Mechanics of Materials最新文献

Self-organizing fractal damage patterns in dynamically-loaded heterogeneous materials 动态加载非均质材料的自组织分形损伤模式

IF 4.1 3区材料科学

Mechanics of Materials Pub Date : 2026-05-01 Epub Date: 2026-01-27 DOI: 10.1016/j.mechmat.2026.105624

Nathan Perchikov , Jacob Aboudi , Konstantin Y. Volokh

{"title":"Self-organizing fractal damage patterns in dynamically-loaded heterogeneous materials","authors":"Nathan Perchikov , Jacob Aboudi , Konstantin Y. Volokh","doi":"10.1016/j.mechmat.2026.105624","DOIUrl":"10.1016/j.mechmat.2026.105624","url":null,"abstract":"<div><div>The present paper treats the problem of dynamic propagation of damage in porous or composite materials with hyperelastic constituents subjected to rapid surface loading using a mechanistically derived constitutive theory, the High-Fidelity-Generalized-Method-of-Cells (HFGMC), specifically developed for the micromechanics of composites, and an explicit time-integration scheme. The constitutive theory includes a material density (damage) variable representing the mass fraction of intact material, associated with a homogenized stress, a momentum balance equation associated with a conserved mass of degrading matter and an evolution equation for the damage variable, based on local mass balance and a sharp energy threshold. Representative examples are solved, showing the emergence of spatial damage patterns of fractal character and associated power-law temporal dissipation correlations, both found to comply with experimental observations. The model can be used for material damage simulation in civil-engineering, biomechanical and geophysical applications. The paper complements previous studies on the application of the HFGMC to stress analysis in hyperelastic composites with fixed damage, quasistatic evolution of damage in hyperelastic composites and slow evolution of damage in viscoelastic composites.</div></div>","PeriodicalId":18296,"journal":{"name":"Mechanics of Materials","volume":"216 ","pages":"Article 105624"},"PeriodicalIF":4.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146096047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Temperature dependent strength prediction of nanotwinned nickel-based single crystal superalloys by integrating atomistic simulation and machine learning 基于原子模拟和机器学习的纳米孪晶镍基单晶高温合金温度相关强度预测

IF 4.1 3区材料科学

Mechanics of Materials Pub Date : 2026-05-01 Epub Date: 2026-01-30 DOI: 10.1016/j.mechmat.2026.105623

Ligang Sun , Sheng Zhang , Zhijia Qin , Linli Zhu , Jiaqi Zhu , Dongfeng Li

{"title":"Temperature dependent strength prediction of nanotwinned nickel-based single crystal superalloys by integrating atomistic simulation and machine learning","authors":"Ligang Sun , Sheng Zhang , Zhijia Qin , Linli Zhu , Jiaqi Zhu , Dongfeng Li","doi":"10.1016/j.mechmat.2026.105623","DOIUrl":"10.1016/j.mechmat.2026.105623","url":null,"abstract":"<div><div>Accurate prediction of the mechanical properties is of great importance for the optimal design and application of nanostructured metallic materials. Machine learning (ML) offers an efficient alternative, rapidly acquiring the ability to understand and predict material properties after sufficient training. Herein, this paper proposes a novel strategy by integrating molecular dynamics (MD) simulations, active learning sampling, and back-propagation neural network (BPNN) models. Firstly, the combined impact of twin thickness and ambient temperature on the mechanical behaviours is subjected to comprehensive analysis to guarantee the reliability of MD dataset. Subsequently, the BPNN model is developed and compared with support vector machine (SVM) model and random forest (RF) model. It is demonstrated that the BPNN model is capable of accurately predicting the mechanical properties of nickel-based single crystal superalloys, with a Pearson correlation coefficient exceeding 0.99. Notably, the model effectively captures the anomalous strength softening effect dominated by detwinning at extremely fine twin thicknesses. Overall, this work provides a reliable and efficient framework to facilitate the development of high-performance materials by taking account various nanostructures and service conditions.</div></div>","PeriodicalId":18296,"journal":{"name":"Mechanics of Materials","volume":"216 ","pages":"Article 105623"},"PeriodicalIF":4.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Surrogate multiscale modeling of SFRC: Rate-aware pull-out calibration and cohesive 3PB validation SFRC的代理多尺度建模：速率感知拔出校准和内聚3PB验证

