Composite Structures最新文献_第5页

Design, modelling and experimental validation of a composite suspension system for solar EVs 太阳能电动汽车复合悬架系统的设计、建模和实验验证

IF 7.1 2区材料科学

Composite Structures Pub Date : 2025-09-17 DOI: 10.1016/j.compstruct.2025.119650

Ana Pavlovic, Giangiacomo Minak

{"title":"Design, modelling and experimental validation of a composite suspension system for solar EVs","authors":"Ana Pavlovic, Giangiacomo Minak","doi":"10.1016/j.compstruct.2025.119650","DOIUrl":"10.1016/j.compstruct.2025.119650","url":null,"abstract":"<div><div>This study presents the design, finite element modeling, and experimental validation of a novel rear suspension system for lightweight, solar-powered electric vehicles. The proposed system features stiffness-tunable components made entirely from carbon fiber-reinforced polymers (CFRPs), including a torsion bar and flexural springs engineered to maximize the strength-to-weight ratio while ensuring fail-safe operation. This work represents one of the first fully integrated efforts to design, simulate, and validate a complete CFRP-based suspension system tailored for solar vehicle applications, with specific attention to redundancy and reliability. A multilayer layup strategy is adopted to customize the mechanical response under vertical, lateral, and torsional loading. Finite Element (FE) analyses using layered shell elements are conducted to assess stress distributions and identify potential failure zones, employing the Tsai–Wu failure criterion. Experimental testing confirms the accuracy of the numerical predictions, with stiffness deviations below 10% under representative loading conditions. The results demonstrate the feasibility of using anisotropic CFRP laminates to achieve compact, efficient, and reliable suspension systems with stiffness-tuning capabilities. The proposed approach offers a validated design methodology suitable for long-distance solar vehicle competitions, where weight, safety, and operability under partial damage are critical.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119650"},"PeriodicalIF":7.1,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106446","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 novel and flexible path planning algorithm for robotic filament winding of non-axisymmetric tubular structures 非轴对称管状结构机器人缠绕丝的柔性路径规划算法

IF 7.1 2区材料科学

Composite Structures Pub Date : 2025-09-17 DOI: 10.1016/j.compstruct.2025.119647

Francesco D’Orazio, Federico Cottini, Fabio Spazzini, Valentina Furlan, Hermes Giberti

{"title":"A novel and flexible path planning algorithm for robotic filament winding of non-axisymmetric tubular structures","authors":"Francesco D’Orazio, Federico Cottini, Fabio Spazzini, Valentina Furlan, Hermes Giberti","doi":"10.1016/j.compstruct.2025.119647","DOIUrl":"10.1016/j.compstruct.2025.119647","url":null,"abstract":"<div><div>With the increasing automation and use of composite materials in manufacturing processes, one of the most interesting and attractive technologies is Filament Winding. While this technology is already widely used with the support of robotic systems for the production of large and typically axisymmetric components, the same cannot be said when looking at the market for smaller and more complex objects. The real lack in this area is the development of robust and flexible algorithms capable of planning a path on complex real objects whose main information is derived from STL files. In this work, a new discrete algorithm for path planning based on IPS and NIS is proposed. This algorithm exploits information derived from STL geometries and friction to actively control the winding angle and to plan the trajectory with more flexibility. Its non-iterative approach ensures less computational effort, and the generated trajectory simplifies the transport condition along the geodesic direction used in previous algorithms. The algorithm was first validated with an analytically defined geometry (with errors below 2%) and subsequently its application was extended to geometries of varying degrees of complexity, demonstrating its robustness and accuracy. A non-axisymmetric tubular structure was used as a case study. Tests performed for different winding angles (45°to 80°) demonstrated the feasibility of the process based on the new algorithm. The results obtained with errors generally below 5°testify to the stability and accuracy of the solution.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119647"},"PeriodicalIF":7.1,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118108","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

Heuristic-guided technique for hybrid laminate stacking sequence multi modal optimization using branch-bound and relaxation methods 基于分支定界法和松弛法的混合层叠序列多模态优化启发式制导技术

