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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 behaviour 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
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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
Incremental sheet forming (ISF) produces 3D components imposing localized deformation by spherical-ended tool moving on a predefined path without requiring component-specific die/punch. The formability achieved in ISF is much higher than the conventional sheet forming processes; however, the deformation imposed during ISF alters the mechanical properties of the component. The present work investigates
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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
Poromechanics is a well-established field of continuum mechanics which seeks to model materials with multiple phases, usually a stiff solid phase and fluid phases of liquids or gases. Applications are widespread particularly in geomechanics where Terzaghi’s effective stress is widely used to solve engineering soil mechanics problems. This approach assumes that the solid phase is incompressible, an
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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
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Time–temperature correlations of amorphous thermoplastics at large strains based on molecular dynamics simulations Mech. Mater. (IF 3.9) Pub Date : 2024-01-15 Wuyang Zhao, Rui Xiao, Paul Steinmann, Sebastian Pfaller
In this paper, we investigate the time–temperature correlation of amorphous thermoplastics at large strains based on coarse-grained molecular dynamics simulations. This correlation behavior is characterized by the strain hardening modulus in uniaxial tension simulations at different strain rates across the glass transition region. The temperature regime is divided into a melt zone, a glassy zone, and
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Modeling electromechanical behaviors of soft conductive composites embedded with liquid metal fibers Mech. Mater. (IF 3.9) Pub Date : 2024-01-12 Quang-Kha Nguyen, Pu Zhang
Soft conductive materials are key components of soft electronics, sensors, actuators, and wearable devices. The electrical conductivity matrix or tensor of soft conductive materials is usually deformation-dependent, but there is a lack of constitutive modeling work on it. To fill this knowledge gap, we consider a soft conductive composite embedded with liquid metal fibers as an example. The difference
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Constitutive models for confined elastomeric layers: Effects of nonlinearity and compressibility Mech. Mater. (IF 3.9) Pub Date : 2024-01-09 Sida Hao, Rui Huang, Gregory J. Rodin
Elastomers tend to undergo large deformations accompanied by small volumetric changes. For elastomeric layers sandwiched between rigid plates, large deformations can be significantly limited by the constraints imposed by the plates. Further, those constraints can be enhanced by material’s inability to undergo large volumetric changes. From this perspective, it is appropriate to examine the validity
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Mean field homogenization schemes using averages of stress, strain and strain energy density and applications Mech. Mater. (IF 3.9) Pub Date : 2024-01-09 Tao Fu, Chuanying Li, Hao Hu, Xianghe Peng
The average of stress (AS) and average of strain (AN) were often used in the development of conventional mean-field homogenization (MFH) schemes, but their correlation with the average of strain energy density (AE) has rarely been discussed. In this work, we examined the correlations of AE with AS and AN, and found that AE can be reduced to the product of AS or AN under uniform boundary stress or linear
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Elastic foundation-introduced defective phononic crystals for tunable energy harvesting Mech. Mater. (IF 3.9) Pub Date : 2024-01-06 Gongye Zhang, Zhuangzhuang He, Shaopeng Wang, Jun Hong, Yu Cong, Shuitao Gu
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GHz surface waves in Al/LiTaO3/Si composite: Effect of the Drude electrode on dispersion, attenuation and mode shapes Mech. Mater. (IF 3.9) Pub Date : 2024-01-06 Feng Zhu, Ernian Pan, Nian Li, Yilin Qu
In fifth generation (5G) mobile communication, radio frequency is in the super high frequency range (3–30 GHz). Thus, different from Ohm law, electrode loss at GHz frequency becomes frequency-dependent. As such, many properties, especially attenuation of piezoelectric acoustic devices, should be reevaluated. In this paper, the attenuation of GHz surface wave propagating in composite structure made
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Effect of the sonic shock wave on void evolution in materials under irradiation Mech. Mater. (IF 3.9) Pub Date : 2023-12-30 Ning Zhou, YinBo Zhu, HengAn Wu
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A nonlinear continuum framework for constitutive modeling of active polymer gels Mech. Mater. (IF 3.9) Pub Date : 2024-01-03 Priyanka Nemani, Ravi Sastri Ayyagari, Pratyush Dayal
Chemo-mechanical transduction is one of the key mechanisms that has formed the basis for designing bio-inspired self-driven synthetic systems from soft materials. Polymer hydrogels that use Belousov–Zhabotinsky (BZ) reaction are a unique class of dynamical reaction–diffusion (RD) systems that can continuously transduce internal chemical energy, from the reaction, to produce sustained mechanical work
