【新文速递】2026年5月7日固体力学SCI期刊最新文章_ACT_Mechanical_System_Deform

【新文速递】2026年4月26日复合材料SCI期刊最新文章

今日更新：Composite Structures 2 篇，Composites Part B: Engineering 1 篇，Composites Science and Technology 1 篇Composite StructuresRve-based isogeometric an alysis of thermo-electro-mechanical band gaps in piezoelectric composite phononic crystalsHe Zhu, Liming Zhou, Xiaolin Lidoi:10.1016/j.compstruct.2026.120392压电复合声子晶体中热-电-机械带隙的等几何分析Piezoelectric composite phononic crystals provide tunable attenuation of elastic waves, but accurate band gap prediction remains difficult because of thermo-electro-mechanical coupling and multiscale heterogeneity. This work develops representative volume element-based thermo-electro-mechanical isogeometric an alysis (RVE-TEMIGA) for multiscale band gap an alysis of piezoelectric composite phononic crystals. At the microscale, a 1–3 piezoelectric composite is homogenized using an RVE with periodic boundary conditions, coupled thermo-electro-mechanical constitutive relations, and isogeometric a nalysis to obtain effective properties. At the macroscale, the homogenized properties are introduced into a dynamic isogeometric formulation, and frequency domain trans missibility an alysis is used to identify band gap behavior in finite structures. Two- and three-dimensional examples verify the accuracy and efficiency of the proposed method. Compared with the finite element method, RVE-TEMIGA achieves higher accuracy in free vibration ana lysis. Under comparable degrees of freedom, the proposed method predicts band gap locations and widths more accurately and maintains high accuracy for curved boundaries and high frequency responses. Temperature alters band gap location and width, whereas increasing fiber volume fraction broadens the band gaps. These results indicate that RVE-TEMIGA is an accurate and efficient multiscale approach for the design and ana lysis of piezoelectric composite phononic crystals under thermo-electro-mechanical coupling.压电复合声子晶体具有可调的弹性波衰减特性，但由于热-电-机械耦合和多尺度非均质性的存在，难以准确预测其带隙。本工作发展了具有代表性的基于体积元的热机电等几何分析（RVE-TEMIGA），用于压电复合声子晶体的多尺度带隙分析。在微观尺度上，采用周期边界条件下的RVE、热-电-力耦合本构关系和等几何分析对1-3压电复合材料进行均匀化，获得有效性能。在宏观尺度上，将均匀化性质引入到动态等几何公式中，并利用频域透射率分析来识别有限结构中的带隙行为。二维和三维算例验证了该方法的准确性和有效性。与有限元法相比，RVE-TEMIGA法在自由振动分析中具有更高的精度。在可比较的自由度下，该方法能更准确地预测带隙位置和宽度，并对弯曲边界和高频响应保持较高的精度。温度改变带隙的位置和宽度，而增加纤维体积分数使带隙变宽。这些结果表明，RVE-TEMIGA是一种精确、高效的多尺度热-电-力耦合下压电复合声子晶体设计与分析方法。Additive manufacturing of epoxy nanocomposites with Liquid/Solid Dual-Phase architecture for superior mechanical robustness and EMI shieldingTao Zhang, Zhichen Yan, Peng Chen, Chenxi Hua, Junfeng Wang, Yusong Deng, Zhenyu Wangdoi:10.1016/j.compstruct.2026.120374液体/固体双相结构环氧纳米复合材料的增材制造，具有卓越的机械稳健性和电磁干扰屏蔽The development of epoxy nanocomposites that simultaneously achieve superior mechanical and functional properties presents a longstanding challenge due to inherent material trade-offs in conventional filler-matrix systems. Here, we propose a liquid/solid dual-phase nanocomposite fabricated through one-step additive manufacturing. The material features a unique architectural design, combining a mechanically robust