gong, Jun Yang
This paper presents comprehensive research work on the crack initiation behavior of Semi Flexible Pavements (SFP) with the help of a one-way coupled multiscale modelling approach. The study focuses on elucidating the influence of layer interface conditions on potential cracking patterns under different temperature conditions. By integrating material properties at both local (mixture) and global (pavement)
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An FFT based adaptive grid framework to represent non-singular dislocations Mech. Mater. (IF 3.9) Pub Date : 2024-04-09 Rodrigo Santos-Güemes, Gonzalo Álvarez, Javier Segurado
Non-singular theories aim at regularizing the unrealistic stress singularity around a dislocation line predicted by elasticity by spreading the Burgers vector around the core. The use of these approaches in discrete dislocation models or field dislocation mechanics requires very fine discretization around the dislocation lines. FFT solvers commonly used in these problems rely on a regular grid which
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In-plane elastic waves in piezoelectric metamaterials with Parity–Time symmetry Mech. Mater. (IF 3.9) Pub Date : 2024-04-07 Peng-Hui Li, Zi-Hao Miao, Yi-Ze Wang
The propagation of in-plane waves in piezoelectric metamaterials involves the coupling of longitudinal (i.e. quasi–pressure), transverse (i.e. quasi–shear) and electric potential waves, which can result in different exotic phenomena. In this study, the stiffness matrix method is used to analyze the dispersion relation, which contains anomalous propagation characteristics. With the coupling of electric
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Microstructure characterization and dynamic recrystallization behavior of Ni–Cu alloy during hot deformation Mech. Mater. (IF 3.9) Pub Date : 2024-04-07 A. Momeni, G.R. Ebrahimi, M. Jahazi, H.R. Ezatpour
Flow curve and microstructure of Ni–30Cu alloy were studied after hot compression at 1150 °C and strain rate of 0.01 s. The stress-strain and work hardening rate curves showed a weak peak at strain of 0.32, followed by a slight dynamic softening. The dominant microstructural mechanisms in low (0.1–0.23) and medium strains (0.23–0.32) were dynamic recovery and dynamic recrystallization, respectively
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On the role of higher-order condition of strain gradient plasticity in the cyclic torsion of thin metallic wires: Experiments and modeling Mech. Mater. (IF 3.9) Pub Date : 2024-04-06 Yuyang Xie, Jian Lei, Jiongjiong Hu, Tong Luo, Chaoxiang Ma, Dabiao Liu, Yuming He
Cyclic torsion tests are performed on micron-scale copper wires with and without surface passivation to study the role of the higher-order condition in the plastic behavior of thin wires under non-proportional loading. A typical strengthening size effect is observed in the symmetric cycles. More obvious strength enhancement exists in the torsional response of passivated copper wires. An unusual Bauschinger
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Traction–separation law for bridged cracks at immiscible polymers interface Mech. Mater. (IF 3.9) Pub Date : 2024-04-04 M. Perelmuter
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Creep-recovery deformation of 304 stainless-steel springs under low forces Mech. Mater. (IF 3.9) Pub Date : 2024-04-04 Ming-Yen Tsai, Shou-Yi Chang, Yulin Zhang, Fuqian Yang, Sanboh Lee
The deformation behavior of materials at high temperatures determines the structural stability of mechanical structures under high-temperature service conditions. In this work, we prepare helical springs from 304 stainless-steel wires and study creep-recovery deformation of the helical springs under small forces at temperatures of 475–575 °C. In contrast to most methods reported in the literature,
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Mechanics of membrane targeting antimicrobials - Pore nucleation in bacterial membranes Mech. Mater. (IF 3.9) Pub Date : 2024-04-04 Guijin Zou, Wooseong Kim, Huajian Gao
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Interface temperature evolution and bonding characteristics analysis induced by microparticle impact Mech. Mater. (IF 3.9) Pub Date : 2024-04-04 Wei Wang, Shufan Wu, Zhongcheng Mu, Jiyuan Yi, Zhicong Wang