IF 4.1 3区材料科学

Mechanics of Materials Pub Date : 2026-05-01 Epub Date: 2026-02-05 DOI: 10.1016/j.mechmat.2026.105630

Elisa Poveda, Rena C. Yu, Gonzalo Ruiz

{"title":"Surrogate multiscale modeling of SFRC: Rate-aware pull-out calibration and cohesive 3PB validation","authors":"Elisa Poveda, Rena C. Yu, Gonzalo Ruiz","doi":"10.1016/j.mechmat.2026.105630","DOIUrl":"10.1016/j.mechmat.2026.105630","url":null,"abstract":"<div><div>We propose a multiscale surrogate framework for steel–fiber-reinforced concrete (SFRC) that links single-fiber mechanics to structural flexure. At the mesoscale, we model single-fiber pull-out with explicit fiber, matrix, and interface, combining Mode-II bond degradation with rate-dependent friction and (for hooked ends) local bending/straightening. From the obtained load–slip curves we extract orientation-resolved surrogate bridging laws—compact relations that retain the effects of friction, loading rate, fiber geometry (smooth; hooked with one, two, or three folds), and inclination. These laws form a reusable database covering arbitrary orientations. At the meso-macroscale, the structural response is assembled by weighting the orientation-resolved surrogates with the measured fiber orientation histogram and expected fiber counts across the ligament. At the macroscale, we analyze notched three-point bending beam (3PB) with a central cohesive crack, where matrix traction–separation carries the fracture energy and the fiber contribution enters through the surrogate bridging traction. The framework is validated against single-fiber pull-out and 3PB tests for multiple hooked-end fibers (3D/4D/5D) and inclinations, reproducing peak load and post-peak softening trends. By calibrating physics at the fiber scale and propagating it through orientation-aware surrogates, the approach achieves predictive accuracy at substantially lower computational cost than explicit fiber simulations, while remaining extensible to other fiber types and rates.</div></div>","PeriodicalId":18296,"journal":{"name":"Mechanics of Materials","volume":"216 ","pages":"Article 105630"},"PeriodicalIF":4.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multiscale phase-field analysis of nacre’s asymmetric mechanical strength. A dual damage field approach with variational irreversibility constraints 珍珠质不对称力学强度的多尺度相场分析。具有变分不可逆性约束的双损伤场方法

IF 4.1 3区材料科学

Mechanics of Materials Pub Date : 2026-05-01 Epub Date: 2026-02-09 DOI: 10.1016/j.mechmat.2026.105627

Andrea Vigliotti

{"title":"Multiscale phase-field analysis of nacre’s asymmetric mechanical strength. A dual damage field approach with variational irreversibility constraints","authors":"Andrea Vigliotti","doi":"10.1016/j.mechmat.2026.105627","DOIUrl":"10.1016/j.mechmat.2026.105627","url":null,"abstract":"<div><div>Nacre, the iridescent inner layer of many mollusk shells, exhibits a remarkable combination of strength and toughness, characterized by a pronounced asymmetry in its tensile and compressive failure behavior. While its hierarchical microstructure is known to contribute to this performance, a complete mechanistic understanding of how this architecture governs the distinct failure modes under different loading regimes has remained elusive.</div><div>This work presents a comprehensive numerical investigation into the fracture mechanics of nacre, explaining the origins of its mechanical asymmetry.</div><div>Our simulations reveal that under tension, damage localizes in the organic matrix and at interfaces, leading to progressive tablet sliding and pull-out which defines the tensile strength. In compression, the model predicts a radically different failure mode: the confinement provided by the tablet structure suppresses matrix damage, leading to widespread buckling and kinking of the mineral tablets, which occurs at a significantly higher stress threshold. The proposed model successfully replicates the macroscopic stress–strain response and the observed failure morphologies for both loading conditions.</div><div>The results provide a fundamental mechanistic explanation for the superior compressive strength of nacre, directly linking its iconic hierarchical architecture to its exceptional and asymmetric mechanical performance.</div></div>","PeriodicalId":18296,"journal":{"name":"Mechanics of Materials","volume":"216 ","pages":"Article 105627"},"PeriodicalIF":4.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bi-layer dielectric elastomer beams: Theory and applications 双层介电弹性体束：理论与应用

IF 4.1 3区材料科学

Mechanics of Materials Pub Date : 2026-05-01 Epub Date: 2026-02-03 DOI: 10.1016/j.mechmat.2026.105626

