摘要
Abstract
Experimental and numerical investigations were conducted into the damage growth and collapse behavior of a composite blade-stiffened panel during the post-buckling period. The panel was loaded in compression to collapse, which was characterized by complex post-buckling damage, including stiffener debonding, fiber fracture, delamination, matrix cracking, etc. Hashin failure criterion and a quadratic stress-based adhesive failure criterion were introduced to the finite element model, both the buckling load and collapse load agree well with results from the experiment. It is found that the property of the interface is critical to the post-buckling behavior. Stiffeners withstand most of the load than skin after local buckling, stiffness allocation between skin and stiffeners should be given serious consideration during buckling and post-buckling design.关键词
复合材料/压缩实验/后屈曲/有限元分析/加筋板Key words
composite/compression experiment/post-buckling/finite element analysis/stiffened panel分类
通用工业技术
