【新文速递】2026年5月25日复合材料SCI期刊最新文章

今日更新：International Journal of Solids and Structures 4 篇，Thin-Walled Structures 4 篇International Journal of Solids and StructuresComputational an alysis of fracture and fatigue in overmolded thermoplastic composites: Time-homogenized viscoplasticity, cohesive fracture and processing effectsP. Hofman, F.P. van der Meer, L.J. Sluysdoi:10.1016/j.ijsolstr.2026.114092复模热塑性复合材料断裂和疲劳计算分析：时间均质粘塑性、内聚断裂和加工效应A numerical framework is presented for simulating fracture and fatigue in a T-section, cut from an overmolded thermoplastic composite panel made of CF/PEEK. The framework combines a cohesive zone model for the overmolded interface with an anisotropic viscoplasticity model for the laminate and accounts for processing effects. For high-cycle fatigue an alyses, a two-scale time-homogenized version of the viscoplasticity model is derived. The numerical framework is applied to the an alysis of a rib pull-off test and is used to gain insights into the influence on the short- and long-term response of two typical processing effects: out-of-plane deformations of the laminate that occur during thermoforming and non-uniform healing profiles resulting from spatially varying thermal histories. Furthermore, the effects of various modeling assumptions are studied, such as modeling the local fiber orientations of each ply in the laminate with a mesoscopic ply-by-ply approach, the effect of viscoplastic deformations in the laminate, the influence of non-uniform local stress ratios, and the effect of the boundary conditions. The an alyses demonstrate that the framework is capable of efficiently simulating a large number of cycles. The simulation results show that the local wrinkles in the laminate as a result of thermoforming have a significant effect on the mechanical response, especially under cyclic loading. Moreover, accounting for viscoplastic deformations appears more important when high degrees of bonding of the overmolded interface are achieved. Finally, it is shown that changes to the boundary conditions have a significant effect on the short and long-term response of the T-section, challenging the validity of the test for characterizing fracture and fatigue properties of the overmolded interface.提出了一种用于模拟CF/PEEK复合材料t形截面断裂和疲劳的数值框架。该框架结合了覆盖界面的内聚区模型和层压材料的各向异性粘塑性模型，并考虑了加工效应。对于高周疲劳分析，导出了粘塑性模型的双尺度时间均匀化版本。数值框架应用于肋条拉断试验的分析，并用于深入了解两种典型加工效应对短期和长期响应的影响：热成型过程中层压板的面外变形和由空间变化的热历史引起的不均匀愈合剖面。此外，还研究了各种建模假设的影响，例如用细观一层一层的方法模拟层合板中每层的局部纤维取向，层合板中粘塑性变形的影响，非均匀局部应力比的影响以及边界条件的影响。分析表明，该框架能够有效地模拟大量的循环。仿真结果表明，热成形过程中产生的局部起皱对复合材料的力学响应有显著影响，尤其是在循环载荷作用下。此外，考虑粘塑性变形显得更加重要，当覆盖界面的高度结合实现。最后，研究表明，边界条件的变化对t形截面的短期和长期响应都有显著影响，这对表征覆压界面断裂和疲劳特性的试验有效性提出了挑战。Numerical modeling of the nonlinear structural response of helically structured strands using a microscale informed Bouc–Wen model applied to helicoidal strands and submarine power cablesLara Zeidan, Patrice Cartraud, Gilles Marckmann, Laurent Stainierdoi:10.1016/j.ijsolstr.2026.114089基于微尺度信息Bouc-Wen模型的螺旋链非线性结构响应数值模拟，应用于螺旋链和海底电力电缆Helical beam-like structures subjected to combined axial tension and bending may exhibit a nonlinear response due to interlayer contact and friction between their components. A sequential multiscale strategy is proposed to represent this path-dependent behavior with reduced computational cost. Homogenized moment–curvature responses are obtained from a representative volume element under bending at different axial extension levels, revealing