Composite Structures最新文献_第9页

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 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures

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

Shubham Sharma, Ananth Ramaswamy

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.

本文提出了一种虚拟元法框架，将线性内聚元与最低阶虚拟元相结合，模拟复合材料结构中基体开裂与界面分层之间的相互作用。基于相场脆性断裂模型，采用虚拟元对矩阵域进行离散化，实现了裂纹扭结、弯曲和分支的精确表示。使用从基于势的内聚区模型导出的内聚元素对界面进行离散，以捕获混合模式分离。这种耦合离散处理沿界面的快速网格转换，并允许将包含物建模为具有大量边缘的单个多边形元素，提供显著的网格划分灵活性。我们通过数值实例验证了该框架，包括混合模式界面脱粘，矩阵开裂，界面上的裂纹渗透和挠曲以及界面上的裂纹扭结，并将结果与现有的数值和实验数据进行了比较。此外，我们展示了一种混合策略，其中虚拟元素用于离散包含体，而有限元用于离散3d打印超弹性矩阵域。然后利用这种混合离散化方法模拟了3d打印超弹性复合材料在脆性断裂前经历有限变形的多重裂纹形核和裂纹合并过程。VEM框架通过用户定义的元素在商业有限元软件ABAQUS （Standard）中实现，使先进的虚拟元素功能可以在工业标准平台中访问。因此，该方法为模拟具有复杂损伤机制的复合材料的脆性断裂提供了一种强大而灵活的工具。

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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 Q1 MATERIALS SCIENCE, COMPOSITES

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

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 [0₂/90₂]_4s, [0/90] _4s, and [0₂/90₂]_2s 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.

研究了冲击能量组合和铺层构型对碳纤维增强复合材料层合板在多重冲击下的残余压缩性能及破坏演化机制的影响。在四种不同的冲击能量水平下测试了冲击后压缩性能。设计了[02/902]4s、[0/90]4s和[02/902]2s铺层构型的层压板，研究了铺层方向、铺层厚度和铺层聚集效应的影响。使用c扫描技术表征撞击和压缩失败后的分层。结果表明，在多次冲击下，较晚发生的高能量冲击导致总能量吸收较大，分层面积较大，导致残余抗压强度较低。冲击能量分布均匀，残余抗压性能最高。与交叉层压板相比，准各向同性层压板在重复冲击后表现出更高的残余抗压强度。使用较薄的层数和增加交错层数可以提高复合材料在反复冲击下的残余压缩性能。本研究提供了冲击能量排序对损伤进展的影响，并揭示了其对复合材料层合板残余压缩行为的影响。

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引用次数: 0

Steering for in-situ AFP-manufactured structures: Part 1 - Critical arc length 原位afp制造结构的转向。第1部分：临界弧长

IF 7.1 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures

Pub Date : 2026-04-01 Epub Date: 2026-01-09 DOI: 10.1016/j.compstruct.2025.120023

Lukas Raps, Ashley R. Chadwick, Heinz F. Voggenreiter

Automated Fiber Placement (AFP) of thermoplastic composites offers a pathway to efficient, Out-of-Autoclave (OoA) manufacturing of large aerospace structures. This work investigates the in-plane path curvature (steering) required for double-curved geometries and the following transient steering effects and defect formation. A novel “critical arc length” concept is introduced to define the limits of viable steered layup paths. Results demonstrate that sub-critical steering radii do not significantly impact interlaminar shear or bending strength, though a minor reduction in bending modulus is observed near the critical arc length, likely attributable to increased fiber waviness. These findings expand the design space for steered thermoplastic composite structures.