IF 7.1 2区材料科学

Composite Structures Pub Date : 2025-09-16 DOI: 10.1016/j.compstruct.2025.119659

Javier Sanz-Corretge , Thanh-Dam Pham , Luan Trinh , Trang Le , Gregorio Ferreira , Van-Nguyen Dinh , Paul Leahy , Paul Weaver

{"title":"Heuristic-guided technique for hybrid laminate stacking sequence multi modal optimization using branch-bound and relaxation methods","authors":"Javier Sanz-Corretge , Thanh-Dam Pham , Luan Trinh , Trang Le , Gregorio Ferreira , Van-Nguyen Dinh , Paul Leahy , Paul Weaver","doi":"10.1016/j.compstruct.2025.119659","DOIUrl":"10.1016/j.compstruct.2025.119659","url":null,"abstract":"<div><div>This study tackles the challenge of multimodal optimization for hybrid laminate stacking sequences under generic load conditions, including membrane and/or moment loading. The objective is to determine the optimal lay-up sequence of plies made from different materials to minimize laminate cost, while satisfying structural, weight, and manufacturing constraints. A key contribution of this work is the development of a novel heuristic function, integrated into the proposed algorithm, which significantly improves efficiency and robustness in solving problems where multiple global optima may coexist for hybrid laminates.</div><div>The methodology employs an implicit, incrementally constructed directed graph (digraph), guided by the heuristic function at each decision step. This informed search strategy (augmented with both branch-and-bound and relaxation techniques) reduces the effective branching factor and mitigates the exponential growth of the search tree. The algorithm was validated through a series of benchmark tests for which global optima were previously obtained via brute-force search. Its performance was thoroughly assessed in terms of its ability to identify all optimal solutions and the number of iterations required to reach each one. Finally, the algorithm was applied to the redesign of a wind turbine blade root (based on the IEA 15-Megawatt Offshore Reference NREL wind project), achieving a cost reduction of up to 35 % while maintaining stiffness and mass within acceptable limits (below 5 %).</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119659"},"PeriodicalIF":7.1,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118107","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

Optimization algorithms-assisted unified path generation and decomposition for 3D needled preforms with excellent interlaminar properties 具有优异层间性能的三维针状预制体的优化算法辅助统一路径生成与分解

IF 7.1 2区材料科学

Composite Structures Pub Date : 2025-09-16 DOI: 10.1016/j.compstruct.2025.119662

Yibo Gao , Feng Liu , Kuanmin Mao , Wudi Du , Haoran Li , Kexu Zhang

{"title":"Optimization algorithms-assisted unified path generation and decomposition for 3D needled preforms with excellent interlaminar properties","authors":"Yibo Gao , Feng Liu , Kuanmin Mao , Wudi Du , Haoran Li , Kexu Zhang","doi":"10.1016/j.compstruct.2025.119662","DOIUrl":"10.1016/j.compstruct.2025.119662","url":null,"abstract":"<div><div>With the gradual development of stiff-flexible coupled and deformable composite materials, the needle-punching process, due to its flexible forming advantages, shows broad application prospects in the local reinforcement of preforms. However, the inter-layer performance of 3D needle-punched preforms remains weak, and the influence of needle-punching process parameters on inter-layer performance is yet to be quantified. Therefore, this study explores the effect of needle-punching paths on the inter-layer performance of preforms and proposes a unified path generation and decomposition (UPD-PPO-MOGA) method, which combines proximal policy optimization (PPO) and multi-objective genetic algorithm (MOGA), to generate uniform, discrete, and low-redundancy needle-punching paths to improve the inter-layer performance of needle-punched preforms. Experimental comparisons demonstrate that prioritizing inter-layer overlap, followed by uniformity, and finally in-plane overlap, is crucial for achieving superior inter-layer performance. The resulting preforms showed a 55% and 70.15% increase in peeling energy and a 32.36% and 41.22%.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119662"},"PeriodicalIF":7.1,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105810","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

Efficient post-buckling analysis of laminated plates with bending–twisting coupling using a novel algorithmic implementation 利用一种新的算法实现具有弯曲-扭转耦合的层合板的有效后屈曲分析

