Composite Structures最新文献

{"title":"Design of hybrid glass fibre reinforced composite structures for improved dynamic crushing performance","authors":"Holger Böhm ,&nbsp;Jonas Richter ,&nbsp;Jinbong Kim ,&nbsp;Mungyu Jeong ,&nbsp;Andreas Hornig ,&nbsp;Maik Gude","doi":"10.1016/j.compstruct.2025.119591","DOIUrl":"10.1016/j.compstruct.2025.119591","url":null,"abstract":"<div><div>In this study, the dynamic axial crushing behaviour of tubular specimens with varying geometric shape and dimensions made of glass fibre reinforced polyamide 6 composites containing either a fibre mat or a continuous bidirectional fibre reinforcement is experimentally analysed. In addition, the influence of hybridisation on the crushing behaviour is investigated using two different layer-by-layer configurations in order to increase the crushing performance compared to the source composites. All four composite configurations exhibited comparable damage and failure mechanisms, which are crucial for energy absorption. It is shown that hybrid composite specimens show more stable and efficient crushing behaviour, demonstrating up to a 26% increase in specific energy absorption and up to 33% enhancement in crush efficiency compared to both non-hybrid source materials. In particular, the hybrid configuration with a single layer of continuous bidirectional fibre reinforcement exhibits a significant improvement. The results demonstrate that hybridisation improves energy absorption and dynamic crushing performance, providing a basis for the potential use of recycled and recovered fibres in fibre mat-reinforced composites.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"372 ","pages":"Article 119591"},"PeriodicalIF":7.1,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144916655","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}

{"title":"Axial compressive behavior of steel tube restrained bamboo columns with different slenderness ratios","authors":"Zicheng Zhang ,&nbsp;Yang Wei ,&nbsp;Jiawei Chen ,&nbsp;Yu Lin ,&nbsp;Mingmin Ding","doi":"10.1016/j.compstruct.2025.119616","DOIUrl":"10.1016/j.compstruct.2025.119616","url":null,"abstract":"<div><div>Steel tube restrained laminated bamboo columns integrate the high strength and corrosion resistance of steel with the light weight and renewability of bamboo, offering considerable potential for application in energy-efficient and environmentally sustainable buildings. This study examines the influence of slenderness ratio on the mechanical behavior of laminated bamboo and steel tube restrained laminated bamboo columns. The results indicate that slenderness ratio markedly affects the failure mode, load-bearing capacity, and deformation behavior. Short columns predominantly exhibit end-strength failure, while medium and long columns fail through overall buckling. The stress–strain response of steel tube restrained laminated bamboo columns comprises elastic, elastic–plastic, and strain-softening stages. With increasing slenderness ratio, the axial compressive strength and initial stiffness of both types of columns decrease approximately linearly. However, steel tube restrained laminated bamboo columns demonstrate significantly enhanced resistance to the detrimental effects of slenderness due to the steel tube’s effective confinement of the core bamboo, particularly restraining lateral deformations. Consequently, the toughness coefficients of steel tube restrained laminated bamboo columns decline only marginally with increasing slenderness. The ultimate strengths of columns across various slenderness ratios were accurately predicted using Johnson’s parabolic empirical formula and a discount factor model.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"372 ","pages":"Article 119616"},"PeriodicalIF":7.1,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144904416","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}

{"title":"A general numerical method for the design of multi-ply variable stiffness trajectories of composite laminated shells","authors":"Kai Wang ,&nbsp;Xiaoping Wang ,&nbsp;Xianfeng Wang","doi":"10.1016/j.compstruct.2025.119590","DOIUrl":"10.1016/j.compstruct.2025.119590","url":null,"abstract":"<div><div>This paper introduces a systematic approach for designing multi-ply trajectories in composite variable stiffness laminated shells, with the goal of improving structural performance and preventing manufacturing defects. The method encompasses the entire design process, from initial trajectory generation, trajectory offset, boundary processing, and ply discretization to curvature evaluation, and extends to multi-ply design with the four distinct angle variation patterns. The effectiveness of the proposed multi-ply trajectory design concept is demonstrated through a parabolic composite laminated thick shell. The method is also applied to special cases, such as local modification, hole, and connection problems. All examples confirm that the proposed method successfully avoids common issues such as gaps, overlaps, and wrinkles. The scheme proposed in this paper is systematic and comprehensive, extending the variable stiffness ply design to composite laminated shells and providing strong technical support for the design and manufacture of high performance composite laminated shells.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119590"},"PeriodicalIF":7.1,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144921262","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}