Karine Sacagiu , Silvia Monchetti , Roberto Brighenti , Noy Cohen

{"title":"Bi-layer dielectric elastomer beams: Theory and applications","authors":"Karine Sacagiu , Silvia Monchetti , Roberto Brighenti , Noy Cohen","doi":"10.1016/j.mechmat.2026.105626","DOIUrl":"10.1016/j.mechmat.2026.105626","url":null,"abstract":"<div><div>Dielectric elastomers (DEs) are soft polymeric materials that deform in response to electric excitation. In this work, we investigate the behavior of bi-layer DE beams comprising layers with different electro-mechanical properties. Due to the mismatch in the properties of the layers, such beams bend when subjected to an electric field. We begin by deriving a model based on moderate rotations theory, which is an extension of linear elasticity that accounts for moderate-to-large rotations and deflections, for beams subjected to an electro-mechanical loading. The model reveals the dependency of the electro-mechanical properties of the layers on the overall response. To validate the model, we focus on free-standing beams that are subjected to two types of boundary conditions: (1) the application of an electric field across both layers and (2) imposing an electric field on one layer, while the second remains passive and serves as an elastic constraint. The model predictions show good quantitative agreement with finite element simulations. To demonstrate the practicality of using DE bi-layers, we consider the properties of commonly-employed DEs and study their performance in two types of applications — weight lifting actuators and grippers. We show that activation of a single layer enables the designs to perform a larger mechanical work. The proposed framework provides a fundamental understanding that enables efficient design of electrically activated systems, including actuators and soft robotics.</div></div>","PeriodicalId":18296,"journal":{"name":"Mechanics of Materials","volume":"216 ","pages":"Article 105626"},"PeriodicalIF":4.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Poro-mechanical analysis of a structural battery electrolyte: Experimental study and model calibration 结构电池电解液的孔隙力学分析：实验研究与模型校正

IF 4.1 3区材料科学

Mechanics of Materials Pub Date : 2026-05-01 Epub Date: 2026-02-12 DOI: 10.1016/j.mechmat.2026.105632

Carl Larsson, Fredrik Larsson, Ruben Tavano, Johanna Xu, Kenneth Runesson, Leif E. Asp

{"title":"Poro-mechanical analysis of a structural battery electrolyte: Experimental study and model calibration","authors":"Carl Larsson, Fredrik Larsson, Ruben Tavano, Johanna Xu, Kenneth Runesson, Leif E. Asp","doi":"10.1016/j.mechmat.2026.105632","DOIUrl":"10.1016/j.mechmat.2026.105632","url":null,"abstract":"<div><div>We present the calibration and validation of a continuum poro-viscoelastic model for a structural battery electrolyte in the finite deformation setting. The model is based on a Maxwell type rheology incorporating a Norton evolution law, coupled with a simple Darcy type seepage formulation to describe fluid transport. Experiments were performed using in-house manufactured cylindrical specimens subjected to uniaxial compression at different strain rates. Radial deformation of the specimens was recorded using an optical camera, while mass measurements before and after compression were used to quantify liquid electrolyte seepage. The experimental data were used to calibrate the model. Furthermore, independent stress relaxation tests conducted at varying strain rates were used for validation. The proposed model successfully captures the rate-dependent stress–strain behaviour, radial extension, and associated mass loss due to seepage, particularly at large compressive strains. Some discrepancies remain in the representation of time dependent relaxation at higher strain rates. The framework provides a robust foundation for describing coupled solid–fluid interaction in structural battery electrolytes and supports future efforts towards micromechanical modelling and design optimization of multifunctional energy storing composites.</div></div>","PeriodicalId":18296,"journal":{"name":"Mechanics of Materials","volume":"216 ","pages":"Article 105632"},"PeriodicalIF":4.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficient generation of composite RVEs with densely packed random particles 高密度随机粒子复合rve的高效生成

IF 4.1 3区材料科学

Mechanics of Materials Pub Date : 2026-05-01 Epub Date: 2026-02-10 DOI: 10.1016/j.mechmat.2026.105643