SiO2/epoxy lattice (solid-phase) with a conductive Ketjen black/epoxy slurry (liquid-phase). This distinctive configuration successfully decouples mechanical reinforcement from functional performance, enabling independent optimization of each component. The resulting composite exhibits exceptional mechanical properties, including 86% impact energy absorption and significantly enhanced fracture resistance through synergistic toughening mechanis ms. Remarkably, without compromising these mechanical advantages, the material achieves outstanding functional performance, demonstrating 38 dB electromagnetic interference shielding effectiveness in the X-band frequency range. This work establishes a versatile platform for designing next-generation multifunctional epoxy nanocomposites, offering precise property control to meet demanding engineering applications that require optimal structural integrity alongside multifunctional capabilities.由于传统填料-基体体系中固有的材料权衡问题，环氧纳米复合材料的发展面临着长期的挑战，因为它同时具有优异的机械和功能性能。在这里，我们提出了一种通过一步增材制造制备的液/固两相纳米复合材料。该材料具有独特的结构设计，结合了机械坚固的SiO2/环氧晶格（固相）和导电的Ketjen黑色/环氧浆料（液相）。这种独特的结构成功地将机械加固与功能性能分离开来，实现了每个组件的独立优化。由此产生的复合材料具有优异的力学性能，包括86%的冲击能量吸收和通过协同增韧机制显著增强的抗断裂性能。值得注意的是，在不影响这些机械优势的情况下，该材料实现了出色的功能性能，在x波段频率范围内显示出38 dB的电磁干扰屏蔽效果。这项工作为设计下一代多功能环氧纳米复合材料建立了一个通用平台，提供精确的性能控制，以满足苛刻的工程应用，需要最佳的结构完整性和多功能能力。Composites Part B: EngineeringBilayer Graded BaTiO3 Nanofiber-Doped Polyethersulfone Dielectric Composite for Enhanced Energy Storage PerformanceYue Zhang, Yi Qiao, Shaohua Wang, Xu Zhu, Yinhua Zhou, Huajie Yi, Changhai Zhang, Yongquan Zhang, Tiandong Zhangdoi:10.1016/j.composites b.2026.113720 增强储能性能的双层梯度BaTiO3纳米纤维掺杂聚醚砜介电复合材料To address the growing demand for dielectric capacitors with high energy storage density in pulsed power applications and high-power electronic devices, polymer-based composite dielectrics have received extensive attention. A widely adopted approach is the incorporation of high-permittivity fillers to enhance the dielectric constant of polymer matrices. However, the introduction of such fillers typically leads to localized electric-field distortion and interfacial imperfections, which substantially reduce the breakdown strength and thus constrain further improvements in energy storage performance. Overcoming this inherent trade-off between dielectric permittivity and breakdown reliability remains a critical challenge. In this work, a composite dielectric design strategy is proposed. The proposed strategy combines BaTiO3 (BT) nanofiber incorporation with a bilayer graded structure to achieve a synergistic improvement in dielectric response while maintaining high energy storage efficiency. Experimental results show that the bilayer graded composite with a pure polyethersulfone (PESU) layer and a 10 wt.