IF 7.1 2区材料科学

Composite Structures Pub Date : 2025-09-16 DOI: 10.1016/j.compstruct.2025.119646

Sebastian D. Dillen, Christian Mittelstedt

{"title":"Efficient post-buckling analysis of laminated plates with bending–twisting coupling using a novel algorithmic implementation","authors":"Sebastian D. Dillen, Christian Mittelstedt","doi":"10.1016/j.compstruct.2025.119646","DOIUrl":"10.1016/j.compstruct.2025.119646","url":null,"abstract":"<div><div>Thin-walled composite structures offer significant weight reduction benefits; however, they are susceptible to stability-related failure mechanisms such as buckling. While local buckling does not necessarily result in catastrophic failure, it is crucial to understand post-buckling behaviour in order to maximise structural efficiency. This study introduces an efficient non-dimensional Ritz-based method for analysing the buckling and post-buckling behaviour of symmetrical, balanced, simply supported rectangular plates with bending–twisting coupling. The dimensionless formulation provides results that are generic and therefore universally valid. It enables the generic evaluation of the influence of the bending–twisting coupling on the buckling behaviour. The proposed approach employs orthogonal polynomial shape functions to accurately capture complex coupling effects while optimising computational effort and convergence. The methodology extends previous research by incorporating an novel advanced integral computation technique and algorithm to enhance post-buckling analysis. The findings demonstrate an enhancement in the accuracy and efficiency of predicting buckling behaviour, particularly in highly anisotropic laminates, where traditional approaches encounter limitations. This study contributes to the development of more robust analytical tools for composite structural analysis, facilitating more effective lightweight design applications.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119646"},"PeriodicalIF":7.1,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106441","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

Effect of hybrid nano rare earth reinforcement and hot rolling on mechanical, corrosion, and biocompatibility of biodegradable Mg implants 复合纳米稀土增强和热轧对可生物降解镁植入物力学、腐蚀和生物相容性的影响

IF 7.1 2区材料科学

Composite Structures Pub Date : 2025-09-15 DOI: 10.1016/j.compstruct.2025.119657

Rakesh Kumar , Neha Mehrotra , Kaushik Pal

{"title":"Effect of hybrid nano rare earth reinforcement and hot rolling on mechanical, corrosion, and biocompatibility of biodegradable Mg implants","authors":"Rakesh Kumar , Neha Mehrotra , Kaushik Pal","doi":"10.1016/j.compstruct.2025.119657","DOIUrl":"10.1016/j.compstruct.2025.119657","url":null,"abstract":"<div><div>Mg composites have emerged as promising materials for fabricating biodegradable implants, as their bone-like mechanical properties mitigate stress shielding effects and inherent biocompatibility facilitates healing. However, inadequate strength, limited ductility and rapid degradation constrain their clinical applicability. Microscale bioceramic reinforcements in Mg enhance strength but at the expense of ductility, while nanoscale reinforcements increase strength while retaining plasticity. In the present study, Mg composites containing metallic reinforcement (Ti, Zn, etc.), hybridised with synthesised nanoparticles (CeO<sub>2</sub>, HA), were fabricated and investigated in both as-cast and hot-rolled conditions as potential biodegradable implant material. In as-cast composite, Ti addition achieved moderate strength improvements (55 % in YS and 30 % in UTS) but also improved elongation by 8.9 %, while Zn, Mn, and Ca addition improved strength significantly(146 % in YS and 58% in UTS), but reduced elongation. Hot-rolling further amplified strength and microhardness, with remarkable gains in HR-MHC/ZMC (236 % in YS, 106 % in UTS, and 81 % in microhardness). Electrochemical and static immersion studies on hybridised Mg composites revealed that alloying Zn, Mn, and Ca enhanced the polarization resistance by 148 % in AC-MHC/ZMC, but Ti increased H<sub>2</sub> evolution in AC-MHC/Ti. MTT assay with MG-63 cells revealed cell viability above75 % and dual fluorescence staining confirmed healthy cell morphology.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119657"},"PeriodicalIF":7.1,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106447","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