热塑性复合材料的自动纤维放置（AFP）为大型航空航天结构的高效、非高压灭菌（OoA）制造提供了一条途径。这项工作研究了双曲线几何所需的平面内路径曲率（转向）以及以下瞬态转向效应和缺陷形成。引入了一种新的“临界弧长”概念来定义可行的定向上铺路径的极限。结果表明，亚临界转向半径对层间剪切或弯曲强度没有显著影响，但在临界弧长附近观察到弯曲模量略有下降，这可能归因于纤维波纹度的增加。这些发现扩大了导向热塑性复合材料结构的设计空间。

引用次数: 0

Predicting failure in injection-moulded short-fibre components through fracture mechanics and fractographic validation 通过断裂力学和断口学验证预测注射成型短纤维部件的失效

IF 7.1 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures

Pub Date : 2026-04-01 Epub Date: 2026-01-08 DOI: 10.1016/j.compstruct.2026.120053

Yuki Fujita , Wisely Yeung , Shunta Kimura , Satoshi Noda , Junichi Takahashi , Emile S. Greenhalgh , Soraia Pimenta

Injection-moulded short-fibre composites are lightweight materials suitable for high-volume applications. When designing components, it is necessary to predict their ultimate load-bearing capability using Finite Element simulations. However, current methods (based on initiation failure criteria) to simulate components using these materials cannot yet accurately predict ultimate failure. This work applies a newly developed methodology – using a Cohesive Zone Modelling (CZM) to account for the material’s finite toughness – to predict failure of injection-moulded short-glass-fibre reinforced thermoplastic (IM-SFRP) components, based on experimentally measured properties at coupon level. An automotive component, selected from realistic applications in the automotive industry, was tested under quasi-static conditions, and fracture occurred either (i) around the loading area, or (ii) at a weldline. FE simulations of the components, coupled with fibre orientation fields predicted by an injection-moulding process simulation, combined with CZM, were conducted; this used properties measured using dogbone-coupon tensile tests and compact tension tests. These coupled simulations presented excellent agreement with the experimental results in terms of both (a) the peak load (within 2.3% error), and (b) the post-peak sequence of failure events (verified using fractographic analyses). The methodology used in this research can be used to confidently design safer and more efficient IM-SFRP components.

注射成型短纤维复合材料是一种轻质材料，适合大批量应用。在设计构件时，有必要利用有限元模拟对构件的极限承载能力进行预测。然而，目前使用这些材料模拟部件的方法（基于起始失效准则）还不能准确预测最终失效。这项工作应用了一种新开发的方法-使用内聚区建模（CZM）来解释材料的有限韧性-根据实验测量的材料性能来预测注射成型短玻璃纤维增强热塑性塑料（IM-SFRP）部件的失效。从汽车工业的实际应用中选择一个汽车部件，在准静态条件下进行测试，断裂发生在(i)加载区周围或（ii）焊接线上。对零件进行了有限元模拟，结合注射成型过程模拟预测的纤维取向场，结合CZM进行了有限元模拟；该方法使用狗骨接头拉伸试验和致密拉伸试验来测量性能。这些耦合模拟在(a)峰值载荷（误差在2.3%以内）和(b)峰后失效事件序列（通过断口分析验证）方面与实验结果非常吻合。本研究中使用的方法可用于自信地设计更安全，更有效的IM-SFRP组件。

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引用次数: 0

A novel numerical method for finite difference modeling of FRP-concrete interfacial behavior and applications frp -混凝土界面特性有限差分数值模拟新方法及其应用

IF 7.1 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures

Pub Date : 2026-04-01 Epub Date: 2025-12-31 DOI: 10.1016/j.compstruct.2025.120018

Mingrui Teng , Peng Feng , Hongwei Lin , Peizhao Zhou , Daobo Zhang

The interface between fiber reinforced polymer (FRP) and concrete is a cornerstone in the strengthening of structures. Numerical methods such as finite difference modeling can efficiently obtain the mechanical behavior from local bond–slip model. However, existing methods struggle to capture full range load–displacement curves and to maintain both precision and computational efficiency. This paper presents a novel numerical method integrating the high order Runge–Kutta method and flexible boundary condition applications. This method can quickly generate high-precision bond-slip distributions and full range load–displacement curves including snap-back phenomenon. Comparisons with analytical solutions of diverse bond–slip models and experimental results validate the accuracy of this method. Further applying this method to laterally confined interfaces—an insufficiently researched domain lacking analytical solutions—a parametric analysis was conducted to elucidate the mechanical behavior. The classic concept of effective bond length (L_eff) is discussed and found inapplicable due to residual bond stress. The proposed method and revealed patterns proposed in this paper can provide an in-depth understanding for interface employing complex bond-slip models and advance the research of various novel models.