tension-dependent hysteresis and threshold bending moments. These results are used to calibrate a uniaxial Bouc–Wen law, which is implemented within a Bernoulli beam finite element formulation to simulate the global structural response. The methodology is first described for helicoidal strands and validated through comparison with detailed finite element simulations. It is then applied to a full-scale dynamic submarine power cable and compared with experimental measurements. The numerical and experimental results demonstrate that the proposed Bouc–Wen beam formulation provides an accurate and computationally efficient approach for nonlinear structural a nalysis.螺旋梁状结构在轴向拉伸和弯曲的联合作用下，由于层间接触和构件之间的摩擦，可能表现出非线性响应。提出了一种序列多尺度策略来表示这种路径依赖行为，减少了计算成本。在不同的轴向拉伸水平下，获得了具有代表性的体积单元在弯曲作用下的均匀弯矩-曲率响应，揭示了张力相关的滞后和阈值弯矩。这些结果用于校准单轴Bouc-Wen定律，该定律在伯努利梁有限元公式中实现，以模拟整体结构响应。该方法首先描述了螺旋链，并通过详细的有限元模拟比较验证。然后将其应用于全尺寸海底动力电缆，并与实验测量结果进行了比较。数值和实验结果表明，所提出的Bouc-Wen梁公式为非线性结构分析提供了一种精确且计算效率高的方法。Multiscale modelling of non-centrosymmetric nested lattice-like materials via high-frequency continualizationDeison Preve, Vito Diana, Andrea Bacigalupodoi:10.1016/j.ijsolstr.2026.114083基于高频连续化的非中心对称嵌套晶格类材料多尺度建模This study proposes an enhanced continualization framework through which non-centrosymmetric generalized micropolar continua are systematically identified from the underlying discrete microstructure, enabling an accurate description of periodic architected materials beyond standard elasticity. Within this setting, a hierarchical non-centrosymmetric lattice is mapped onto integral-type micropolar continuum models whose dispersion-band structure coincides with that of the underlying discrete Lagrangian system, and which are asymptotically approximated by non-local, gradient-type generalized micropolar continua of increasing order endowed with non-local inertia terms. Focusing in particular on first-order micropolar continua (i.e., Cosserat-type solids), the overall constitutive tensors are identified through a variational projection-based procedure that maps discrete kinematic descriptors onto continuum kinematic fields, ensuring full energetic equivalence between the discrete and continuum counterparts. The framework is applied to two prototypical non-centrosymmetric lattice-like microstructures: a square lattice with non-uniform ligament cross-sections, and a nested block lattice material with architected interfaces. In both cases, the reference models are formulated within a discrete Lagrangian setting and exhibit non-vanishing stress–curvature (or equivalently, couple-stress–strain) coupling terms as a direct consequence of non-centrosymmetry. Bloch–Floquet dispersion an alyses are employed to assess the ability of the derived micropolar generalized continua to reproduce the spectral properties of the original discrete systems. The results highlight the role of non-centrosymmetry and shear–bending interactions in generating anisotropic and non-reciprocal wave propagation phenomena, and demonstrate that the proposed framework accurately captures the dispersion behaviour of non-centrosymmetric lattices. More generally, the approach provides a systematic pathway for the construction of higher-order, hierarchical, and non-local generalized continuum models with controlled spectral fidelity.本研究提出了一个增强的连续化框架，通过该框架，非中心对称的广义微极连续体可以从潜在的离散微观结构中系统地识别出来，从而能够准确描述超出标准弹性的周期性结构材料。在这种情况下，一个分层的非中心对称晶格被映射到积分型微极连续体模型上，该模型的色散带结构与底层的离散拉格朗日系统的色散带结构一致，并被赋予非局部惯性项的非局部梯度型广义微极连续体渐进逼近。