{"title":"Fast effective strength prediction of heterogeneous materials by FCA-based basis reduction method and periodic Green’s function","authors":"Qian Zhang,&nbsp;Gengdong Cheng,&nbsp;Xiuchen Gong,&nbsp;Yinghao Nie","doi":"10.1016/j.compstruct.2025.119599","DOIUrl":"10.1016/j.compstruct.2025.119599","url":null,"abstract":"<div><div>The effective strength prediction of heterogeneous materials under varying loading conditions is crucial but highly challenging, especially considering the stress redistribution during repeated loading and unloading. The data-driven FEM-Cluster based Analysis basis reduction method for Shakedown Analysis (FCA-SA) has been proven to be an efficient approach. Based on the clustering idea, this method divides elements of the Representative Volume Element (RVE) with similar mechanical response into clusters to construct the reduced-order model (ROM) of RVE, and applies cluster eigenstrains on ROM to obtain cluster-based self-equilibrium element stress (SEES) bases for shakedown analysis. However, construction of the cluster-based SEES bases needs multiple time-consuming FEM analysis if the number of clusters is large. To address this issue, this paper proposes a novel method that utilizes the FCA-based Green’s function, which relates the stress at a point on homogeneous materials and the eigenstrain at periodically distributed points for fast constructing cluster-based SEES bases for RVE of heterogeneous materials. To justify the method, we first show that for the given discretized FE model of RVE, the SEES bases obtained under one material distribution remain valid after the material distribution changes. Further, the cluster-based SEES space of homogeneous materials is demonstrated to be an effective approximation to the cluster-based SEES space of heterogeneous materials. Thus, the analytical expression of FCA-based Green’s function is employed to efficiently construct cluster-based SEES bases of heterogeneous material. Combined with FCA-SA, this method enables the effective strength surface of 2D and 3D heterogeneous materials to be accurately predicted under different proportional loading conditions. Compared to our unmodified method, the computational efficiency of the SEES bases has been improved by an average of two orders of magnitude. Numerical examples demonstrate the effectiveness and efficiency of the proposed method.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119599"},"PeriodicalIF":7.1,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144989128","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}

{"title":"The evolution of hygroscopic internal stress of jute/PLA composites based on X-ray computed tomography","authors":"Ning Jiang ,&nbsp;Guangxin Li ,&nbsp;Yaomin Li ,&nbsp;Shangbin Su ,&nbsp;Xiangyu Tian","doi":"10.1016/j.compstruct.2025.119603","DOIUrl":"10.1016/j.compstruct.2025.119603","url":null,"abstract":"<div><div>The study investigates the water diffusion behavior and the evolution of internal stress in jute/polylactic acid (PLA) composites. X-ray tomography and 3D reconstruction techniques were employed to segregate jute fibers from the PLA matrix and establish a 3D finite element model that accurately represents the true microstructure of the composite. The kinetic parameters of water absorption (coefficient of water diffusion <em>D</em> and saturation water content <em>M_m</em>) and coefficient of water absorption swelling (<em>β</em>) of jute, PLA, and composites were obtained from experimental data and finite element analysis (FEA). Furthermore, the diffusion of water and the swelling behavior induced by water absorption in jute/PLA composites were simulated employing Abaqus software. The timing and location of composite damage, as well as the quantitative relationship between internal stress and time were determined. This study not only offers a novel method for analyzing the evolution of internal stress in short fiber reinforced composites but also provides significant guidance for the targeted design of short fiber reinforced composites.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119603"},"PeriodicalIF":7.1,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144933560","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}