纤维增强聚合物（FRP）与混凝土之间的界面是结构加固的基石。有限差分建模等数值方法可以有效地从局部黏结滑移模型中获得力学行为。然而，现有的方法很难捕获全范围的载荷-位移曲线，并保持精度和计算效率。本文提出了一种结合高阶龙格-库塔法和柔性边界条件应用的数值计算方法。该方法可以快速生成高精度的粘结滑移分布和包含弹回现象的全范围载荷-位移曲线。通过与各种粘结滑移模型的解析解和实验结果的比较，验证了该方法的准确性。进一步将该方法应用于横向受限界面，这是一个缺乏解析解的研究不足的领域，进行了参数分析以阐明力学行为。讨论了有效键长（Leff）的经典概念，发现由于残余键应力而不适用。本文提出的方法和揭示的模式可以为采用复杂黏结滑移模型的界面提供深入的理解，并推动各种新模型的研究。

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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 Q1 MATERIALS SCIENCE, COMPOSITES

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

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.

纤维增强聚合物（FRP）棒已被广泛应用于混凝土结构的内部加固，然而，传统的拉挤制造工艺存在局限，包括对模具的依赖和材料的浪费。为了解决这些问题，作者最近开发了一种基于增材制造的3d打印FRP （3d -FRP）钢筋的创新形式。在本研究中，开发了一种新型的3d - frp筋表面处理方法，采用锯齿形截面和砂涂层来提高钢筋与混凝土的界面结合性能。共进行了33次拔出试验，系统地研究了表面处理方法、混凝土强度、锚固长度和杆径对3d - frp筋在混凝土中的粘结行为的影响。结果表明：未经处理的3d - frp筋的粘结强度（沿粘结长度的最大平均剪应力）可达7.3 MPa，明显超过光滑拉伸筋；粘结强度随混凝土强度的增大而增大，但随锚固长度或锚杆直径的增大而减小。螺旋缠绕和粗砂涂层（HWCS）的棒材表现出最高的结合强度。验证了改进的BPE （mBPE）模型在3d - frp筋粘结滑移表征中的适用性，并提出了一种新的粘结强度预测方程。

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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 Q1 MATERIALS SCIENCE, COMPOSITES

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

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 (R² > 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.

在金属基复合材料中，扭曲双层石墨烯（TBG）优于单层石墨烯（SLG）的力学性能尚未得到进一步研究。一个全面的多尺度框架，从原子建模到功能结构，突出了TBG作为应用于航空航天和电气领域的下一代复合材料的优越增强材料。本文首先系统地研究了任意扭转角TBG在铝基体中的增强效果。综合多尺度框架验证了分子动力学（MD）模拟、遗传规划（GP）算法和振动分析相结合的TBG优越的强度。首先，选择21个扭转角度，从纳米尺度上研究TBG的强度，验证其与SLG的力学性能的可比性。此外，还对TBG/Al复合材料的力学性能进行了5个体积分数和21个扭转角的评估，并在微观尺度上对SLG/Al复合材料进行了比较。采用遗传规划（GP）算法对Halpin-Tsai微力学模型进行了高精度修正（R2 > 0.9），以桥接宏微观力学响应。在复合材料中，TBG的增强效果比SLG强2 ~ 10%，特别是在高体积分数时。最后，建立了功能梯度TBG增强Al基（FG-TBG/Al）复合材料板，分析了不同边界条件和几何参数下的自由和非线性振动。与FG-SLG/Al复合材料相比，FG-TBG/Al复合材料在不同体积分数下的力学性能显著提高了2% ~ 30%。

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引用次数: 0

Local buckling, post-buckling and failure of pultruded GFRP I-section columns with narrow and wide flanges 窄法兰和宽法兰拉挤GFRP工字截面柱的局部屈曲、后屈曲和破坏

