Composite Structures最新文献_第6页

Systematic numerical design of a supported FCC plate lattice with structural reinforcement and gradation for energy absorption 具有结构增强和能量吸收梯度的FCC支撑板晶格的系统数值设计

IF 7.1 2区材料科学

Composite Structures Pub Date : 2025-09-18 DOI: 10.1016/j.compstruct.2025.119677

Mohamed Abdelmageed , Ibrahim H. ZainElabdeen , Kamran A. Khan , Wael Zaki , Wesley Cantwell

{"title":"Systematic numerical design of a supported FCC plate lattice with structural reinforcement and gradation for energy absorption","authors":"Mohamed Abdelmageed , Ibrahim H. ZainElabdeen , Kamran A. Khan , Wael Zaki , Wesley Cantwell","doi":"10.1016/j.compstruct.2025.119677","DOIUrl":"10.1016/j.compstruct.2025.119677","url":null,"abstract":"<div><div>In structural engineering and protective applications, efficient energy-absorbing materials are essential. Additively manufactured plate lattices are promising due to their high stiffness-to-density ratio. This study presents a numerical analysis of three basic plate lattices, simple cubic (SC), body-centered cubic (BCC), and face-centered cubic (FCC), under large-strain quasi-static compression. The effects of unit cell count, relative density, and axial grading on energy absorption and stability are investigated. Hybrid structures combining two or three lattice types are also studied across various component ratios. Based on the findings, a new design combining FCC with vertical supports is proposed. Numerical results are validated through experiments on FCC, BCC, and the binary-hybrid FCC + BCC lattices, showing good agreement in force response and deformation patterns. The SC structure achieves the highest specific energy absorption (SEA) but suffers from poor stability due to vertical walls, while the FCC offers the best stability. Integrating 70 % SC into FCC or BCC enhances SEA but reduces structural stability. The proposed hybrid structure outperforms all others, achieving 30 % higher SEA than FCC alone while maintaining stable deformation. Axial grading further boosts SEA by 11.6 %. This work demonstrates a pathway to optimizing both energy absorption and mechanical stability in lattice-based materials.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119677"},"PeriodicalIF":7.1,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155289","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

Multilevel homogenization framework for equivalent elastic properties of TSV heterostructures: integrating theoretical modeling and micromechanical FEM TSV异质结构等效弹性特性的多级均匀化框架：理论建模与微力学有限元的集成

IF 7.1 2区材料科学

Composite Structures Pub Date : 2025-09-17 DOI: 10.1016/j.compstruct.2025.119669

Jian Liu , Xiaojing Zheng , Qingya Li

{"title":"Multilevel homogenization framework for equivalent elastic properties of TSV heterostructures: integrating theoretical modeling and micromechanical FEM","authors":"Jian Liu , Xiaojing Zheng , Qingya Li","doi":"10.1016/j.compstruct.2025.119669","DOIUrl":"10.1016/j.compstruct.2025.119669","url":null,"abstract":"<div><div>This study presents a hetero-structured interposer incorporating complete Through-Silicon Vias (TSVs) with functional barriers and insulating layers. A multiscale homogenization framework is developed to characterize the mechanical behavior of TSV architectures, explicitly considering constitutive relationships among constituent materials to capture intrinsic heterogeneities affecting macroscale interposer performance. The proposed methodology combines elastic mechanics theory with micromechanical finite element analysis to calculate equivalent elastic constants and thermal expansion coefficients of TSV assemblies through a representative volume element model. Numerical validation demonstrates maximum discrepancies of 13.16% between theoretical predictions and finite element simulations when scaling TSV copper core diameters from 0.1 mm to 0.6 mm. Parametric analysis reveals significant orthotropic effects: modeling silicon as isotropic induces substantial errors (42.94%) in equivalent properties compared to orthotropic treatment, emphasizing the critical need to account for crystalline orientation in TSV mechanical analysis. The homogenization framework successfully predicts the bending deformation and free vibration responses of TSV-embedded interposers under clamped boundary conditions. Comparative assessments show excellent agreement between theoretical and numerical results, with displacement errors below 8% and natural frequency deviations within 5%, confirming the model’s accuracy in capturing global structural behavior. This methodology establishes a validated computational framework for TSV reliability assessment in 3D integrated circuits, achieving less than 15% prediction errors that meet industrial accuracy requirements. The demonstrated capability to resolve interfacial stress interactions while maintaining computational efficiency positions this approach as a critical tool for advanced packaging optimization.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119669"},"PeriodicalIF":7.1,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155228","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