The energy conversion and heat production resulting from plastic deformation induced by microparticle impact affects a change in interface temperature, which varies with the initial state of the microparticle. Due to the instantaneous and microscopic characteristics of microparticle impact process, interface temperature has not been fully studied. Thus, evolution theory of the impact interface temperature
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Macroscopic elasticity of the hat aperiodic tiling Mech. Mater. (IF 3.9) Pub Date : 2024-04-03 Romain Rieger, Alexandre Danescu
In this paper, we explore the macroscopic elastic behavior of the aperiodic but hyperuniform (single tile) tiling, as recently reported in Smith et al. (2023a, 2023b). The first step involves assigning mechanical properties to the geometric pattern. The simplest approach includes near-neighbor type (NN) interactions (springs) along the edges of the geometric pattern. To eliminate zero modes, we also
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Failure mechanisms at the Li anode/solid electrolyte interface during Li stripping Mech. Mater. (IF 3.9) Pub Date : 2024-04-02 S.S. Shishvan, N.A. Fleck, R.M. McMeeking, V.S. Deshpande
A precipitous increase in the resistance of the Li metal/solid electrolyte interface can occur during the stripping of Li from the electrode. This electrical failure has been typically attributed to the loss of contact associated with the growth of voids in the Li anode at the electrode/electrolyte interface. We first analyse the growth of voids at the electrode/electrolyte interface using a framework
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Thermomechanical response and elastocaloric effect of shape memory alloy wires Mech. Mater. (IF 3.9) Pub Date : 2024-03-26 Longhuan Tian, Jianyou Zhou, Pan Jia, Zheng Zhong
Refrigeration technologies based on the elastocaloric effect of shape memory alloys (SMAs) have attracted much interest in recent years. To seek for schemes that can improve the temperature span and efficiency of elastocaloric devices, this work explores more practical loading conditions (between adiabatic and isothermal) of SMAs. To account for the smoothness of the martensite phase transformation
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Interstitial fluid transport in cortical bone porosities: Effects of blood pressure and mass exchange using porous media theory Mech. Mater. (IF 3.9) Pub Date : 2024-03-26 Kasra Soleimani, Ahmad Ghasemloonia, Les Jozef Sudak
This research focuses on the importance of understanding bone adaptation for gaining insights into diseases such as osteoporosis. The study investigates the role of fluid flow in cortical bone adaptation, with a specific focus on the network of osteocyte canaliculi and the chemical reactions involved in bone resorption. Prior studies have implemented methods such as poroelasticity theory and dual porosity
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The effect of silica nanoparticles on the shock adiabatic relation and tensile strength in polyurethane Mech. Mater. (IF 3.9) Pub Date : 2024-03-24 Zhi-Qiang Hu, Jian-Li Shao, Peng-Wan Chen
This work exploded the effect of silica nanoparticles on shock adiabatic relation and tensile fracture in polyurethane based on atomistic simulations. It is found that the non-uniform interface structures introduced by nanoparticles can increase the shock impedance, which also leading to increased twisting of polyurethane chains and the generation of local hotspots near the nanoparticles. The interface
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Molecular insights into reversible and irreversible kinks formed in nanocellulose Mech. Mater. (IF 3.9) Pub Date : 2024-03-23 RongZhuang Song, YuanZhen Hou, ZeZhou He, HengAn Wu, YinBo Zhu
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The interfacial behavior of an axisymmetric film bonded to a graded inhomogeneous substrate Mech. Mater. (IF 3.9) Pub Date : 2024-03-22 Dengke Li, Peijian Chen, Hao Liu, Zhilong Peng, Mehmet Ali Guler, Shaohua Chen
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Effect of damage evolution on the auxetic behavior of 2D and 3D re-entrant type geometries Mech. Mater. (IF 3.9) Pub Date : 2024-03-20 Chetna Srivastava, Vinyas Mahesh, P.J. Guruprasad, Nik Petrinic, Fabrizio Scarpa, Dineshkumar Harursampath, Sathiskumar A. Ponnusami
In this work, a mathematical formulation based on variational asymptotic method (VAM) has been proposed to determine the effect of damage on the auxetic properties of two-dimensional (2D) and three-dimensional (3D) re-entrant geometries. The influence of damage progression on the auxetic behavior was captured using a geometrically exact one-dimensional beam theory and an isotropic damage law, implemented
