Composite Structures最新文献_第10页

Uncertainty quantification of the stiffness and strength of particle-reinforced composites accelerated by a machine-learning-based homogenisation method 基于机器学习的均匀化方法加速颗粒增强复合材料刚度和强度的不确定性量化

IF 7.1 2区材料科学

Composite Structures Pub Date : 2026-04-01 Epub Date: 2026-01-12 DOI: 10.1016/j.compstruct.2026.120052

Chuang Ma , Yichao Zhu

{"title":"Uncertainty quantification of the stiffness and strength of particle-reinforced composites accelerated by a machine-learning-based homogenisation method","authors":"Chuang Ma , Yichao Zhu","doi":"10.1016/j.compstruct.2026.120052","DOIUrl":"10.1016/j.compstruct.2026.120052","url":null,"abstract":"<div><div>This article proposes an efficient scheme for stiffness and strength uncertainty quantification of three-dimensional linearly elastic particle-reinforced composites (PRCs). The stochastic particle distribution within a representative volume element (RVE) is described with a randomly perturbed mesoscale mapping function. Such a way of uncertainty quantification, with the used of a machine learning based reiterated asymptotic homogenisation and localisation method, enables fast evaluation of the RVE mechanical behaviour. It is shown that it takes a laptop computer 26 min to output the maximum von Mises values of 8000 stochastic RVE. Equipped with such a high-efficiency method, one may (a) quickly analyse the ranges of RVE stiffness and strength against the RVE stochastic measure; (b) quickly determine the probability of failure initiation in an RVE bearing a certain volume fraction under any macroscopic applied strain. Moreover, a well-trained neural networks for a given set of material selection can be quickly prepared for other constituting materials with the use of the transfer learning technique.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"381 ","pages":"Article 120052"},"PeriodicalIF":7.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145974443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Integrated multiscale modelling strategy for shape-memory polymer nanocomposites: Linking surface chemistry-driven filler distribution to macroscopic properties 形状记忆聚合物纳米复合材料的集成多尺度建模策略：将表面化学驱动的填料分布与宏观性能联系起来

IF 7.1 2区材料科学

Composite Structures Pub Date : 2026-04-01 Epub Date: 2026-01-08 DOI: 10.1016/j.compstruct.2026.120045

Sungwoo Park , Jeong-ha Lee , Maenghyo Cho , Yun Seog Lee , Seunghwa Yang

{"title":"Integrated multiscale modelling strategy for shape-memory polymer nanocomposites: Linking surface chemistry-driven filler distribution to macroscopic properties","authors":"Sungwoo Park , Jeong-ha Lee , Maenghyo Cho , Yun Seog Lee , Seunghwa Yang","doi":"10.1016/j.compstruct.2026.120045","DOIUrl":"10.1016/j.compstruct.2026.120045","url":null,"abstract":"<div><div>Obtaining uniform nanoparticle dispersion in polymer matrices is essential for multifunctional properties of shape-memory polymer (SMP) nanocomposites. However, existing computational approaches do not completely account for the effects of nanoparticle surface treatment on nanoparticle dispersion and the impact of this dispersion on nanocomposite properties. This work presents an integrated multiscale modelling framework combining all-atom molecular dynamics (MD), dissipative particle dynamics (DPD), and finite element (FE) homogenization to connect nanoparticle surface chemistry, filler distribution, interphase structure, and macroscopic properties of shape-memory polyurethane (SMPU) nanocomposites. Solubility parameters and mixing energies of SMPU segments and silica nanoparticles were obtained from MD simulations to evaluate surface treatment effects on dispersion. These results informed Flory–Huggins parameters for DPD, enabling quantification of nanoparticle clustering as a function of hard-segment content (HSC) and nanoparticle loading. Based on this methodology, a framework was developed to predict optimal surface treatments for enhanced nanoparticle dispersion. DPD-driven nanocomposite morphologies were then integrated with FE homogenization to estimate mechanical properties. The methodology was further applied to nanocomposites with non-spherical fillers, demonstrating prediction of mechanical performance of cylindrical nanoparticle-reinforced systems as a function of HSC and surface treatment. This approach provides a versatile computational tool for guiding nanocomposite design and optimization.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"381 ","pages":"Article 120045"},"PeriodicalIF":7.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145974437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Pressure-dependent strain gradient plasticity for micro-mechanical analyses of fibre-reinforced polymers 纤维增强聚合物微力学分析的压力依赖应变梯度塑性

