生物启发螺旋叠层复合剪切和法向变形梁的弯曲、屈曲和自由振动分析

IF 6.3 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures Pub Date : 2024-10-11 DOI:10.1016/j.compstruct.2024.118641

Armagan Karamanli , Thuc P. Vo , Mohamed-Ouejdi Belarbi , Seunghye Lee

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引用次数: 0

摘要

本文通过里兹法研究了生物启发螺旋对称层压复合材料（BIHLC）梁的力学行为。通过利用变分公式，得出了运动方程以及元素刚度、几何刚度和质量矩阵。研究对采用各种层压方案的 BIHLC 梁的弯曲、屈曲稳定性和自由振动分析进行了全面检查。所开发的模型与传统复合材料层压梁和 BIHLC 梁的现有文献进行了验证。考虑到边界条件、层压方案、各向同性比和长宽比，研究还考察了 BIHLC 的机械响应。值得注意的是，挠度、临界屈曲载荷和基频随特定层压方案、边界条件和纵横比的变化而变化。这些首次提出的新发现为该领域未来的研究提供了宝贵的见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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On the bending, buckling and free vibration analysis of bio-inspired helicoidal laminated composite shear and normal deformable beams

The mechanical behaviours of bio-inspired helicoidal symmetric laminated composite (BIHLC) beams are investigated via the Ritz method. By exploiting the variational formulation, equations of motion along with element stiffness, geometrical stiffness, and mass matrices are derived. The study conducts a thorough examination, covering bending, buckling stability, and free vibration analyses of BIHLC beams with various lamination schemes. The developed model is verified against existing literature on conventional composite laminated and BIHLC beams. The study also examines the mechanical response of BIHLCs, considering boundary conditions, lamination schemes, orthotropy ratios, and aspect ratios. Notably, deflections, critical buckling loads, and fundamental frequencies demonstrate variations dependent on the specific lamination scheme, boundary condition, and aspect ratio. Novel findings, presented for the first time, offer valuable insights for future studies in this area.

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来源期刊

Composite Structures 工程技术-材料科学：复合

CiteScore

12.00

自引率

12.70%

发文量

1246

审稿时长

78 days

期刊介绍： The past few decades have seen outstanding advances in the use of composite materials in structural applications. There can be little doubt that, within engineering circles, composites have revolutionised traditional design concepts and made possible an unparalleled range of new and exciting possibilities as viable materials for construction. Composite Structures, an International Journal, disseminates knowledge between users, manufacturers, designers and researchers involved in structures or structural components manufactured using composite materials. The journal publishes papers which contribute to knowledge in the use of composite materials in engineering structures. Papers deal with design, research and development studies, experimental investigations, theoretical analysis and fabrication techniques relevant to the application of composites in load-bearing components for assemblies, ranging from individual components such as plates and shells to complete composite structures.