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Understanding the torsional mechanical behavior of twisting carbon nanotube ribbon with different boundary conditions Mech. Mater. (IF 3.9) Pub Date : 2023-12-30 Xiaoping Hu, Yuxuan Zheng, Gengzhi Sun, Pengfei Wang
Twisting can generate internal stress and store torsional energy, which is widely used as actuators and energy harvesters in electronic and biomedical fields. However, uncovering the effect of internal stress remains unclear. Herein, the experimental and theoretical mechanical model of the twisted ribbon with different boundary conditions was derived and analyzed. The dynamic experimental results indicate
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Implicit multiscale finite element analysis of polymer physics-based multiscale constitutive model for elastomers Mech. Mater. (IF 3.9) Pub Date : 2023-12-25 Jiwon Jung, Gun Jin Yun
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Topological boundary states in micropolar gyroelastic continua Mech. Mater. (IF 3.9) Pub Date : 2023-12-23 Mohamed Shaat, Xin-Lin Gao
The study of topology in elastic media has been primarily focused on achieving non-trivial topological states in discrete elastic lattices through active or chiral microscopic interactions. Realization of such topological states in continuous elastic media remains largely unexplored. In this study, a new continuum theory of micropolar gyroelasticity is developed and applied to attain non-trivial topological
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A continuum-micromechanical model for crazing in glassy polymers under cyclic loading Mech. Mater. (IF 3.9) Pub Date : 2023-12-20 Tobias Laschuetza, Thomas Seelig
A micromechanics-inspired constitutive model is developed to describe the deformation behaviour of fibrillated material within crazes in glassy polymers subjected to cyclic loading. In a finite strain setting, the model accounts for the morphology change taking place by the drawing of material from the intact bulk polymer into craze fibrils and their transition from primitive to mature fibrils. Building
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Identification of thermo-viscoplastic behavior for AA6061 under in-plane biaxial loadings Mech. Mater. (IF 3.9) Pub Date : 2023-12-20 J. Liang, D. Guines, L. Leotoing
This work aims to investigate the thermo-visco-plastic behavior of an aluminum alloy (AA6061) sheet metal submitted to in-plane biaxial loadings under warm conditions. Biaxial tensile tests are performed in a temperature range from room temperature to 160 °C, and in a strain rate range from quasi-static to the so-called “intermediate” strain rate (up to few s−1). The specimen shape used in this study
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Torsional waves in hyperelastic shells: Appearing shock waves and energy dissipation Mech. Mater. (IF 3.9) Pub Date : 2023-12-23 Sergey V. Kuznetsov
Nonlinear torsional waves propagating in cylindrical shells made of hyperelastic material obeying Ogden model, are studied by a combined approach comprising theoretical and finite element analysis. It was found, apparently for the first time, that delta-like pulses of torsional waves attenuate with distance due to the appearance of shock wave fronts. Moreover, both strain and kinetic mechanical energy
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Bicrystallography-informed Frenkel–Kontorova model for interlayer dislocations in strained 2D heterostructures Mech. Mater. (IF 3.9) Pub Date : 2023-12-23 Md Tusher Ahmed, Chenhaoyue Wang, Amartya S. Banerjee, Nikhil Chandra Admal
In recent years, van der Waals (vdW) heterostructures and homostructures, which consist of stacks of two-dimensional (2D) materials, have risen to prominence due to their association with exotic quantum phenomena originating from correlated electronic states harbored by them. Atomistic scale relaxation effects play an extremely important role in the electronic scale quantum physics of these systems
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Elastoplastic damage analysis and structural optimization of soluble bridge plug based on phase field method Mech. Mater. (IF 3.9) Pub Date : 2023-12-22 Zhaozhong Yang, Jianping Liu, Liangping Yi, Rongjie Yang, Xiaogang Li
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Mechanical behaviour of ductile polymer cellular model structures manufactured by FDM Mech. Mater. (IF 3.9) Pub Date : 2023-12-18 Jacopo Agnelli, Claudia Pagano, Irene Fassi, Laura Treccani, Fabio Bignotti, Francesco Baldi
In this work, Acrylonitrile-Butadiene-Styrene model structures were manufactured by FDM, and their mechanical behaviour investigated under compression, both at small and at large strains. The structure design strategy adopted, based on the use of circular cross-section beam-like elements formed under controlled conditions, led to obtain open-cell structures (with a porosity degree of ≈ 65%) composed
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A unified viscoelastic constitutive model for studying the mechanical behaviors of polyelectrolyte complex hydrogels with different crosslinker degrees Mech. Mater. (IF 3.9) Pub Date : 2023-12-12 Weicheng Cai, Zhenhua Xiao, Taolin Sun, Jiong Wang