IF 7.1 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures

Pub Date : 2026-04-01 Epub Date: 2026-01-14 DOI: 10.1016/j.compstruct.2026.120069

João Alfredo Lazzari , João Ramôa Correia , Nuno Silvestre

This study examines the local buckling (LB) behaviour of pultruded glass fibre-reinforced polymer (pGFRP) I-section columns through experimental, computational and design-based approaches. The experimental program targeted compact to slender wide- and narrow-flange I-section columns to clearly capture LB modes. Digital Image Correlation (DIC) was used to monitor strains and out-of-plane displacements during the post-critical phase up to failure. Prior to testing, high-precision geometric imperfection (GI) measurements were obtained using a 3D Coordinate Measuring Machine (CMM). Material properties were characterized through coupon and full-section compression tests. Experimental critical buckling loads were estimated using the P–w² method and compared with analytical and computational predictions obtained from linear bifurcation analyses performed with both finite element (FEM) and finite strip (FSM) models. A shell-based FEM model incorporating Hashin’s failure criteria—including damage propagation via fracture energies—and measured initial GIs was developed to assess post-buckling behaviour. Results demonstrate a significant post-buckling strength reserve in slender pGFRP columns, up to 85%. Current design standards are found to be overly conservative in estimating their ultimate capacity under LB-driven failure (up to 370%). The study identifies possible sources of uncertainty that affect the computational and analytical predictions, including: (i) subjectivity in experimental determination of critical load, (ii) material property variability, and (iii) limitations of homogenized models—both, computational and analytical—in capturing complex material characteristics.

本研究通过实验、计算和基于设计的方法研究了拉挤玻璃纤维增强聚合物（pGFRP） i型截面柱的局部屈曲（LB）行为。实验程序的目标是紧凑的细长的宽法兰和窄法兰i型柱，以清楚地捕捉LB模式。数字图像相关（DIC）被用来监测应变和面外位移在临界后阶段直到破坏。在测试之前，使用三维坐标测量机（CMM）获得高精度几何缺陷（GI）测量。通过试件和全截面压缩试验对材料性能进行了表征。实验临界屈曲载荷采用P-w2方法估计，并与有限元（FEM）和有限条（FSM）模型线性分岔分析的解析和计算预测结果进行了比较。基于壳的有限元模型结合Hashin的破坏准则（包括通过断裂能量的损伤扩展）和测量的初始GIs来评估屈曲后的行为。结果表明，在细长的pGFRP柱屈曲后的强度储备显著，高达85%。目前的设计标准在估计lb驱动故障下的极限承载力（高达370%）时过于保守。该研究确定了影响计算和分析预测的可能的不确定性来源，包括：(i)临界载荷实验确定中的主观性，（ii）材料特性可变性，以及（iii）均质模型（计算和分析）在捕获复杂材料特性方面的局限性。

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引用次数: 0

An analytical framework to predict the 3D stress field in pressurised, thick-walled composite shells of revolution 一种预测旋转厚壁复合材料受压壳体三维应力场的分析框架

IF 7.1 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures

Pub Date : 2026-04-01 Epub Date: 2026-01-17 DOI: 10.1016/j.compstruct.2026.120059

Marie Hondekyn , Matteo Pastrello , Nazim Ali , Wim Van Paepegem

Pressurised composite shells of revolution are widely employed in engineering applications, where increasingly demanding loading conditions have led to the use of larger composite thicknesses. At higher thickness-to-radius ratios, their mechanical response deviates from that of thinner structures, necessitating more advanced analytical methods beyond classical shell theories. This study presents a 3D elasticity-based analytical model for the mechanical analysis of pressurised, thick-walled composite shells of revolution with arbitrary geometry. Special attention is given to manufacturing-related features by including the variations in fibre volume fraction, winding angle, and material properties into the governing equations. An exact solution to these equations is presented for quasi-isotropic spheres under uniform pressure, while the more complex case of an axisymmetric shell with arbitrary geometry and lay-up is solved using the finite difference method. The correctness of both methods is investigated by comparing various case studies to finite element simulations. The results obtained by both the exact and the finite difference solution exhibit close agreement with the simulations, while reducing the computation time by factors of 100,000 and 1,000, respectively. As such, our analytical framework enables an efficient and accurate identification of the critical regions, making it well-suited for design optimisation studies involving numerous parameter iterations.