Open-Hole tensile tests on poplar veneer laminates and plywood: Applicability of the point stress criterion 杨木单板和胶合板的开孔拉伸试验：点应力准则的适用性

IF 7.1 2区材料科学

Composite Structures Pub Date : 2025-09-15 DOI: 10.1016/j.compstruct.2025.119658

A. Peignon , J. Serra , A. Cantarel , F. Eyma , B. Castanié

{"title":"Open-Hole tensile tests on poplar veneer laminates and plywood: Applicability of the point stress criterion","authors":"A. Peignon , J. Serra , A. Cantarel , F. Eyma , B. Castanié","doi":"10.1016/j.compstruct.2025.119658","DOIUrl":"10.1016/j.compstruct.2025.119658","url":null,"abstract":"<div><div>This study explores the open-hole tensile strength of two types of poplar veneer laminates: a quasi-isotropic laminate [90°/45°/0°/–45°]<sub>s</sub> and a plywood laminate [90°/0°/90°/0°<sub>1/2</sub>]<sub>s</sub>. The effects of hole diameter and specimen geometry on tensile strength were examined, and the Point Stress Criterion (PSC) was used to evaluate material behaviours. The results show that the stress concentration values (d<sub>0</sub>) for the veneer laminates align closely with those of fibre-reinforced polymer composites, demonstrating the applicability of the PSC to wood-based laminates.</div><div>While the d<sub>0</sub> values are similar to those observed in synthetic composites, the failure mode differs significantly. Unlike most synthetic composites, no delamination occurs near the hole or along the edges of the studied laminates. Instead, the specimens exhibit a brittle fracture mode, characterised by sudden failure without ply separation.</div><div>These findings provide insights into the influence of hole effects on laminate design and suggest that the PSC can be used to optimise the performance of veneer laminates in engineering applications.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119658"},"PeriodicalIF":7.1,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105806","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

Nondestructive evaluation of barely visible impact damage in composite structures – a review 复合材料结构中几乎不可见冲击损伤的无损评价综述

IF 7.1 2区材料科学

Composite Structures Pub Date : 2025-09-15 DOI: 10.1016/j.compstruct.2025.119661

R. Janeliukstis , D. Baranovskis , A. Katunin , I. Zorin , P. Burgholzer , H. Lopes , K. Dragan , S. Rucevskis , L. Gaile , Xiao Chen

{"title":"Nondestructive evaluation of barely visible impact damage in composite structures – a review","authors":"R. Janeliukstis , D. Baranovskis , A. Katunin , I. Zorin , P. Burgholzer , H. Lopes , K. Dragan , S. Rucevskis , L. Gaile , Xiao Chen","doi":"10.1016/j.compstruct.2025.119661","DOIUrl":"10.1016/j.compstruct.2025.119661","url":null,"abstract":"<div><div>Timely detection of barely visible impact damage (BVID) in composite structures is paramount to prevent catastrophic failure. Traditionally, BVID detection has been carried out in non-destructive (NDT) inspections. Nevertheless, damage detection in some applications may not be enough. For example, estimation of damage location, extent, failure mode, or prognosis of remaining useful life may be desirable. The information obtained on damage can be potentially enhanced by employing more universal or specialized signal processing algorithms. This review provides a detailed description of the workings of several NDT techniques, such as ultrasonics, X-ray tomography, thermography, optical shearography, and optical computed tomography, concerning impact damage detection. These NDT techniques are then compared in terms of their performance, such as sensitivity and resolution, speed, complexity, and cost. A particular emphasis is put on signal processing algorithms that are established to enrich damage characterization, along with their advantages and limitations. Cases of combining several NDT techniques in enhancing BVID detection and the merits of such approaches are explored. Discussion of possible ways of increasing safety of composite structures, for example, implementation of artificial intelligence for enhanced inspections, manufacturing of advanced BVID-resistant composites and integration of robotized systems for increased data acquisition is provided.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119661"},"PeriodicalIF":7.1,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106448","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