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Three-dimensional elastic properties of open-cell porous structures: Analytic and finite element modelling Mech. Mater. (IF 3.9) Pub Date : 2024-03-20 Róbert K. Németh, Éva I. Lakatos
The current paper introduces a three-dimensional micromechanical model of open-cell cellular solid materials and presents the homogenization of the model to an orthotropic continuum. An orthotropic microstructural beam model was created and tested under pure stretch and pure angular distortion to identify the dominant deformation modes by mapping the contributions of normal-, bending- and torsional
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Ductile rupture under cyclic loadings at high triaxiality: The influence of strain hardening and elasticity Mech. Mater. (IF 3.9) Pub Date : 2024-03-18 Almahdi Remmal, Jean-Baptiste Leblond
Previous works (Devaux et al., 1997; Cheng et al., 2017) have emphasized the effects of strain hardening and elasticity upon ductile rupture of metals under cyclic loading conditions. This work pursues the study and modelling of these two effects by distinct theoretical methods, each coupled with micromechanical finite element simulations of the behaviour of some “representative cell”. For the effect
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Threshold and structure of HCP/FCC nucleation in BCC iron under arbitrary triaxial compression: Atomistic simulations Mech. Mater. (IF 3.9) Pub Date : 2024-03-16 Xiu-Xia Guo, Dong-Dong Jiang, Jian-Li Shao
Shear deformation is one of the primary factors determining the threshold of structural transition (ST). It is important to quantitatively express the relationship between shear deformation and the ST threshold for the in-depth development of ST dynamics models. This work used classical molecular dynamics methods to study the effect of shear deformation on the ST in iron by controlling the triaxial
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Failure analysis of unidirectional FRP with fiber clusters under transverse pure shear Mech. Mater. (IF 3.9) Pub Date : 2024-03-16 Xiaofei Pang, Xun Chen, Shufeng Zhang
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Elastic properties of honeycombs with spline curve cell walls Mech. Mater. (IF 3.9) Pub Date : 2024-03-16 Ruoshui Wang, Taekwang Ha, Jyhwen Wang
In the ideal models, cell walls of honeycomb structures are perfect flat sheets or straight lines (viewed from out-of-plane projection), whereas most of the real honeycomb products contain curved cell walls due to the widely employed manufacturing processes. Moreover, some honeycomb products are made intentionally to have corrugated cell walls for an enhanced out-of-plane stability or an increase of
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DLP printed 3D gyroid structure: Mechanical response at meso and macro scale Mech. Mater. (IF 3.9) Pub Date : 2024-03-16 Edoardo Mancini, Mattia Utzeri, Emanuele Farotti, Attilio Lattanzi, Marco Sasso
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A novel metamaterial with instantaneously sign-switchable coefficient of thermal expansion and Poisson's ratio Mech. Mater. (IF 3.9) Pub Date : 2024-03-15 Hao Wu, Minghui Fu, Mingming Chen, Wen Jiang, Rongchang Zhong, Binbin Zheng, Jingxiang Huang
Most materials expand when heated and contract when cooled. In contrast, negative thermal expansion materials exhibit the opposite behavior. In this paper, we present a metamaterial that expands both when heated and cooled. The unit cell configuration is crafted by embedding two isosceles triangular structures composed of high thermal expansion materials within a re-entrant hexagonal honeycomb framework
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Anisotropic evolution of viscous strain in soft biological materials Mech. Mater. (IF 3.9) Pub Date : 2024-03-14 Jacopo Ciambella, Giulio Lucci, Paola Nardinocchi
We propose a model for anisotropic viscoelastic biological materials that can handle large deformations, based on the kinematic assumption that the reinforcing fibre structure undergoes affine deformation with the underlying matrix. A generalized orientation tensor approach is used to account for the dispersion of the fibres. Moreover, we consider a strain energy function that features both an elastic
