【新文速递】2026年5月19日复合材料SCI期刊最新文章

今日更新：International Journal of Solids and Structures 1 篇，Journal of the Mechanics and Physics of Solids 1 篇，Thin-Walled Structures 1 篇International Journal of Solids and StructuresEnhancement of strength and durability in single-lap joints using thin double-sided tapeAshwani Kumar Devisharan, Ho Xuan Ngoc Chau, Kounosuke Shimamura, Kosuke Takahashidoi:10.1016/j.ijsolstr.2026.114082 使用薄双面胶带增强单搭接接头的强度和耐久性Adhesive bonding has emerged as a viable and efficient alternative to conventional joining techniques offering the key advantages of reduced structural weight and lower manufacturing costs. It is the preferred method when joining dissimilar materials. Single-lap joints (SLJs) bonded using adhesives are widely used due to their simple design and ease of fabrication. However, these joints exhibit stress concentrations at the bondline ends which lead to sudden premature failure. The concept of variable modulus bondline has been suggested in the past studies as a solution. However, the practical implementation of this method remains challenging. This is due to factors such as the need for precise adhesive placement in a defined area, and ensuring a uniform bondline thickness. This paper presents a novel and practical method to improve the performance of single lap adhesive joints using thin double-sided tapes at bondline ends. Double-sided tape relieves the stress concentration, offers the advantage of easy manufacturability and ensures uniform adhesive thickness without use of complicated mechanis ms. Joints fabricated with aluminum and acrylic adherends were bonded with a structural epoxy adhesive in combination with the tape. The proposed technique was found to enhance the performance both under static and cyclic loading conditions revealing a delayed onset of interfacial debonding in specimens with the proposed tape arrangement. Finite element a nalysis not only confirmed the reduction in stress concentrations but also validated the experimental observations, demonstrating the effectiveness of the proposed technique.粘合剂连接已成为传统连接技术的一种可行和有效的替代方案，具有减轻结构重量和降低 制造成本的关键优势。它是连接不同材料时的首选方法。用胶粘剂粘合的单搭接由于其设计简单、易于制造而被广泛应用。然而，这些接头在结合线末端表现出应力集中，从而导致突然的过早失效。在过去的研究中提出了变模结合线的概念作为解决方案。然而，这种方法的实际实施仍然具有挑战性。这是由于需要在规定的区域内精确地放置粘合剂，并确保粘合线厚度均匀等因素造成的。本文提出了一种新颖实用的方法来提高单搭接接头的性能。双面胶带消除了应力集中，具有易于制造的优点，无需使用复杂的机构即可确保均匀的粘接厚度。用铝和丙烯酸粘合剂制成的接头用结构环氧粘合剂结合胶带粘合。所提出的技术被发现提高了静态和循环加载条件下的性能，揭示了具有所提出的胶带布置的试样的界面剥离延迟发作。有限元分析不仅证实了应力集中的降低，而且验证了实验观察结果，证明了所提出技术的有效性。Journal of the Mechanics and Physics of SolidsTwist-angle dependence of the out-of-plane elasticity in bilayer MoS2Qianglong Wu, Jun Pei, Erteng Chen, Xiaoyi Yuan, Yonghuang Wu, Run Shi, Yukai Li, Tianyi Zhang, Wenjian Su, Jinkai Li, Xinyu Sun, Huan Hu, Yanhao Tang, Zhaohe Dai, Kai Liu, Shuze Zhu, Yang Gaodoi:10.1016/j.jmps.2026.106680二硫化钼双层结构面外弹性的扭角依赖性The interlayer van der Waals (vdW) coupling is pivotal in determining the physical properties of vdW homo- and heterostructures. Out-of-plane elasticity is a quantitative measure of the vdW coupling strength between 2D layers. Here, we report on the direct mechanical measurement of the out-of-plane elastic modulus of twisted bilayer MoS2 with an advanced angstrom-indentation technique combined with theoretical modeling. We demonstrate that the out-of-plane elastic response of bilayer MoS2 is extremely sensitive to the twist angle. The out-of-plane elasticity is maximized when the twist angle < 2° and weakest with the twist angle exceeding 20°. In a s mall range of twist angle (2° ∼ 7°), the out-of-plane elasticity is notably softened. Large-scale molecular dynamics (MD) simulations, which quantitative agree with experimental measurement, suggest that the twist-angle dependence of the out-of-plane elasticity arises from the evolution of stacking patterns due to atomic relaxations. Our work offers new perspectives on elucidating the interplay between the interlayer rotation and the interfacial physics of vdW materials.层间范德华（vdW）耦合是决定vdW同质结构和异质结构物理性质的关键。面外弹性是二维层间vdW耦合强度的定量度量。本文报道了一种先进的埃压痕技术结合理论建模对扭曲双层二硫化钼的面外弹性模量的直接机械测量。我们证明了双层二硫化钼的面外弹性响应对扭转角极为敏感。当扭转角度< 2°时，面外弹性最大，扭转角度超过20°时，面外弹性最弱。在较小的扭转角范围内（2°~ 7°），面外弹性明显软化。大尺度分子动力学（MD）模拟结果与实验结果一致，表明面外弹性的扭转角依赖源于原子弛豫引起的堆叠模式的演化。我们的工作为阐明vdW材料的层间旋转与界面物理之间的相互作用提供了新的视角。Thin-Walled StructuresNon-linear harmonic vibrations of laminate plates with viscoelastic layers described by extended fractional modelsPrzemysław Litewka, Roman Lewandowskidoi:10.1016/j.tws.2026.115091用扩展分数阶模型描述粘弹性层合板的非线性谐波振动Laminate plates are frequently used structural elements in many branches of engineering. The understanding of their dynamic behaviour under various service conditions is of great importance. This paper is devoted to the non-linear harmonic vibration a nalysis of such plates containing viscoelastic layers, which are useful in reducing excessive vibrations. The viscoelasticity is modelled using a generalised scheme valid for four different material descriptions based on the fractional derivatives and including the separation of volumetric and deviatoric parts of deformation. The time-temperature superposition and three methods of thermal shift computation are considered to include the effect of the ambient temperature. The plate kinematics is described with the refined zig-zag theory including the von Kàrmàn geometric non-linearity. The harmonic vibration problem of layered plates is formulated using the harmonic balance method with the exponential complex-conjugate representation of the displacement and stress functions, the time-averaged principle of virtual work and the finite element discretisation. The paper presents the results and discussion of several numerical examples solved using the proposed approach. They include comparison of the damping performance of six different viscoelastic materials described by four models of viscoelasticity for various sandwich plates in various thermal ambient conditions.层压板是许多工程领域中常用的结构元件。了解它们在各种使用条件下的动态行为是非常重要的。本文对含粘弹性层板的非线性简谐振动进行了分析，这对减小超振动有重要意义。粘弹性的建模采用一种广义方案，该方案适用于基于分数阶导数的四种不同的材料描述，并包括体积和变形偏差部分的分离。时间-温度叠加和三种热移计算方法考虑了环境温度的影响。用包含von Kàrmàn几何非线性的精细化之字形理论描述板的运动学。采用位移和应力函数的指数复共轭表示、虚功时均原理和有限元离散化的谐波平衡法，建立了层状板的谐波振动问题。文中给出了用该方法求解的几个数值算例的结果和讨论。其中包括用四种粘弹性模型描述的六种不同粘弹性材料在不同热环境条件下的阻尼性能的比较。来源：复合材料力学仿真Composites FEM