旋转增压复合材料壳体在工程应用中得到了广泛的应用，其中越来越苛刻的加载条件导致使用更大的复合材料厚度。在较高的厚度-半径比下，它们的力学响应与较薄结构的力学响应不同，这就需要在经典壳理论之外采用更先进的分析方法。本研究提出了一种基于三维弹性的分析模型，用于任意几何形状的受压、厚壁旋转复合材料壳体的力学分析。通过将纤维体积分数、缠绕角和材料性能的变化纳入控制方程，特别关注与制造相关的特征。对于均匀压力下的准各向同性球，给出了这些方程的精确解，而对于具有任意几何形状和铺层的轴对称壳，则采用有限差分法求解了更为复杂的情况。通过比较不同的实例与有限元模拟，验证了两种方法的正确性。精确解和有限差分解的计算结果与模拟结果非常吻合，计算时间分别减少了10万倍和1000倍。因此，我们的分析框架能够有效和准确地识别关键区域，使其非常适合涉及众多参数迭代的设计优化研究。

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引用次数: 0

Multi-objective optimization of curing process for thick-section thermosetting composites 厚截面热固性复合材料固化工艺的多目标优化

IF 7.1 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures

Pub Date : 2026-04-01 Epub Date: 2026-01-14 DOI: 10.1016/j.compstruct.2026.120067

Wenjie Liu , Xin Fu , Yukun Li , Ning Guo , Mi Xu , Anxin Ding

To mitigate excessive peak temperatures, enhance cure uniformity, and reduce curing time for AS4/8552 composite laminates with different thicknesses, this study proposes a multi-objective curing process optimization framework. The methodology integrates high-fidelity finite element thermo-chemical simulations with a surrogate-assisted approach, coupling Gaussian process regression (trained on automated finite element datasets) and the non-dominated sorting genetic algorithm II. Global sensitivity analysis further identifies critical process parameters. The results reveal a pronounced non-linear relationship between process parameters and thermal response, amplified by the increased thickness. Furthermore, effective mitigation of temperature overshoot requires increasing first stage hold temperatures while reducing second stage heating rate, despite optimal parameters being thickness-dependent. Compared to the manufacturer’s recommended cure cycle, the optimized cure cycle achieves notable improvements for 12 mm, 18 mm, and 24 mm thick laminates. Curing time is reduced by 9.4%, 17.3%, and 17.7%, respectively, with concurrent decreases in peak temperature of 6.4%, 9.3%, and 10.5%. The maximum differences in degree of cure are also reduced by 53.8%, 54.5%, and 72.6% for the corresponding thicknesses, demonstrating enhanced process uniformity.

为了减少不同厚度AS4/8552复合材料层合板的峰值温度过高，提高固化均匀性，缩短固化时间，本研究提出了一种多目标固化工艺优化框架。该方法将高保真有限元热化学模拟与代理辅助方法相结合，耦合高斯过程回归（在自动化有限元数据集上训练）和非主导排序遗传算法II。全局敏感性分析进一步确定关键工艺参数。结果表明，工艺参数和热响应之间存在明显的非线性关系，随着厚度的增加，这种关系被放大。此外，尽管最佳参数与厚度有关，但有效缓解温度超调需要提高第一级保温温度，同时降低第二级加热速率。与制造商推荐的固化周期相比，优化的固化周期对12mm， 18mm和24mm厚的层压板实现了显着改善。固化时间分别缩短了9.4%、17.3%和17.7%，峰值温度同时降低了6.4%、9.3%和10.5%。在相应厚度下，固化程度的最大差异也分别减少了53.8%、54.5%和72.6%，表明工艺均匀性增强。

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引用次数: 0