瓦楞板全局应变极限研究

Global strain study for corrugated panels

瓦楞板在土木、航空、航海工程中均得到广泛应用,而瓦楞结构的设计和优化则需要变形极限作为设计约束。基于周期均匀化理论,推导了瓦楞板局部应变和等效全局应变之间的关系并获得最大应变值;在此基础上,依据最大应变判据,推导了不同载荷条件下的全局应变极限的分析解。本方法形式简约、精度高,且对任意波纹形状均适用。最后,本文讨论了波纹几何参数对瓦楞板全局应变极限的影响。

Corrugated panels have widely applications in civil,mechanical and aerospace engineering. The design and optimization of the corrugated structures require the deformation limits as constraint conditions. The relationship between the local and global strains of the equivalent models for corrugated panels is derived,and the maximum strain is obtained. Thus,from the maximum strain criterion,the global strain limit is evaluated under different loading conditions,which could be used for any corrugation shapes. The influence of the geometric parameters of the corrugation shape is also investigated.