Multi-physics property evaluation and actuation response of first-order fractal-inspired photostrictive composites: a finite element analysis 一阶分形激发光致伸缩复合材料的多物理场性能评价与驱动响应：有限元分析

IF 7.1 2区材料科学

Composite Structures Pub Date : 2025-09-17 DOI: 10.1016/j.compstruct.2025.119671

Manish Kumar Sharma , Diwakar Singh , Reeta Chauhan , Rajeev Kumar , Vishal Singh Chauhan

{"title":"Multi-physics property evaluation and actuation response of first-order fractal-inspired photostrictive composites: a finite element analysis","authors":"Manish Kumar Sharma , Diwakar Singh , Reeta Chauhan , Rajeev Kumar , Vishal Singh Chauhan","doi":"10.1016/j.compstruct.2025.119671","DOIUrl":"10.1016/j.compstruct.2025.119671","url":null,"abstract":"<div><div>A photostrictive actuator helps the smart structure to be actuated wirelessly. Researchers are attempting to enhance its actuation response. This research article explores first-order fractal-inspired photostrictive 3–3 composites to enhance the actuation response of photostrictive actuators. The proposed structure has been considered and designed for enhanced multifunctional actuation. This configuration consists of piezoelectric PMN-35PT reinforcements and photovoltaic PTB7-Th as a matrix, enabling opto-electro-mechanical coupling. All effective material properties were evaluated using a representative volume element (RVE) approach for fiber aspect ratios (L/D = 2, 2.5, 3). Actuation performance was analyzed under 60 mW/cm<sup>2</sup> light irradiation using the finite element method. Maximum deflections for the cantilever beam decreased from −3.77 × 10<sup>−3</sup> m (L/D = 2) to −1.45 × 10<sup>−3</sup> m (L/D = 3), the simply supported beam 4.71 × 10<sup>−4</sup> m (L/D = 2) to 1.81 × 10<sup>−4</sup> m (L/D = 3), and clamped square plate shows 1.6 × 10<sup>−4</sup> m (L/D = 2) demonstrating the tunability of actuation response. To the best of our knowledge, this is the first demonstration of a photostrictive actuator based on a first-order fractal-inspired composites, modelled via fully-coupled multiphysics finite-element framework. This study highlights the potential of fractal-inspired photostrictive composites for applications in aerospace, robotics, and MEMS, where adaptive material performance is crucial.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119671"},"PeriodicalIF":7.1,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105812","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

Behaviors and load distribution of sleeved bolted joints between pultruded FRP box profiles with multi-directional fiber layups 多方向纤维层拉挤玻璃钢箱型间套筒螺栓连接性能及荷载分布

IF 7.1 2区材料科学

Composite Structures Pub Date : 2025-09-17 DOI: 10.1016/j.compstruct.2025.119673

Mengdie Liang , Xin Wang , Xinyan Yuan , João R. Correia , Zhishen Wu

{"title":"Behaviors and load distribution of sleeved bolted joints between pultruded FRP box profiles with multi-directional fiber layups","authors":"Mengdie Liang , Xin Wang , Xinyan Yuan , João R. Correia , Zhishen Wu","doi":"10.1016/j.compstruct.2025.119673","DOIUrl":"10.1016/j.compstruct.2025.119673","url":null,"abstract":"<div><div>Pultruded fiber-reinforced polymer (PFRP) composites have recently garnered significant attention for truss structures. However, the low connection efficiency and inherent brittleness of traditional PFRP profiles, with mostly unidirectional (UD) reinforcement, pose critical challenges that limit their structural applications. This study presents experimental and numerical investigations about the tensile performance of bolted sleeved joints between PFRP box profiles with multi-directional (MD) fiber layups, aiming to explore effective strategies for enhancing joint connection efficiency. The studied parameters included bolt layout, fiber layup, end distance and bolt spacing. Results indicate that the incorporation of MD fiber layups can improve the joint strength of the bolted sleeved joints by 90 %. Moreover, arranging the bolts to pass through all four walls of the box profile mitigated the uneven load distribution among bolts, thereby improving connection efficiency without requiring additional bolts or increased connection length compared to joints where bolts were arranged passing only through two walls. Increasing bolt spacing proved more effective in enhancing ultimate load than adjusting end distance. For engineering applications, it is recommended that bolt spacing exceeds five times the bolt diameter in order to guarantee pin-bearing failure.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119673"},"PeriodicalIF":7.1,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106445","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