{"title":"Photopolymerization additive manufacturing of highly stretchable CNT nanocomposites for 3D-architectured sensor applications","authors":"Jiwan Kang ,&nbsp;Mingyu Kang ,&nbsp;Soonjae Pyo ,&nbsp;Keun Park","doi":"10.1016/j.compstruct.2025.119614","DOIUrl":"10.1016/j.compstruct.2025.119614","url":null,"abstract":"<div><div>Additive manufacturing (AM) has emerged as a transformative technology for fabricating electrically conductive polymer nanocomposites incorporating carbon nanotubes (CNTs). This study presents the AM technology of highly stretchable and electrically conductive CNT nanocomposites with complex 3D architectures, optimized for digital light processing type vat photopolymerization. Multi-walled CNTs were uniformly dispersed in an aliphatic urethane diacrylate photopolymer resin at concentrations ranging from 0.1 to 0.9 wt%, significantly enhancing electrical conductivity and mechanical flexibility simultaneously. Systematic printability evaluations were then conducted to determine optimal printing conditions, effectively accommodating CNT fillers while minimizing adverse effects such as light scattering. Comprehensive characterizations revealed exceptional performance at 0.9 wt% CNT loading, achieving high elongation (223 %) and improved electrical conductivity (1.64 × 10⁻³ S/m), surpassing previously reported values. To demonstrate practical applicability, the optimized CNT nanocomposite was used to fabricate triply periodic minimal surface (TPMS)-based piezoresistive sensors, exhibiting a highly linear sensitivity of 0.251 kPa⁻¹ and reliable performance up to 70 % compression (57 kPa). Furthermore, these TPMS-structured sensors were successfully integrated into a smart insole platform, enabling real-time monitoring of plantar pressure distribution during various human motions and postures. The developed approach presents significant opportunities for the AM of functional CNT nanocomposites, combining superior stretchability, conductivity, and geometric complexity for next-generation flexible electronic applications.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"372 ","pages":"Article 119614"},"PeriodicalIF":7.1,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913915","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}

{"title":"Beyond Double-Double theory: n-Directional stacking sequence optimisation in composite laminates","authors":"José Humberto S. Almeida Jr. ,&nbsp;Emilia Balonek ,&nbsp;Saullo G.P. Castro","doi":"10.1016/j.compstruct.2025.119586","DOIUrl":"10.1016/j.compstruct.2025.119586","url":null,"abstract":"<div><div>This paper presents a novel stacking sequence design framework for composite laminates, extending the recently established Double-Double (<em>DD</em>) laminate theory developed by Stephen Tsai. By introducing and evaluating <em>n-Double (n-D)</em> layouts, ranging from single-angle (<em>D</em>) sequences to multi-directional designs such as <em>DD</em>, <em>DDD</em>, and <em>DDDD</em>; this study expands the design space for laminated composite structures, enabling improved trade-offs between buckling resistance and failure strength. A genetic algorithm (GA) is used to optimise the stacking sequences of 48- and 64-layer graphite/epoxy laminates under biaxial and uniaxial compressive loading across a range of geometric aspect ratios. Results show that while GA-based free-angle designs yield the highest buckling loads, structured <em>DDDD</em> configurations achieve similar or superior failure performance and maintain a high level of robustness across geometric variations. The <em>DDDD</em> designs also approximate GA-level buckling performance, with significantly improved regularity and manufacturability. These findings highlight the benefit of generalising Tsai’s <em>DD</em> theory towards <em>n-D</em> layouts, providing a systematic, practical, and high-performing approach to laminate optimisation.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119586"},"PeriodicalIF":7.1,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144926135","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}

{"title":"Advance in improving flexural performance of FRP-concrete-stainless steel double-skin tube (FCSDST) with distinct CFRP ply stacking arrangement","authors":"Zhenyu Huang ,&nbsp;Yiwei Wang ,&nbsp;Peng Wang ,&nbsp;Yingwu Zhou","doi":"10.1016/j.compstruct.2025.119612","DOIUrl":"10.1016/j.compstruct.2025.119612","url":null,"abstract":"<div><div>FRP-concrete-stainless steel double-skin tube (FCSDST) has been increasingly utilized in marine structures due to its excellent corrosion resistance and superior structural performance. To qualitatively and quantitatively uncover the effects of FRP lay-up configurations on flexural strength and displacement ductility of FCSDST, this study comprehensively investigates the flexural behavior of FCSDST featuring distinct carbon fiber reinforced polymer (CFRP) ply stacking sequences. Experimental outcomes indicate that FCSDSTs with a complex stacking sequence ([90/±15/90/±45₃]_n) achieve higher flexural strength and stiffness by 56 % and 45 %, respectively, than those with a ±45° configuration ([±45]_n). This enhancement results from the superior tensile capacity of smaller-angle fiber plies. In contrast, the ±45° lay-up shows 15 % higher displacement ductility due to stress redistribution mechanism in the tensile zone arising from matrix plastic flow and fiber reorientation. Numerical simulation results demonstrate that damage initiates at the loading point with local FRP buckling, followed by cracking of ULCC and yielding of steel tube, while the flexural failure eventually occurs due to the tensile rupture of FRP tube. A sectional integration-based model is also proposed to predict the flexural strength capacity, considering the strength of ultra-lightweight cementitious composite (ULCC) under triaxial compression and the confinement effects of CFRP with various thicknesses.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"372 ","pages":"Article 119612"},"PeriodicalIF":7.1,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144922026","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}