特别关注一阶微极连续体（即cosserat型固体），通过基于变分投影的程序识别总体本构张量，该程序将离散运动学描述符映射到连续体运动学场，确保离散和连续体对应体之间的完全能量等效。该框架应用于两种典型的非中心对称晶格状微结构：具有非均匀韧带横截面的方形晶格，以及具有架构界面的嵌套块晶格材料。在这两种情况下，参考模型都是在离散拉格朗日环境中制定的，并且作为非中心对称的直接结果，表现出非消失的应力-曲率（或等效的，耦合应力-应变）耦合项。采用Bloch-Floquet色散分析来评估导出的微极广义连续体再现原始离散系统的光谱特性的能力。结果强调了非中心对称和剪切弯曲相互作用在产生各向异性和非互反波传播现象中的作用，并证明了所提出的框架准确地捕获了非中心对称晶格的色散行为。更一般地说，该方法为构建具有可控谱保真度的高阶、分层和非局部广义连续体模型提供了系统的途径。On the influence of thickness, stiffness, and soft interfaces in heterogeneous multilayered structuresY. Xiao, N. Fani, F. Tavangarian, C. Pecodoi:10.1016/j.ijsolstr.2026.114090厚度、刚度和软界面对非均质多层结构的影响This study examines the mechanical performance of spicule-inspired structures (SISs) modeled after the multilayered architecture of Euplectella aspergillum sponge spicules. Using finite element simulations validated by experiments on 3D-printed prototypes, we explore how variations in thickness distribution, modulus contrast, and the introduction of soft interfacial layers affect stress distribution, deformation, and energy absorption. Our results show that SISs with thinner outer layers and strategic modulus gradients—particularly those with stiff cores and soft outer layers—demonstrate enhanced flexibility, improved load transfer, and greater energy absorption compared to uniformly layered designs. The addition of soft, thin interfaces between layers further reduces stress concentrations, especially when interface modulus is tuned appropriately. These findings establish design principles that emphasize functional gradients and targeted material placement over simple layering, offering a framework for engineering lightweight, resilient structures for applications in aerospace, civil infrastructure, and bioinspired systems.本研究考察了以曲霉Euplectella aspergillum海绵针状体的多层结构为模型的针状启发结构（SISs）的力学性能。通过3d打印原型实验验证的有限元模拟，我们探索了厚度分布、模量对比和软界面层的引入如何影响应力分布、变形和能量吸收。我们的研究结果表明，与均匀分层设计相比，具有更薄外层和战略模量梯度的SISs，特别是具有硬芯和软外层的SISs，具有更高的灵活性，改善的负载传递和更大的能量吸收。在层间添加柔软、薄的界面进一步降低了应力集中，特别是当界面模量适当调整时。这些发现建立了强调功能梯度和有针对性的材料放置而不是简单分层的设计原则，为应用于航空航天、民用基础设施和生物启发系统的工程轻量化、弹性结构提供了框架。Thin-Walled StructuresHigh-Support Auxetic Magnesium Alloy Vascular Stents: Design and Femtosecond Laser Precision FabricationSen Zhang, Lingfei Ji, Huaqing Zhangdoi:10.1016/j.tws.2026.115156高支撑辅助镁合金血管支架：设计与飞秒激光精密制造Magnesium (Mg) alloy stents, as biodegradable vascular implants, provide temporary mechanical support while avoiding long-term complications associated with permanent devices. Their clinical application, however, is constrained by material and structural instability and the challenge of producing complex thin-walled structures with high fidelity. This study presents a femtosecond (fs) laser-based fabrication strategy integrating auxetic structural design with a geometric projection compensation algorithm to realize high-precision manufacturing of thin-walled Mg alloy stents. The fabricated stents exhibit negative Poisson’s ratio (NPR) deformation, effectively eliminating the typical dogboning effect and achieving highly uniform radial expansion. Compared with stents made from the same Mg alloy, the auxetic stents achieve an approximately 43% increase in radial strength and markedly reduced radial recoil, despite a ~20% reduction in wall thickness. Furthermore, a local moment conversion mechanism is revealed, optimizing the balance among lightweight design, radial support, and compliance. This work clarifies the processing-structure-performance relationship and provides guidance for the structural design and engineering of next-generation high-performance biodegradable vascular implants.