Tortoise-back-reinforced elliptical-embedded honeycomb composite structure: experimental and numerical analysis of responses under blast loading 龟背增强椭圆嵌入蜂窝复合结构：爆炸荷载下响应的实验与数值分析

IF 7.1 2区材料科学

Composite Structures Pub Date : 2025-09-15 DOI: 10.1016/j.compstruct.2025.119656

Hao Chen , Ke Yan , Xingyu Shen , Jiaqi Bai , Shijun Luo , Mengqi Yuan , Shaobo Qi , Chongchi Hou

{"title":"Tortoise-back-reinforced elliptical-embedded honeycomb composite structure: experimental and numerical analysis of responses under blast loading","authors":"Hao Chen , Ke Yan , Xingyu Shen , Jiaqi Bai , Shijun Luo , Mengqi Yuan , Shaobo Qi , Chongchi Hou","doi":"10.1016/j.compstruct.2025.119656","DOIUrl":"10.1016/j.compstruct.2025.119656","url":null,"abstract":"<div><div>Honeycomb composite structures have attracted extensive attention in protective engineering due to high specific energy absorption and strength-to-weight ratios. However, conventional honeycomb composite structures have difficulty meeting modern protective requirements. This study innovatively introduces a biomimetic tortoise-back and tendon structure to design a Tortoise-back-reinforced Elliptical-embedded Honeycomb Composite Structure (TEHS), investigating its dynamic responses and energy absorption characteristics under blast loading. Results indicate that the TEHS primarily exhibits localized large-deformation damage under blast loading, with energy absorption concentrated in both local deformation and global response stages. Parametric analysis reveals that cell length, cell wall thickness, and number of layers significantly influence the overall energy absorption capacity, meanwhile core height ratio has negligible impact on total energy absorption but drastically alters energy distribution patterns among structural components. Through analyzing dynamic yielding and response mechanisms, a mathematical model for predicting residual deflection under blast loading was established, which accurately predicts the final structural deformations.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119656"},"PeriodicalIF":7.1,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105809","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 universal kinking-based strength model for unidirectional composite laminates under multiaxial loading 多轴载荷下单向复合材料层合板的通用屈曲强度模型

IF 7.1 2区材料科学

Composite Structures Pub Date : 2025-09-15 DOI: 10.1016/j.compstruct.2025.119655

Honghao Liu , Helin Pan , Lei Zu , Qian Zhang , Guiming Zhang , Jianhui Fu , Qiaoguo Wu , Xiaolong Jia , Lichuan Zhou

{"title":"A universal kinking-based strength model for unidirectional composite laminates under multiaxial loading","authors":"Honghao Liu , Helin Pan , Lei Zu , Qian Zhang , Guiming Zhang , Jianhui Fu , Qiaoguo Wu , Xiaolong Jia , Lichuan Zhou","doi":"10.1016/j.compstruct.2025.119655","DOIUrl":"10.1016/j.compstruct.2025.119655","url":null,"abstract":"<div><div>The high-accuracy and efficient prediction of unidirectional composite materials under multi-load interactive loading conditions has long been a challenge. However, existing failure criteria for single-load conditions fail to account for load coupling effects, leading to reduced accuracy and efficiency along with limited applicability in multi-load scenarios. In this work, we propose the closed-form kinking-based (CFK) model as a universal multiaxial strength model by considering kinking-band instability. The CFK model combines biaxial tensile strength with uniaxial parameters derived from the torsion model, significantly improving the prediction of failure modes under multi-axial loading. Meanwhile, the model incorporates shear-driven kinking instability, enabling precise representation of the stress state. Critically, the closed-form solution replaces traditional search algorithm, achieving a balance between accuracy and efficiency. The model requires only input of readily measurable material parameters and demonstrates universal applicability to diverse composite material systems. Finite element simulations and experimental validation demonstrate that the model enhances computational efficiency by 41.4% relative to traditional algorithms, while significantly outperforming existing models in prediction accuracy. These findings establish an effective framework for multiaxial strength prediction of composites, while providing important theoretical basis for related fields.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119655"},"PeriodicalIF":7.1,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105808","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