Wenlong Tian, Ying Ye, Ruiying Zhang, Xujiang Chao, Lehua Qi

{"title":"Efficient generation of composite RVEs with densely packed random particles","authors":"Wenlong Tian, Ying Ye, Ruiying Zhang, Xujiang Chao, Lehua Qi","doi":"10.1016/j.mechmat.2026.105643","DOIUrl":"10.1016/j.mechmat.2026.105643","url":null,"abstract":"<div><div>This work develops an efficient and robust method for generating representative volume elements (RVEs) of particle-reinforced composites with high particle volume fractions. The method combines an overlap potential minimization strategy with the KDTree algorithm and a simplified periodicity constraint to construct admissible, fully periodic particle configurations. Starting from an initial configuration that allows particle overlap, particle positions are iteratively updated by minimizing the overlap potential until a valid configuration satisfying a prescribed minimum interparticle distance is obtained, with the KDTree accelerating the identification of interacting particles. A systematic parametric study demonstrates that the method is insensitive to the choice of initial particle distributions and key algorithmic parameters, while consistently yielding statistically representative random packings with high computational efficiency. The spatial characteristics of the generated RVEs are quantified using several statistical descriptors, and the thermo-elastic properties of the composites are subsequently predicted using the FFT-based homogenization method.</div></div>","PeriodicalId":18296,"journal":{"name":"Mechanics of Materials","volume":"216 ","pages":"Article 105643"},"PeriodicalIF":4.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deformation governing mechanism of PEEK as a function of polymerization and crystallinity: Reacting force field-based atomistic study 聚合和结晶度对聚醚醚酮变形的影响机理：基于反应力场的原子学研究

IF 4.1 3区材料科学

Mechanics of Materials Pub Date : 2026-05-01 Epub Date: 2026-01-29 DOI: 10.1016/j.mechmat.2026.105629

Ashutosh Mittal, Avinash Parashar

{"title":"Deformation governing mechanism of PEEK as a function of polymerization and crystallinity: Reacting force field-based atomistic study","authors":"Ashutosh Mittal, Avinash Parashar","doi":"10.1016/j.mechmat.2026.105629","DOIUrl":"10.1016/j.mechmat.2026.105629","url":null,"abstract":"<div><div>Poly-ether-ether-ketone (PEEK) is a semicrystalline thermoplastic polymer widely used in engineering applications. The aim of this article is to study the tensile response of amorphous and crystalline phases of PEEK using all-atom molecular dynamics (MD) simulations. It is predicted from the atomistic simulations performed with the help of a reactive force field that the tensile response of PEEK is predominantly governed by crystalline morphology, strain rate, molecular weight, and chain-end defects. Molecular weight and number of chains have a negligible effect on mechanical properties, as well as deformation mechanics. However, as the number of aligned chains decreases, both tensile strength and elastic modulus of PEEK decrease. The amorphous–crystalline interface significantly influences the deformation in a semi-crystalline configuration of PEEK. The greater number of contact surfaces between the amorphous and crystalline phases helps in inducing after plasticity effect in PEEK. Polymerization in an amorphous configuration of PEEK significantly altered the entanglement and slipping between the PEEK chains. As the number of defective chains increases, the load-carrying capacity of the chain decreases, and materials show chain entanglement and sliding mechanics after initial bond scission failure of the polymer chain. Deformation mechanism and tensile properties of crystalline PEEK were also influenced by strain rate. The insights gained from this study suggest that tailoring crystallinity and chain alignment in PEEK could open pathways toward developing high-performance PEEK fibrils with mechanical properties analogous to Dyneema ultra-high-molecular-weight polyethylene (UHMWPE) nanofibers. Such fibrils could combine the superior thermal and chemical resistance of PEEK with the exceptional strength of highly crystalline, oriented polymer architectures, making them promising candidates for advanced structural, aerospace, and defence applications.</div></div>","PeriodicalId":18296,"journal":{"name":"Mechanics of Materials","volume":"216 ","pages":"Article 105629"},"PeriodicalIF":4.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A molecular dynamics study of mechanical behavior of vertically stacked NbSe2/MoS2 and WS2/MoS2 van der Waals heterostructures 垂直堆叠NbSe2/MoS2和WS2/MoS2范德华异质结构力学行为的分子动力学研究

IF 4.1 3区材料科学

Mechanics of Materials Pub Date : 2026-05-01 Epub Date: 2026-02-10 DOI: 10.1016/j.mechmat.2026.105642

Pratic Sarker Sourov , Sanjay Kushal Biswas , Bishwajit Kar , Mohammad Jane Alam Khan