镁（Mg）合金支架作为一种可生物降解的血管植入物，提供暂时的机械支持，同时避免了永久性支架相关的长期并发症。然而，它们的临床应用受到材料和结构不稳定性以及制作高保真复杂薄壁结构的挑战的限制。为实现薄壁镁合金支架的高精度制造，提出了一种飞秒激光制造策略，并结合几何投影补偿算法实现了辅助结构设计。制备的支架呈现负泊松比（NPR）变形，有效消除了典型的狗骨效应，实现了高度均匀的径向膨胀。与由相同镁合金制成的支架相比，尽管壁厚减少了约20%，但辅助支架的径向强度提高了约43%，径向后坐力显著降低。此外，揭示了一种局部力矩转换机制，优化了轻量化设计、径向支撑和顺应性之间的平衡。本研究阐明了加工-结构-性能的关系，为下一代高性能可生物降解血管植入物的结构设计和工程提供指导。Dynamic response and fire resistance of steel beam-column substructures with rib-stiffened top-and-seat double web angle connectionsZhi Li, Qing-long Mo, Quan Luo, Xi Landoi:10.1016/j.tws.2026.115155肋加筋顶座双腹板角连接钢梁柱下部结构的动力响应及耐火性能To evaluate the influence of rib stiffening on the progressive collapse resistance of beam-column substructures with top-and-seat double web angle (TSDWA) connections under fire, combined experimental and numerical studies were conducted. Sudden column removal tests first characterized the dynamic response, followed by fire tests under sustained gravity loads to evaluate structural performance at elevated temperatures. Based on validated finite element models, parametric an alyses investigated the effects of rib thickness and layout. The sudden column removal tests demonstrated that rib stiffening effectively mitigated dynamic amplification, reducing peak and residual mid-column displacements by 25.9% and 28.4%, respectively. Under heating, the stiffeners shifted the structural failure mode from tensile yielding of the angles and bolts to combined tension and shear failure of the bolts, which increased the temperature associated with rapid mid-column displacement by 132 °C and the fire resistance limit defined by Chinese standards by 50 °C. Furthermore, the enhanced rotational restraint provided by the stiffeners increased the maximum bending moment by 11.2%, thereby delaying the critical temperature by 82 °C. Parametric results indicated that increasing rib thickness enhanced the initial stiffness and delayed the development of large deformation, thereby reducing the peak mid-column displacement and increasing the critical and fire resistance temperatures. However, these improvements exhibited diminishing returns, and in this study, a thickness of 12mm was identified as the optimal threshold. Regarding layout, the symmetric arrangement provided superior fire resistance, whereas the bottom-only configuration was most effective in promoting catenary action.为评估肋层加劲对顶座双腹板角连接梁柱子结构在火灾作用下的抗连续倒塌能力的影响，进行了试验与数值相结合的研究。突然移柱试验首先表征了动态响应，然后是持续重力载荷下的火灾试验，以评估高温下的结构性能。在验证的有限元模型基础上，进行参数化分析，考察肋板厚度和布置的影响。突然移柱试验表明，肋层加劲有效地缓解了动力放大，峰值位移和残余中柱位移分别降低了25.9%和28.4%。在加热作用下，加强筋将结构破坏模式从角和螺栓的受拉屈服转变为螺栓的受拉和剪切联合破坏，使柱中快速位移相关温度升高132℃，使中国标准规定的耐火极限升高50℃。此外，加强筋提供的增强旋转约束使最大弯矩提高了11.2%，从而将临界温度推迟了82°C。参数化结果表明，肋厚的增加提高了初始刚度，延缓了大变形的发展，从而降低了柱中位移峰值，提高了临界温度和耐火温度。然而，这些改进表现出递减的回报，在本研究中，12mm的厚度被确定为最佳阈值。在布局上，对称布局具有较好的防火性能，而底部布局在促进接触网作用方面最为有效。Advanced finite element model for nonlinear response of thin perovskite solar cell plates under thermal conditionsHuy-Cuong Vu-Do, Duy-Khuong Ly, T. Nguyen-Thoi, Sy-Ngoc Nguyen, Nam-Vu Hodoi:10.1016/j.tws.2026.115129热条件下钙钛矿薄太阳能电池板非线性响应的先进有限元模型Perovskite solar cells (PSCs) offer exceptional photovoltaic efficiency but face significant mechanical durability challenges due to the stark stiffness mismatch between their constitutive layers. Accurate prediction of stress distributions under operating conditions is critical to mitigating failure modes such as cracking and