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Shear bands occurrence in collapsing thick-walled cylinders: Role of user-defined perturbations Mech. Mater. (IF 3.9) Pub Date : 2024-03-12 M. Xavier, M. Reynaud
Self-organization of multiple adiabatic shear bands (ASB) is often investigated through collapsing thick-walled cylinders (TWC). In the present work, the material behavior is described by a thermoviscoplastic constitutive law with a strain energy based failure model. Inhomogeneities in the specimen are somehow represented using Voronoi cells. In addition, a user-defined perturbation is imposed in the
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Explicating tensile response of AA6061-T6 sheet post single point incremental forming: Two camera-DIC strain measurement and texture analysis Mech. Mater. (IF 3.9) Pub Date : 2024-03-06 Mohit Sharma, Anirban Bhattacharya, Surajit Kumar Paul
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Multiscale framework for estimation of induced elastic properties of Poly ethylene terephthalate after biaxial elongation Mech. Mater. (IF 3.9) Pub Date : 2024-03-05 Luc Chevalier, Yun-Mei Luo, Thanh Tung Nguyen, Hanane Attar
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A coordinate-free guide to the mechanics of thin shells Mech. Mater. (IF 3.9) Pub Date : 2024-03-05 Giuseppe Tomassetti
In this tutorial, we provide a coordinate-free derivation of the system of equations that govern equilibrium of a thin shell that can undergo shear. This system involves tensorial fields representing the internal force and couple per unit length that adjacent parts of the shell exchange at their common boundary. By an appropriate decomposition of those quantities, we obtain a representation of the
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Preserving non-negative porosity values in a bi-phase elasto-plastic material under Terzaghi’s effective stress principle Mech. Mater. (IF 3.9) Pub Date : 2024-03-01 Giuliano Pretti, William M. Coombs, Charles E. Augarde, Marc Marchena Puigvert, José Antonio Reyna Gutiérrez
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Rate-dependent damage sequence interaction model for predicting the mechanical property of in-service aluminum alloy 6005A-T6 Mech. Mater. (IF 3.9) Pub Date : 2024-02-25 Xiaorui Wang, Tao Zhu, Liantao Lu, Haoxu Ding, Jingke Zhang, Shoune Xiao, Bing Yang, Yanwen Liu
Engineering structures and materials will undergo fatigue, aging, and other degradation behaviors during long-term service under the combined influence of complex boundary conditions. These service damages make the materials and structures no longer meet the initial design requirements and pose a potential risk to the service system. This study proposes a material mesoscopic model to decouple the microstructure
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Effects of primary α grains on rolling reductions and deformation modes in Zr alloys: Experiments and modeling Mech. Mater. (IF 3.9) Pub Date : 2024-02-23 Yucheng Cao, Ding Chen, Liang Xia, Pengfei Feng, Siyuan Wang, Wen Qin
Microstructure and texture evolution of β-quenched Zr-xNb-0.4Mo (x = 0, 0.4, 0.6 and 1.0 wt %) alloys during the cold rolling process were systematically investigated. The Zr-xNb-0.4Mo alloys exhibit the area fractions of the martensitic structure are 33.2%, 69.4%, 100% and 100% with an increase in Nb content. Under the same rolling gap (1.2 mm), the rolling reductions are 24%, 28%, 29.7% and 30%,
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Chirality in topologically interlocked material systems Mech. Mater. (IF 3.9) Pub Date : 2024-02-22 Dong Young Kim, Thomas Siegmund
The present study focuses on the mechanical chirality in plate-type topologically interlocked material systems. Topologically interlocked material (TIM) systems are a class of dense architectured materials for which the mechanical response emerges from the elastic behavior of the building blocks and the contact-frictions interactions between the blocks. The resulting mechanical behavior is strongly
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Dynamic response of aluminum-graphene layered nanocomposites under shock compression and release based on atomistic simulations Mech. Mater. (IF 3.9) Pub Date : 2024-02-21 Ya-Qin Jiang, Yong-Chao Wu, Dong-Dong Jiang, Jian-Li Shao, Yong Mei
To understand the role of aluminum-graphene (Al-Gr) interface, molecular dynamics simulations have been conducted to investigate the dynamic response of Al-Gr layered nanocomposites. The propagation law of shock waves is revealed and the dislocation nucleation at Al-Gr interface may dominate the plastic deformation mechanism at low impact velocities, which results in the propagation of stepped waveforms