Fine-scale model of concrete composite for long-term cycling transient loads incorporating nonlinear hardening and softening effects 考虑非线性硬化和软化效应的混凝土复合材料长期循环瞬态荷载的细尺度模型

IF 7.1 2区材料科学

Composite Structures Pub Date : 2025-09-17 DOI: 10.1016/j.compstruct.2025.119649

Himanshu Rana , Adnan Ibrahimbegovic

{"title":"Fine-scale model of concrete composite for long-term cycling transient loads incorporating nonlinear hardening and softening effects","authors":"Himanshu Rana , Adnan Ibrahimbegovic","doi":"10.1016/j.compstruct.2025.119649","DOIUrl":"10.1016/j.compstruct.2025.119649","url":null,"abstract":"<div><div>Concrete modeling under long-term cyclic transient loading has always been a challenging task due to the highly heterogeneous nature of the material. In this context, the present study proposes a fine-scale model of concrete by representing it as a two-phase material composed of aggregates and mortar. For this, the material domain is discretized into Voronoi cells connected by cohesive links using Delaunay triangulation, and an aggregate assignment algorithm is proposed to associate these links to either aggregates or mortar. Following this, the cohesive links representing mortar are modeled as 2D Timoshenko beam elements incorporating a distinct nonlinear kinematic hardening model along with isotropic softening model, separately in tension, compression, and shear. Softening in the material is introduced using the Embedded Discontinuity Finite Element Method (EDFEM) to model localized discontinuities. In contrast, the cohesive links associated with aggregates are modeled as elastic 2D Timoshenko beam elements. Lastly, compressive cyclic and three-point bending tests are performed on the concrete specimen, and the results are compared with experimental data reported in the literature, showing very good agreement with the experiments. Additionally, an active Bayesian Optimization (BO) procedure is performed to determine the optimal set of parameters for the three-point bending test by minimizing the Mean Squared Error (MSE) of energy between the present model and the experimental results.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119649"},"PeriodicalIF":7.1,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106442","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 low strain rate on the strength of CFRP laminates after hygrothermal exposure in seawater 低应变率对CFRP复合材料在海水中湿热暴露后强度的影响

IF 7.1 2区材料科学

Composite Structures Pub Date : 2025-09-17 DOI: 10.1016/j.compstruct.2025.119663

Haiwei Zhan , Jiayu Wu , Jian-Fei Chen

{"title":"Effect of low strain rate on the strength of CFRP laminates after hygrothermal exposure in seawater","authors":"Haiwei Zhan , Jiayu Wu , Jian-Fei Chen","doi":"10.1016/j.compstruct.2025.119663","DOIUrl":"10.1016/j.compstruct.2025.119663","url":null,"abstract":"<div><div>This paper presents a study on the effect of strain rate on the strength of carbon fiber reinforced polymer (CFRP) laminates after hygrothermal exposure in seawater at 60 °C. A ten-month water absorption test was conducted on CFRP immersed in 60 °C seawater, and its non-Fickian moisture uptake behavior was accurately modeled using a Weibull relaxation model optimized by particle swarm optimization (PSO). Tensile tests were conducted on CFRP specimens subjected to varying seawater aging durations (0, 35, 70, and 105 days) at different strain rates (from 10<sup>−7</sup> to 10<sup>−3</sup> s<sup>−1</sup>). The experimental results indicate that the strength of CFRP increases with an increase in strain rate, regardless of whether the material has undergone seawater aging. It decreases with aging time until reaching water absorption saturation across all test strain rates, but increases slightly after saturation. A two-way analysis of variance (ANOVA) was innovatively applied to assess the interaction effects of strain rate and aging time on CFRP strength. The results confirmed that both factors are statistically independent, offering a novel and quantitative perspective on the mechanical-environmental coupling effects. Finally, an empirical model is developed to represent the strengths of CFRP at different strain rates following hygrothermal exposure.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119663"},"PeriodicalIF":7.1,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155288","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

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