IF 7.1 2区材料科学

Composite Structures Pub Date : 2026-04-01 Epub Date: 2025-12-19 DOI: 10.1016/j.compstruct.2025.119965

Igor A. Rodrigues Lopes , A. Francisca Carvalho Alves , Nathan Klavzer , Thomas Pardoen , Pedro P. Camanho

{"title":"Pressure-dependent strain gradient plasticity for micro-mechanical analyses of fibre-reinforced polymers","authors":"Igor A. Rodrigues Lopes , A. Francisca Carvalho Alves , Nathan Klavzer , Thomas Pardoen , Pedro P. Camanho","doi":"10.1016/j.compstruct.2025.119965","DOIUrl":"10.1016/j.compstruct.2025.119965","url":null,"abstract":"<div><div>A new constitutive model for epoxy resins is proposed to accurately capture the micro-scale strain fields in fibre-reinforced composites. The model extends conventional plasticity by introducing strain-gradient effects through an implicit gradient formulation that accounts for pressure sensitivity and asymmetric tension/compression behaviour-critical features to represent the mechanical response of epoxies at small scales. The formulation is implemented in a commercial finite element platform through user-defined subroutines and solved via an analogy with coupled thermo-mechanical problems that include Helmholtz-type equations. The ability of the model to predict the size-dependent response and to prevent unrealistic overpredictions of strain magnitude is illustrated through the simulation of nanoindentation on neat epoxy and of the local strain field behaviour in a composite. The results are compared with experimental data, which are also used to calibrate the additional constitutive parameters through a composite Bayesian optimization strategy. The proposed framework significantly improves the predictive capabilities of micromechanical models for composite materials by incorporating scale-dependent plasticity mechanisms.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"381 ","pages":"Article 119965"},"PeriodicalIF":7.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145903994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 study on the mechanical property requirements of the resin for composite overwrapped pressure vessels under cryogenic high-pressure conditions 低温高压条件下复合包覆压力容器用树脂力学性能要求研究

IF 7.1 2区材料科学

Composite Structures Pub Date : 2026-04-01 Epub Date: 2026-01-10 DOI: 10.1016/j.compstruct.2026.120057

Zhuangzhuang Cao , Zhoutian Ge , Liangliang Qi , Sohail Yasin , Jianfeng Shi

{"title":"A study on the mechanical property requirements of the resin for composite overwrapped pressure vessels under cryogenic high-pressure conditions","authors":"Zhuangzhuang Cao , Zhoutian Ge , Liangliang Qi , Sohail Yasin , Jianfeng Shi","doi":"10.1016/j.compstruct.2026.120057","DOIUrl":"10.1016/j.compstruct.2026.120057","url":null,"abstract":"<div><div>Developing and modifying resins with excellent cryogenic mechanical properties is an effective solution to prevent matrix cracking in the composite overwrapped pressure vessels (COPVs) under cryogenic high-pressure conditions. However, the applicability of resins in COPVs at cryogenic temperatures still relies on experimental results, lacking appropriate mechanical property evaluation index for the resin. Therefore, this study established an analytical framework for “resin properties − composite material properties − vessel safety” and proposed mechanical property requirements for resins. In the framework, the stress and failure behavior of COPVs under cryogenic high-pressure conditions were analyzed based on three-dimensional elasticity theory and the Hashin failure criterion. The effects of resin tensile strength, elastic modulus, and coefficient of thermal expansion on the failure of COPVs were also examined. The results indicate the composite layer of COPVs undergoes matrix failure at lower internal pressures at cryogenic temperatures. Enhancing resin tensile strength, decreasing resin elastic modulus, and reducing the coefficient of thermal expansion are beneficial for improving the critical failure pressure at matrix failure. Furthermore, two-stage mechanical property requirements and specific indices for resins were established, providing guidance for the modification and development of resins for COPVs under cryogenic high-pressure conditions.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"381 ","pages":"Article 120057"},"PeriodicalIF":7.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146035133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Explosion damage evaluation of hybrid BFRP-steel bars and short BFRP fibers reinforced concrete shield tunnel segments BFRP-钢混合筋与短BFRP纤维增强混凝土盾构隧道管片爆炸损伤评价