delamination. This study establishes a numerical framework for the nonlinear an alysis of thin-film PSC structures subjected to dynamic pressure and thermal gradients. To address the limitations of conventional theories in modeling heterogeneous laminates, the present formulation couples the Refined Zigzag Theory (RZT) with the Cell-Based Smoothed Discrete Shear Gap method (CS-DSG3). Uniquely, the RZT kinematics capture the zigzag deformation of the through-thickness displacement field—a capability essential for reliably assessing the structural integrity of multilayered Perovskite assemblies. The integration of the CS-DSG3 technique further enhances the model by eliminating shear-locking phenomena and ensuring superior convergence rates. The framework accounts for geometric nonlinearities to simulate the large-deflection response under realistic environmental loading. Comprehensive benchmark studies demonstrate that the proposed framework offers a balance of computational efficiency and accuracy. Subsequently, extensive parametric investigations are conducted to elucidate the sensitivity of the PSC’s nonlinear response to key design variables, including layer thickness ratios, aspect ratios, and boundary conditions.钙钛矿太阳能电池（PSCs）提供了卓越的光伏效率，但由于其本构层之间的刚度不匹配，面临着重大的机械耐久性挑战。准确预测运行条件下的应力分布对于减轻开裂和分层等失效模式至关重要。本研究建立了动态压力和热梯度作用下薄膜PSC结构非线性分析的数值框架。为了解决传统理论在非均质层合板建模中的局限性，本文将精细化之字形理论（RZT）与基于单元的平滑离散剪切间隙方法（CS-DSG3）相结合。独特的是，RZT运动学捕获了贯穿厚度位移场的之字形变形，这是可靠评估多层钙钛矿组件结构完整性所必需的能力。CS-DSG3技术的集成通过消除剪切锁定现象和确保优越的收敛速度进一步增强了模型。该框架考虑几何非线性，以模拟实际环境荷载下的大挠度响应。综合基准研究表明，该框架在计算效率和精度上取得了平衡。随后，进行了广泛的参数研究，以阐明PSC非线性响应对关键设计变量的敏感性，包括层厚度比、纵横比和边界条件。Geometric Modulation and Dynamic Stability of Nonlinear Waves in Fluid-Filled Hyperelastic TubesYi Fei Zhang, Wei Zhang, Yu Fei Zhangdoi:10.1016/j.tws.2026.115051充液超弹性管内非线性波的几何调制与动力稳定性This paper investigates the evolution of solitons and periodic waves in fluid-filled geometrically non-uniform hyperelastic tubes. Based on the governing equations of fluid-structure interaction under initial pre-stress, a variable-coefficient Korteweg-de Vries (KdV) equation is derived and an alytically solved using the Jacobi elliptic function method. Theoretical an alysis establishes that the nonlinear characteristics of the hyperelastic material influence the wave velocity. Furthermore, numerical simulations of a water-filled rubber tube demonstrate that axial geometric non-uniformity induces wave deceleration and phase retardation relative to the linear wavefront. As the wave propagates, this modulation manifests as an apparent trajectory reversal, in contrast to the steady propagation of uniform tubes. Dynamic stability tests confirm that the exact solutions preserve their localized form and energy conservation under 15% Gaussian colored noise and time-varying geometric modulations. Parametric studies further indicate that wave velocity decreases with stretch ratio, initial radius, and fluid density, while increasing with wall thickness and tube material density. These results provide a theoretical basis for wave an alysis and vibration control in flexible pipeline systems.本文研究了几何非均匀充液超弹性管内孤子和周期波的演化。基于初始预应力作用下的流固耦合控制方程，推导了变系数Korteweg-de Vries （KdV）方程，并用Jacobi椭圆函数法对其进行了解析求解。理论分析证实了超弹性材料的非线性特性对波速的影响。此外，对充水橡胶管的数值模拟表明，轴向几何不均匀性会导致相对于线性波前的波减速和相位延迟。当波传播时，这种调制表现为明显的轨迹反转，与均匀管的稳定传播相反。动态稳定性试验证实，精确解在15%高斯彩色噪声和时变几何调制下保持了局部形式和能量守恒。参数化研究进一步表明，波速随拉伸比、初始半径和流体密度而减小，随管壁厚度和管材密度而增大。研究结果为柔性管道系统的波动分析和振动控制提供了理论依据。来源：复合材料力学仿真Composites FEM