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An analytical model of reactive diffusion for transient electronics with thick encapsulation layer Mech. Mater. (IF 3.9) Pub Date : 2024-02-21 Haohui Zhang, Kaiqing Zhang, John A. Rogers, Yonggang Huang
Transient electronic systems are engineered to physically disappear after a predetermined period. Such systems hold significant promise for environmental sustainability and medical applications. The transient behavior relies on the interplay between water diffusion and the hydrolysis reaction of the device components, with the thickness of the encapsulation layer serving as a crucial parameter for
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Geometric effects on impact mitigation in architected auxetic metamaterials Mech. Mater. (IF 3.9) Pub Date : 2024-02-20 T. Gärtner, S.J. van den Boom, J. Weerheijm, L.J. Sluys
Lightweight materials used for impact mitigation must be able to resist impact and absorb the maximum amount of energy from the impactor. Auxetic materials have the potential to achieve high resistance by drawing material into the impact zone and providing higher indentation and shear resistance. However, these materials must be artificially designed, and the large deformation dynamic effects of the
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Modeling of shock wave propagation in porous magnesium based on artificial neural network Mech. Mater. (IF 3.9) Pub Date : 2024-02-18 Fanil T. Latypov, Eugenii V. Fomin, Vasiliy S. Krasnikov, Alexander E. Mayer
Data transfer from the level of atomistic simulations to the level of continuum modeling is one of the urgent problems in the mechanics of materials. In this work, we perform multiple molecular dynamics (MD) simulations of the uniaxial (along different crystallographic directions) and volumetric (isotropic) compression of porous HCP magnesium single crystals in order to study the atomistic processes
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Notes on smooth and singular volumetric growth Mech. Mater. (IF 3.9) Pub Date : 2024-02-16 Vladimir Goldshtein, Reuven Segev
The material structure of bodies undergoing growth is considered. In the geometric framework of a general differential manifold modeling the physical space and a fiber bundle modeling spacetime, body points may be defined for any extensive property for which a smooth flux field exists, even if the property is not conserved. Singular flux fields are considered using the notion of a de Rham current.
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Mechanical properties and deformation mechanisms of single crystal Mg micropillars subjected to high-strain-rate C-axis compression Mech. Mater. (IF 3.9) Pub Date : 2024-02-16 Z. Lin, D.J. Magagnosc, J. Wen, X. Hu, H.D. Espinosa
The mechanical properties and deformation mechanisms of single crystal magnesium under c-axis quasi-static and high-strain rate compressions are investigated through scanning electron microscope (SEM) experiments and post-mortem transmission electron microscope (TEM) characterization. The findings revealed that ductility and high rates of hardening are preserved for pillars as large as 15 μm. Furthermore
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Tailoring electromagnetic interference shielding effectiveness of SiO2-decorated MWCNT/polymer nanocomposites Mech. Mater. (IF 3.9) Pub Date : 2024-02-15 Xiaodong Xia, Yang Liu, Juanjuan Zhang, Jianyang Luo, George J. Weng
While the decorated process has been demonstrated to be a highly efficient method to tailor the electrical conductivity of multi-walled carbon nanotube (MWCNT)-based nanocomposites, the corresponding influences on the agglomeration and electromagnetic interference (EMI) shielding behaviors still remain unknown. In this paper, the decoration-dependent EMI shielding behavior of progressively agglomerated
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The coupled effect of aspect ratio and strut micro-deformation mode on the mechanical properties of lattice structures Mech. Mater. (IF 3.9) Pub Date : 2024-02-12 Stylianos Kechagias, Kabelan J. Karunaseelan, Reece N. Oosterbeek, Jonathan R.T. Jeffers
