摘要
针对复合材料薄壁加筋板的轴压后屈曲问题,结合相关试验,采用有限元方法进行了分析,并考虑了不同分析参数的影响。结果表明,在后屈曲分析中使用立即失效模型表征材料的失效行为更符合实际情况。对于薄壁结构,在模型中添加胶层单元对结构总体行为有较大影响,在实际设计过程中可以用不含胶层单元的模型预测结构的破坏载荷和失效模式。
Numerical investigations using FEM as well as experiment approach have been conducted into the postbuckling behavior of thin - wailed composite stiffened panels which subject to compres- sion loaded along axis. Effects of different analyse parameters was considered. The results showed that it was more reasonable to use immediate degradation model for composite in postbuckling analy- sis. Adding bonding elements to the model would greatly affect the behavior of the structure, and it was acceptable to use model without bonding elements to evaluate the ultimate failure load and fail- ure mode of the structure.
出处
《直升机技术》
2013年第3期11-17,共7页
Helicopter Technique
关键词
复合材料
薄壁加筋板
后屈曲
composite
thin - wailed stiffened panels
postbuckling.