Bio-based hydrogels formed by the chemically or physically cross-links are promising materials in the biological system. In this paper, we propose a constitutive model within the framework of finite-strain viscoelasticity to investigate the mechanical behaviors of bio-based polyelectrolyte complex (PEC) hydrogels from the ionic complexation of sodium hyaluronate (HA)/chitosan with and without chemical
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Self-similar hierarchical honeycombs in two different fractal layouts: A comparative study of the in-plane crushing behaviors Mech. Mater. (IF 3.9) Pub Date : 2023-12-17 Yu Chen
This paper provides a new avenue for the development of cellular structures. By mimicking the chemical structural formula of the TpPB-Fe coordination polymer, a new self-similar hierarchical honeycomb was proposed. With respect to the existing self-similar hierarchical honeycomb in the literature which was constructed by replacing every three-edge vertex of the regular hexagonal honeycomb with a smaller
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Micromechanical modeling of the effects of crystal content on the visco-hyperelastic-viscoplastic behavior and fracture of semi-crystalline polymers Mech. Mater. (IF 3.9) Pub Date : 2023-12-16 G. Ayoub, M. Makki, R. Kadri, R. Dargazany, M. Nait Abdelaziz
In this work, we present a novel physically based visco-hyperelastic-viscoplastic micromechanical constitutive model, which establishes a link between the evolution of the macromolecular network properties to the mechanical and fracture behavior of variable-crystallinity semi-crystalline polymers. Unlike previous micromechanical constitutive models that were only time independent, we propose a time-dependent
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Metamaterial invisibility of a corner target with proportional integral active control Mech. Mater. (IF 3.9) Pub Date : 2023-12-10 Jing-Wei Jiang, Yi-Ze Wang
Wave invisibility in confined space has been proved practical significance in mechanical engineering and military fields. In this work, a flexural wave cloak of a corner-domain target in a metamaterial plate with proportional integral (PI) active control circuit is proposed. According to the double reflection principle and mechanical characteristic at the boundary, wave fields for a corner-domain target
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Active compliant mechanisms for optimized actuation by LCE-based artificial muscles Mech. Mater. (IF 3.9) Pub Date : 2023-12-15 Wenhui Chen, Ruicheng Wang, Ke Liu
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Flexural wave rainbow trapping effect in the periodic non-uniform Euler-Bernoulli beams and its application in energy harvesting Mech. Mater. (IF 3.9) Pub Date : 2023-12-11 Tian Deng, Luke Zhao, Feng Jin
The rainbow trapping of elastic wave enables spatial frequency shunting and energy concentration phenomenon, which implies that the broadband vibration will forbid propagating forward and occur energy concentration at different positions of metamaterial structure. This paper proposes a novel metamaterial consisting of the periodic non-uniform Euler-Bernoulli beams with an arbitrary profile section
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A simple stress field solution for conical indentation Mech. Mater. (IF 3.9) Pub Date : 2023-12-04 Zhi-Qiang Wang, Huai-Rong Xiao, Li-Xun Cai, Mao-Bo Huang
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Modeling strain-induced martensitic transformation in austenitic stainless steels subjected to cryogenic temperatures using incremental mean-field homogenization schemes Mech. Mater. (IF 3.9) Pub Date : 2023-12-09 P. Fernández-Pisón, A.R. Vishnu, G. Vadillo, J.A. Rodríguez-Martínez
Austenitic stainless steels are commonly used as structural materials in high-field superconducting magnet systems because they retain high strength, ductility, and toughness at very low temperatures, and they are paramagnetic or antiferromagnetic under the Néel temperature in their fully austenitic state. However, they are susceptible to strain-induced martensitic transformation, especially at cryogenic
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Microstructural effects in rate-dependent responses of smooth and notched magnesium bars Mech. Mater. (IF 3.9) Pub Date : 2023-11-30 Shahmeer Baweja, Shailendra P. Joshi
We perform three-dimensional crystal plasticity simulations of smooth and notched bar geometries made of polycrystalline hexagonal close-packed material representing a magnesium alloy. The polycrystalline microstructure is explicitly resolved to investigate the combined effect of initial texture and grain size on the rate-dependent macroscopic responses and their micromechanical underpinnings under
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Computational homogenization of linear elastic properties in porous non-woven fibrous materials Mech. Mater. (IF 3.9) Pub Date : 2023-11-29 Mikhail Kuts, James Walker, Pania Newell
Porous non-woven fibrous media are widely used in various industrial applications such as filtration, insulation, and medical textiles due to their unique structural and functional properties. However, predicting the mechanical behavior of these materials is challenging due to their complex microstructure and anisotropic nature. In this study, a computational model is developed to simulate the mechanical