IF 7.1 2区材料科学

Composite Structures Pub Date : 2026-04-01 Epub Date: 2026-01-06 DOI: 10.1016/j.compstruct.2026.120036

Min Hou , Ruiyi Jiang , Jiang Feng , Zhenyu Qiu , Hualin Fan

{"title":"Explosion damage evaluation of hybrid BFRP-steel bars and short BFRP fibers reinforced concrete shield tunnel segments","authors":"Min Hou , Ruiyi Jiang , Jiang Feng , Zhenyu Qiu , Hualin Fan","doi":"10.1016/j.compstruct.2026.120036","DOIUrl":"10.1016/j.compstruct.2026.120036","url":null,"abstract":"<div><div>Combining mechanisms of plasticity and ductility of steel bars, long elastic deformation, high tensile strength and wave impedance consistency with concrete of basalt fiber reinforced polymer (BFRP) rebars, and high tensile strength and spalling resistance of short BFRP fibers (SBFs) reinforced concrete, SBFs-reinforced concrete (SRC) shield tunnel segment (STS) specimens reinforced by hybrid BFRP-steel rebars were prepared to get improved explosion resistance. Full-scale explosion experiments were carried out to capture the dynamic damage styles from cracking, spalling to perforation. Residual load bearing capacity was applied to quantitively evaluate the structural damage of the exploded STS specimens through quasi-static flexural experiments. The research reveals that spalling and perforation greatly reduce the bearing capacity of the STS. Under explosion of the same scaled distance (SD), the hybrid rebars reinforced tunnel segment (HRRTS) has much smaller structural damage, as concrete spalling is obviously attenuated by the BFRP bars and SBFs. The experiments strongly support potential applications of HRRTS in underground protective structures.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"381 ","pages":"Article 120036"},"PeriodicalIF":7.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145974932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Computational continua method for multiscale progressive damage analysis of 3D braided composite I-beam under bending load 弯曲荷载作用下三维编织复合材料工字梁多尺度渐进损伤分析的计算连续方法

IF 7.1 2区材料科学

Composite Structures Pub Date : 2026-04-01 Epub Date: 2026-01-03 DOI: 10.1016/j.compstruct.2025.120017

Aoshuang Wan , Zhen Zhi , Dinghe Li

{"title":"Computational continua method for multiscale progressive damage analysis of 3D braided composite I-beam under bending load","authors":"Aoshuang Wan , Zhen Zhi , Dinghe Li","doi":"10.1016/j.compstruct.2025.120017","DOIUrl":"10.1016/j.compstruct.2025.120017","url":null,"abstract":"<div><div>This paper presents a numerical and experimental research of the multiscale mechanical response and damage evolution mechanisms of three-dimensional five-directional (3D5D) braided composite I-beam under three-point bending load. A new multiscale progressive damage analysis method is proposed by integrating the computational continua (<em>C</em><sup>2</sup>) method, non-local damage theory and failure criteria, which is suitable for the the 3D5D braided composites having large and complex microscopic unit cell (UC) as it can describe the non-negligible macroscopic stress/strain variation on the microscopic UC domain. The simulation results of macroscopic load–displacement response and strain field distribution as well as microscopic damage evolution process are in good agreement with the experimental results and observations, demonstrating validity of the proposed method. The results show that the load–displacement curves can be divided into five stages in general. The microscopic damage mainly initiates at the upper flange region near the indenter in a sequence of matrix cracking, yarn/matrix interfacial debonding and yarn breakage, which then grows downward in a semicircle. Until the final fracture of I-beam, it maintains a good load bearing capacity even after extensive damage growth in the upper flange owing to the slow damage growth in the web, demonstrating its excellent damage tolerance performance.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"381 ","pages":"Article 120017"},"PeriodicalIF":7.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145903996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 robust virtual element method framework coupling phase-field and cohesive zone models for crack propagation in composite structures 复合材料结构裂纹扩展的相场和内聚区耦合模型的鲁棒虚拟元方法框架

IF 7.1 2区材料科学

Composite Structures Pub Date : 2026-04-01 Epub Date: 2026-01-15 DOI: 10.1016/j.compstruct.2026.120081