% BT-PESU composite layer (0/10-BT-PESU) exhibits an optimal discharged energy density (U e) of 7.6 J/cm3, approximately 3.17 times that of pure PESU film (2.4 J/cm3), with charge-discharge efficiency (η) of all samples exceeding 90% across all samples. Phase-field simulations further reveal that the gradient architecture effectively suppresses electric-field distortion in the vicinity of the fillers by redistributing the applied voltage and introducing an interfacial barrier, thereby inhibiting the initiation and growth of electrical treeing. Overall, the bilayer graded configuration incorporating BaTiO3 nanofibers provides an effective pathway for optimizing the energy storage performance of polymer-based dielectric composites for capacitor applications.为了满足脉冲功率应用和大功率电子器件对高能量存储密度介质电容器日益增长的需求，聚合物基复合介质受到了广泛的关注。一种被广泛采用的方法是加入高介电常数填料来提高聚合物基体的介电常数。然而，这种填料的引入通常会导致局部电场畸变和界面缺陷，这大大降低了击穿强度，从而限制了储能性能的进一步提高。克服介电常数和击穿可靠性之间的这种固有权衡仍然是一个关键的挑战。本文提出了一种复合介质设计策略。该策略将BaTiO3 （BT）纳米纤维掺入与双层梯度结构相结合，在保持高储能效率的同时实现介电响应的协同改善。实验结果表明，由纯聚醚砜（PESU）和10 wt.% BT-PESU复合层（0/10-BT-PESU）组成的双层梯度复合材料的最佳放电能量密度（U e）为7.6 J/cm3，约为纯聚醚砜膜（2.4 J/cm3）的3.17倍，所有样品的充放电效率（η）均超过90%。相场模拟进一步表明，梯度结构通过重新分配外加电压和引入界面势垒有效地抑制了填料附近的电场畸变，从而抑制了电树的产生和生长。总之，结合BaTiO3纳米纤维的双层梯度结构为优化聚合物基介电复合材料的储能性能提供了有效途径。Composites Science and TechnologyCFRP-overwrapped additively-manufactured corrugated shells: Multi-material multi-manufacturing technique and multi-mechanis m failure an alysisCuiping Bai, Zhoupeng Li, Xiaoyu Qin, Hao Feng, Xueting Zhang, Hualin Fandoi:10.1016/j.compscitech.2026.111666 cfrp包覆增材制造波纹壳：多材料、多制造工艺及多机理失效分析A “core-as-mold” strategy is proposed to address the fabrication challenges of composite corrugated sandwich shells in broad engineering applications. This approach synergizes the geometric flexibility of additive manufacturing (AM) with the structural efficiency of filament winding, forming a hybrid manufacturing (HM) method. Specifically, fused filament fabrication (FFF) was used to print short carbon fiber-reinforced high-temperature polyamide (PAHT-CF) cores, which function as molds for winding continuous carbon fiber-reinforced polymer (CFRP) to make multi-materials structure. The mechanical behaviors of these hybrid structures were investigated through axial compression experiments, finite element modeling (FEM), and a theoretical framework incorporating shear and plasticity corrections. The numerical and theoretical models reproduce the governing nonlinear mechanical responses in good agreement with experimental observations. Parametric studies quantified the design-manufacturing trade-off, revealing that increasing the number of CFRP plies triggers a distinct transition in failure modes from PAHT-CF-dominated plastic buckling to CFRP facesheet-dominated brittle fracture. This work provides a guidance for the lightweight design of high-performance hybrid structures through HM and multi-materials technique.提出了一种“核心即模具”的策略来解决复合波纹夹层壳在广泛工程应用中的制造挑战。该方法将增材制造（AM）的几何灵活性与纤维缠绕的结构效率相结合，形成了一种混合制造（HM）方法。具体而言，采用熔融长丝制造技术（FFF）打印出碳纤维增强高温聚酰胺（PAHT-CF）短芯，作为缠绕连续碳纤维增强聚合物（CFRP）的模具，形成多材料结构。通过轴压试验、有限元建模（FEM）以及包含剪切和塑性修正的理论框架，研究了这些混合结构的力学行为。数值和理论模型再现了控制非线性力学响应，与实验观测结果吻合良好。参数化研究量化了设计与制造之间的权衡，揭示了碳纤维增强材料层数的增加引发了破坏模式的明显转变，从paht - cf主导的塑性屈曲到碳纤维增强材料面板主导的脆性断裂。本研究为高性能混合结构的轻量化设计提供了指导。来源：复合材料力学仿真Composites FEM

【新文速递】2026年5月7日固体力学SCI期刊最新文章

International Journal of Solids and Structures

Journal of the Mechanics and Physics of Solids

Thin-Walled Structures

【新文速递】2026年4月26日复合材料SCI期刊最新文章