薄板面内压缩反屈曲与刚度强化

IF 3.8 3区工程技术 Q1 MECHANICS

International Journal of Solids and Structures Pub Date : 2025-05-23 DOI:10.1016/j.ijsolstr.2025.113473

Jianquan Qi, Yuli Dong, Chuan Yang, Dashan Zhang

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引用次数: 0

摘要

通过单轴和双轴压缩试验，研究了6块简支铝合金板的屈曲和后屈曲行为。利用VIC-3D数字图像相关系统捕获了后屈曲阶段的屈曲模式和反屈曲变形。结构响应分析揭示了反向屈曲变形和刚度增强之间的明确相关性。确定了屈曲载荷和破坏载荷。通过沿板边应力分布分析，阐明并验证了反屈曲变形的形成机理。利用VIC-3D结果研究了反屈曲变形对薄板模态跳变的影响。这些实验方法为研究复合加载条件下的薄板提供了参考。

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Reverse buckle and stiffness strengthening of thin plate under in-plane compression

The buckling and postbuckling behaviors of six simply supported aluminium alloy plates were investigated through uniaxial and biaxial compression tests. The buckling modes and reverse buckle deformations in the postbuckling stage were captured using a VIC-3D digital image correlation system. Analysis of the structural responses revealed a clear correlation between reverse buckle deformation and stiffness strengthening. The buckling and failure loads were identified. The formation mechanism of reverse buckle deformation was clarified and validated through stress distribution analysis along the plate edges. The influence of reverse buckle deformation on the mode jump of thin plates was examined using the VIC-3D results. These experimental methods provide a reference for studying thin plates under combined loading conditions.

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来源期刊

International Journal of Solids and Structures 物理-力学

CiteScore

6.70

自引率

8.30%

发文量

405

审稿时长

70 days

期刊介绍： The International Journal of Solids and Structures has as its objective the publication and dissemination of original research in Mechanics of Solids and Structures as a field of Applied Science and Engineering. It fosters thus the exchange of ideas among workers in different parts of the world and also among workers who emphasize different aspects of the foundations and applications of the field. Standing as it does at the cross-roads of Materials Science, Life Sciences, Mathematics, Physics and Engineering Design, the Mechanics of Solids and Structures is experiencing considerable growth as a result of recent technological advances. The Journal, by providing an international medium of communication, is encouraging this growth and is encompassing all aspects of the field from the more classical problems of structural analysis to mechanics of solids continually interacting with other media and including fracture, flow, wave propagation, heat transfer, thermal effects in solids, optimum design methods, model analysis, structural topology and numerical techniques. Interest extends to both inorganic and organic solids and structures.