Shubham Sharma, Ananth Ramaswamy

{"title":"A robust virtual element method framework coupling phase-field and cohesive zone models for crack propagation in composite structures","authors":"Shubham Sharma, Ananth Ramaswamy","doi":"10.1016/j.compstruct.2026.120081","DOIUrl":"10.1016/j.compstruct.2026.120081","url":null,"abstract":"<div><div>We propose a Virtual Element Method (VEM) framework that couples linear cohesive elements with lowest-order virtual elements to simulate the interplay between matrix cracking and interfacial delamination in composite structures. The matrix domain is discretized using virtual elements based on a phase-field brittle fracture model, enabling accurate representation of crack kinking, curving, and branching. Interfaces are discretized using cohesive elements derived from a potential-based cohesive zone model to capture mixed-mode separation. This coupled discretization handles rapid mesh transitions along interfaces and allows inclusions to be modeled as single polygonal elements with a large number of edges, offering significant meshing flexibility. We validate the framework through numerical examples encompassing mixed-mode interfacial debonding, matrix cracking, crack penetration and deflection at interfaces, and crack kinking from interfaces, comparing results against existing numerical and experimental data. Additionally, we demonstrate a hybrid strategy where the virtual elements are used to discretize inclusions while the finite elements are used to discretize a 3D-printed hyperelastic matrix domain. This hybrid discretization is then employed to simulate multiple crack nucleation and crack coalescence in a 3D-printed hyperelastic composite undergoing finite deformation before brittle fracture. The VEM framework is implemented in the commercial finite element software ABAQUS (Standard) via user-defined elements, making advanced virtual element capabilities accessible within an industry-standard platform. This approach thus provides a robust and flexible tool for simulating brittle fracture in composites with complex damage mechanisms.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"381 ","pages":"Article 120081"},"PeriodicalIF":7.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145974434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Compressive behavior of composite laminates after multiple impacts: Effects of impact energy combinations and layup configurations 复合材料层压板在多次冲击后的压缩行为：冲击能量组合和铺层结构的影响

IF 7.1 2区材料科学

Composite Structures Pub Date : 2026-04-01 Epub Date: 2026-01-14 DOI: 10.1016/j.compstruct.2026.120066

Jinbo Du , Kuo Tian , Jialin Cui , Peng Hao

{"title":"Compressive behavior of composite laminates after multiple impacts: Effects of impact energy combinations and layup configurations","authors":"Jinbo Du , Kuo Tian , Jialin Cui , Peng Hao","doi":"10.1016/j.compstruct.2026.120066","DOIUrl":"10.1016/j.compstruct.2026.120066","url":null,"abstract":"<div><div>This study focuses on the effects of impact energy combinations and layup configurations on the residual compressive performance and failure evolution mechanisms of carbon fiber reinforced composite laminates under multiple impacts. The compressive after impact properties were examined under four distinct impact energy levels. Laminates with layup configurations of [0<sub>2</sub>/90<sub>2</sub>]<sub>4s</sub>, [0/90] <sub>4s</sub>, and [0<sub>2</sub>/90<sub>2</sub>]<sub>2s</sub> were designed to investigate the influences of ply orientation, ply thickness and ply clustering effects. Delamination after impact and after compression failure was characterized using C-scan techniques. The results indicate that under multiple impacts, higher energy impacts occurring later in the sequence lead to greater total energy absorption and larger delamination areas, resulting in lower residual compressive strength. The uniform distribution of impact energy resulted in the highest residual compressive performance. Quasi-isotropic laminates exhibited superior residual compressive strength after repeated impacts compared to cross-ply laminates. The use of thinner plies and an increased number of interleaved ply arrangements can enhance the residual compressive performance of composites subjected to repeated impacts. This study provides insights into the effect of impact energy sequencing on damage progression and reveals its implications for the residual compressive behavior of composite laminates.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"381 ","pages":"Article 120066"},"PeriodicalIF":7.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146035604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Bond behavior between surface-treated 3D-printed FRP bars and concrete 表面处理的3d打印FRP筋与混凝土之间的粘结行为

IF 7.1 2区材料科学

Composite Structures Pub Date : 2026-04-01 Epub Date: 2026-01-08 DOI: 10.1016/j.compstruct.2026.120051