Lattice structures have been integrated into various industrial applications owing to their unique compressive properties. Mechanical characterisation is usually done by testing a small specimen which is assumed representative of the utilised lattice. A specimen's aspect ratio (height to diameter/width ratio) is known to affect compressive properties in various engineering materials, yet its influence
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Numerical and experimental evaluations on the defect sensitivity of the performance of BCC truss-lattice structures Mech. Mater. (IF 3.9) Pub Date : 2024-02-10 Zhenyang Huang, Xiaofei Cao, Hu Niu, Binlin Ma, Xiao Du, Zhiwei Zhou, Haoming Yang, MingKun Du
Additive manufacturing (AM) routes have brought abundant geometric defects into as-fabricated lattice materials. Researchers take it for granted that any defects in lattice struts would decrease the mechanical properties of lattice structures, which has also been a rule followed by all engineering designers. In this paper, novel design strategies of actively utilizing defects to improve the mechanical
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Adapting U-Net for linear elastic stress estimation in polycrystal Zr microstructures Mech. Mater. (IF 3.9) Pub Date : 2024-02-07 J.D. Langcaster, D.S. Balint, M.R. Wenman
A variant of the U-Net convolutional neural network architecture is proposed to estimate linear elastic compatibility stresses in -Zr (hcp) polycrystalline grain structures. Training data was generated using VGrain software with a regularity of 0.73 and uniform random orientation for the grain structures and ABAQUS to evaluate the stress fields using the finite element method. The initial dataset contains
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An end-to-end explainable graph neural networks-based composition to mechanical properties prediction framework for bulk metallic glasses Mech. Mater. (IF 3.9) Pub Date : 2024-02-06 Tao Long, Zhilin Long, Bo Pang
Accurate prediction of the properties of bulk metallic glasses (BMGs) can provide an important guideline for the design of novel BMGs. While various machine learning (ML) models have been employed to predict the properties of BMGs, feature engineering is typically necessary to choose suitable descriptors based on domain knowledge or experience. In this work, an end-to-end generic framework has been
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Determination of total crack free surface area creation and failure in quasi-brittle microcracking solids using 2D GraFEA simulations Mech. Mater. (IF 3.9) Pub Date : 2024-02-05 C. Lawrence, P. Thamburaja, A. Srinivasa, J.N. Reddy, T.E. Lacy Jr
One of the long-standing problems in continuum damage mechanics is accurate prediction of damage evolution that accounts for the distribution of microstructural features. This is particularly true for microcracking solids, such as concrete, where non-uniformity in the size and spatial distribution of defects can lead to non-uniqueness in the continuum-averaged energy release rate (and free surface
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Bridged structures in ultrathin 2D materials for high toughness. Mech. Mater. (IF 3.9) Pub Date : 2024-02-03 Kamalendu Paul, Chang-Jun Zhang, Chi-Hua Yu, Zhao Qin
2D materials such as graphene, monolayer MoS and MXene are highly functional for their unique mechanical, thermal and electrical features and are considered building blocks for future ultrathin, flexible electronics. However, they can easily fracture from flaws or defects and thus it is important to increase their toughness in applications. Here, inspired by natural layered composites and architected
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On strength and toughness of soft staggered composites Mech. Mater. (IF 3.9) Pub Date : 2024-02-01 Suhib Abu-Qbeitah, Mahmood Jabareen, Konstantin Y. Volokh
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Homogenization of elastic grids containing rigid elements Mech. Mater. (IF 3.9) Pub Date : 2024-02-01 Luca Viviani, Davide Bigoni, Andrea Piccolroaz
The inclusion of rigid elements into elastic composites may lead to superior mechanical properties for the equivalent elastic continuum, such as, for instance, extreme auxeticity. To allow full exploitation of these properties, a tool for the homogenization of two-dimensional elastic grids containing rigid elements is developed and tested on elaborate geometries, such as, for instance, Chinese lattices
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A numerical investigation of slip evolution of shear crack faces oriented arbitrarily under non-steady contact Mech. Mater. (IF 3.9) Pub Date : 2024-01-28 Qingbing Dong, Xingsheng Zhou, Zhuang Chen, Zurong Wu, Qing Luo