{"title":"Progress and prospects in cutting of particle reinforced metal matrix composites","authors":"Ming Li ,&nbsp;Qingguang Li ,&nbsp;Xianchao Pan ,&nbsp;Zuoquan Zhang ,&nbsp;Mengjie Li ,&nbsp;Shengzhi Xu ,&nbsp;Zixuan Wang ,&nbsp;Yunguang Zhou ,&nbsp;Lianjie Ma ,&nbsp;Tianbiao Yu ,&nbsp;Ji Zhao","doi":"10.1016/j.compstruct.2025.119598","DOIUrl":"10.1016/j.compstruct.2025.119598","url":null,"abstract":"<div><div>Particle reinforced metal matrix composites (PRMMCs) are widely used in aerospace and automotive sectors due to their superior mechanical properties. However, their heterogeneous microstructures and hard reinforcements pose serious challenges to conventional machining, leading to issues such as interfacial debonding, tool wear, and surface degradation. This review provides a comprehensive summary of recent advances in the cutting of PRMMCs, covering cutting mechanisms, modeling strategies, simulation methods, and assisted cutting technologies. First, the influence of microstructural parameters and interfacial behavior on cutting deformation and damage evolution is analyzed. Then, key geometric modeling approaches and constitutive model developments are discussed, along with a comparative evaluation of numerical methods such as FEM, DEM, MD, and SPH. The advantages and limitations of each method in capturing multiscale damage and interfacial failure are highlighted. Furthermore, advanced cutting technologies—including ultrasonic vibration, laser assistance, minimum quantity lubrication (MQL), and novel hybrid-assisted methods—are reviewed in terms of their mechanisms and process benefits. Finally, the review outlines current research gaps in dynamic damage characterization, simulation accuracy, and multi-field coupling, and proposes future directions such as multiscale–multiphyics modeling, intelligent process control, and green cutting technologies. This work aims to offer theoretical support and guidance for the cutting of PRMMCs.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"372 ","pages":"Article 119598"},"PeriodicalIF":7.1,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144892778","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}

{"title":"Interface enhancement of 3D printed CF/PLA composites by introducing “rigid-flexible” structures through multi-bond synergies","authors":"He Ou-Yang ,&nbsp;Xuanyu Zhou ,&nbsp;Yulong Zhang ,&nbsp;Yan Wang ,&nbsp;Ziqiang Zhu ,&nbsp;Jianan Bai ,&nbsp;Wei jiang ,&nbsp;Yanan Zhang ,&nbsp;Yubing Hu","doi":"10.1016/j.compstruct.2025.119613","DOIUrl":"10.1016/j.compstruct.2025.119613","url":null,"abstract":"<div><div>The interfacial properties between the components of a composite material influence the overall material properties. Herein, we proposed a “rigid-flexible” approach to improve the relatively weak interlaminar characteristic of 3D printed CF/PLA composite. Graphene oxide (GO) and polyethyleneimine (PEI) were chosen as the “rigid” and “flexible” phases, respectively. A stepwise chemical grafting technique was used to introduce “rigid-flexible” structures to the continuous carbon fiber (CCF) surface. Subsequently, filaments were prepared using modified CF and polylactic acid (PLA) and samples were obtained by FDM process. The CF-PEI-GO/PLA composites exhibited remarkable enhancements in mechanical performance relative to neat CF/PLA. Specifically, their interfacial shear strength (IFSS) doubled (101.64% increase), while impact resistance surged by 74.50%. Additionally, tensile strength and flexural strength showed substantial improvements of 31.17% and 24.86%, respectively. The interfacial enhancement mechanism was analyzed through a variety of characterization techniques such as SEM, AFM, XPS and Raman. This research offered new insights and methods towards the development of engineering materials for high performance 3d printing.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"372 ","pages":"Article 119613"},"PeriodicalIF":7.1,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144894851","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}