Zi-Tong Yan , Xianwen Hu , Jie-Kai Zhou , Yan Zhuge , Jun-Jie Zeng

{"title":"Bond behavior between surface-treated 3D-printed FRP bars and concrete","authors":"Zi-Tong Yan , Xianwen Hu , Jie-Kai Zhou , Yan Zhuge , Jun-Jie Zeng","doi":"10.1016/j.compstruct.2026.120051","DOIUrl":"10.1016/j.compstruct.2026.120051","url":null,"abstract":"<div><div>Fiber-reinforced polymer (FRP) bars have been widely adopted as internal reinforcement for concrete structures, however, the conventional pultrusion fabrication process imposes limitations including reliance on molds and material waste. To address these issues, an innovative form of 3D-printed FRP (3DP-FRP) reinforcing bars based on additive manufacturing has recently been developed by the authors. In this study, a novel surface treatment for 3DP-FRP bars using serrated cross-section and sand coating is developed to enhance the bar-concrete interfacial bond performance. A total of 33 pull-out tests were performed to systematically investigate the effects of surface treatment methods, concrete strength, anchorage length, and bar diameter on the bond behavior of 3DP-FRP bars in concrete. Results show that untreated 3DP-FRP bars achieve a bond strength (the maximum average shear stress along the bonded length) of up to 7.3 MPa, markedly exceeding that of smooth pultruded bars. The bond strength increases with concrete strength but decreases with a greater anchorage length or bar diameter. The bars with a helical wrap and coarse sand coating (HWCS) exhibit the highest bond strength. Furthermore, the applicability of the modified BPE (mBPE) model for bond-slip characterization of 3DP-FRP bars is validated, and a new predictive equation for bond strength estimation is proposed.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"381 ","pages":"Article 120051"},"PeriodicalIF":7.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146035137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Genetic programming-assisted multiscale analyses of functionally graded twisted bilayer graphene-reinforced aluminum composite plate 遗传规划辅助下功能梯度双扭曲层石墨烯增强铝复合材料板的多尺度分析

IF 7.1 2区材料科学

Composite Structures Pub Date : 2026-04-01 Epub Date: 2026-01-15 DOI: 10.1016/j.compstruct.2026.120068

Y.X. Shao , W. Zhang , Y.F. Zhang , A. Amer , J. Chen

{"title":"Genetic programming-assisted multiscale analyses of functionally graded twisted bilayer graphene-reinforced aluminum composite plate","authors":"Y.X. Shao , W. Zhang , Y.F. Zhang , A. Amer , J. Chen","doi":"10.1016/j.compstruct.2026.120068","DOIUrl":"10.1016/j.compstruct.2026.120068","url":null,"abstract":"<div><div>The superior mechanical properties of twisted bilayer graphene (TBG) over single-layer graphene (SLG) remain unexplored for metal matrix composites. A comprehensive multiscale framework, from atomistics modeling to functional structures, highlights TBG as a superior reinforcement for next-generation composites for application in the aerospace and electrical field. We firstly systematically investigate the reinforcement efficacy of TBG with arbitrary twist angles in aluminum (Al) matrix. Comprehensive multiscale framework verifies TBG’s superior strength combined molecular dynamics (MD) simulation, genetic programming (GP) algorithm and vibration analysis. At first, twenty-one twist angles are selected to investigate the strength of TBG from nanoscale, verifying the comparable mechanical properties with SLG. Furthermore, the mechanical properties of TBG/Al composites are evaluated across five volume fractions and twenty-one twist angles, with SLG/Al composites included for comparison under micro-scale aspects. To bridge micro–macro mechanical response, genetic programming (GP) algorithm is applied to modify the Halpin–Tsai micromechanical model with high accuracy (<em>R</em><sup>2</sup> > 0.9). The enhancement effect of TBG exceeds SLG in composites especially at higher volume fractions by 2 ∼ 10 %. Finally, the functionally graded TBG reinforced Al matrix (FG-TBG/Al) composite plate is established to analyze free and nonlinear vibration under various boundary conditions and geometry parameters. Compared to FG-SLG/Al composite plates, the mechanical performance of FG-TBG/Al exhibits significantly enhanced by 2 %∼30 % under different volume fractions in rectangular geometries.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"381 ","pages":"Article 120068"},"PeriodicalIF":7.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146035135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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