{"title":"A molecular dynamics study of mechanical behavior of vertically stacked NbSe2/MoS2 and WS2/MoS2 van der Waals heterostructures","authors":"Pratic Sarker Sourov , Sanjay Kushal Biswas , Bishwajit Kar , Mohammad Jane Alam Khan","doi":"10.1016/j.mechmat.2026.105642","DOIUrl":"10.1016/j.mechmat.2026.105642","url":null,"abstract":"<div><div>Two-dimensional (2D) heterostructures, formed by vertically stacking monolayers, exhibit multifunctional features that exceed those of single-layer 2D materials. This study investigates the temperature-dependent mechanical properties, chirality effects, and fracture mechanisms of NbSe<sub>2</sub>/MoS<sub>2</sub> and WS<sub>2</sub>/MoS<sub>2</sub> vertical heterostructures in both armchair and zigzag directions using molecular dynamics (MD) simulations. Our results show that vertical stacking substantially influences the mechanical properties of the constituent layers, especially Young's Modulus (YM) and Ultimate Tensile Strength (UTS). When MoS<sub>2</sub> is vertically stacked on NbSe<sub>2</sub>, the UTS of the heterostructure reduces compared to that of its monolayers. In contrast, stacking MoS<sub>2</sub> on WS<sub>2</sub> leads to an UTS higher than MoS<sub>2</sub> but lower than WS<sub>2</sub>. Additionally, the YM of WS<sub>2</sub>/MoS<sub>2</sub> is higher than the YM of MoS<sub>2</sub>, while the YM of NbSe<sub>2</sub>/MoS<sub>2</sub> is lower than YM of MoS<sub>2</sub>. These mechanical trends persist consistently across the temperature range studied (100 K-600 K). With temperature, both the UTS and YM value decreases; emphasizing the sensitivity of mechanical properties to thermal conditions. Directional anisotropy is also observed: zigzag-oriented bonds exhibiting greater fracture strain than armchair-oriented bonds due to more compact atomic packing. In both heterostructures, fracture originates in the MoS<sub>2</sub> layer in both loading conditions, due to its lower fracture strain than other monolayers.</div></div>","PeriodicalId":18296,"journal":{"name":"Mechanics of Materials","volume":"216 ","pages":"Article 105642"},"PeriodicalIF":4.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Distinct regimes of mechanical reinforcement in lattice network-based interpenetrating phase composites 基于晶格网络的互穿相复合材料中机械增强的不同机制

IF 4.1 3区材料科学

Mechanics of Materials Pub Date : 2026-05-01 Epub Date: 2026-02-08 DOI: 10.1016/j.mechmat.2026.105640

Ehsanul Azim, Mohammad R. Islam

{"title":"Distinct regimes of mechanical reinforcement in lattice network-based interpenetrating phase composites","authors":"Ehsanul Azim, Mohammad R. Islam","doi":"10.1016/j.mechmat.2026.105640","DOIUrl":"10.1016/j.mechmat.2026.105640","url":null,"abstract":"<div><div>Interpenetrating phase composites with lattice network-based reinforcement phases are promising candidates for lightweight structural applications. While a variety of IPCs have been developed using different lattice network topologies and matrix types, not all combinations lead to desired reinforcement. There is a lack of understanding of how to select a network topology and matrix properties to achieve a targeted reinforcement. This study investigates the synergistic effects of lattice network and matrix properties on the IPC reinforcement using finite element simulations and theoretical scaling analysis. Three strut-based network topologies (cubic, body-centered, and octet) have been considered, while the bulk material properties of the matrix have been varied with respect to empty lattice networks. The elastic modulus, yield strength, and post-yield softening of IPCs can be tuned by the modulus and strength ratios of the lattice network and matrix. It is observed that the scaling exponents of IPC gradually decrease with an increase in matrix stiffness and strength, suggesting a bending-to-stretching dominated deformation of struts. Two distinct regimes are observed: a weak reinforcement regime in which the IPC reinforcement only depends on the lattice network, and a strong reinforcement regime controlled by both lattice network and matrix. Two master curves have been developed based on two non-dimensional parameters that define to which regime a given IPC belongs and the associated reinforcement as a function of lattice network geometry and the bulk material properties of the matrix.</div></div>","PeriodicalId":18296,"journal":{"name":"Mechanics of Materials","volume":"216 ","pages":"Article 105640"},"PeriodicalIF":4.1,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0