Shear loading is induced on the surfaces of a crack that is aligned at an arbitrary angle in relation to the direction of compressive loading. Contact faces may experience relative slip if the tangential stress along the crack surpasses the friction threshold determined by the product of normal stress and coefficient of friction. In contrast, other regions remain in stick contact with a lower level
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Probabilistic modeling of fiber–matrix interface stresses in short-fiber 3D printed composites using effective field methods Mech. Mater. (IF 3.9) Pub Date : 2024-01-28 E. Polyzos, D. Van Hemelrijck, L. Pyl
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On the flat punch hole expansion test of sheet metals: Mechanics of deformation and evaluation of anisotropic plasticity models Mech. Mater. (IF 3.9) Pub Date : 2024-01-26 A. Abedini, A. Narayanan, C. Butcher
The conventional approach to calibrating anisotropic yield functions relies upon uniaxial and biaxial tension data. Consequently, the stress state in which plane strain conditions arise is allowed to occur anywhere between uniaxial and equal-biaxial states despite growing experimental evidence suggesting that it is close to the theoretical stress state predicted by pressure-independent plasticity for
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Numerical simulations of ductile crack initiation and growth in a textured magnesium alloy Mech. Mater. (IF 3.9) Pub Date : 2024-01-23 S. Arjun Sreedhar, R. Narasimhan
In this work, the mechanics of ductile fracture near a notch tip in a basal textured Mg alloy is investigated through crystal plasticity based finite element analysis. An array of circular voids ahead of the tip subjected to mode I, plane strain, small scale yielding conditions is modelled. The effect of plastic anisotropy is examined by considering two notch orientations and contrasting the results
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Emerging anisotropy and tethering with memory effects in fibrous materials Mech. Mater. (IF 3.9) Pub Date : 2024-01-22 Antonino Favata, Andrea Rodella, Stefano Vidoli
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Enhanced mechanical and thermal properties in 3D printed Al2O3 lattice/ epoxy interpenetrating phase composites Mech. Mater. (IF 3.9) Pub Date : 2024-01-20 Yida Zhao, Xiu Yun Yap, Pengcheng Ye, Ian P. Seetoh, Huilu Guo, Changquan Lai, Du Zehui, Chee Lip Gan
Interpenetrating phase composites (IPCs) with 3D printed alumina microlattices infiltrated with epoxy have been fabricated. Mechanical analysis shows that the IPCs under quasi-static compression generally exhibit fracture behaviour similar to that of their ceramic-lattice constituent but in a gradual manner. The IPCs with Simple Cubic lattices initiate the fractures at the struts in the outer lattice
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Shape transformers for crashworthiness of additively manufactured engineering resin lattice structures: Experimental and numerical investigations Mech. Mater. (IF 3.9) Pub Date : 2024-01-20 Autumn R. Bernard, Muhammet Muaz Yalcin, Mostafa S.A. ElSayed
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Independent parameters of orthotropic linear transformation-based yield functions Mech. Mater. (IF 3.9) Pub Date : 2024-01-17 Tomas Manik
In this paper, a wide range of linear transformation-based orthotropic yield functions are reformulated in terms of only independent parameters, as they were originally formulated with too many parameters. This allows to perform a well-posed yield surface calibration. The effect of the hydrostatic part of the transformed stress is discussed for all existing formulations of transformation-based yield
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Numerical modelling of multi-directional thin-ply carbon/glass hybrid composites with open holes under tension Mech. Mater. (IF 3.9) Pub Date : 2024-01-14 J.D. Acosta, Guillermo Idarraga, P. Maimí, Meisam Jalalvand, J.M. Meza
Many researchers have used continuum damage mechanics for modelling damage in standard composites. This approach is intrinsically suitable for modelling the progress of damage modes spread over the specimen, which has been widely reported in pseudo-ductile hybrid composites. To the authors' best knowledge, this paper is the first numerical model based on continuum damage mechanics proposed for pseudo-ductile