复合材料加筋板剪切屈曲有限元分析

Buckling behavior analysis of composite stiffened plates

为研究加筋板结构在板边界受到集中载荷和分布载荷下的屈曲特性,应用有限元软件ANSYS对复合材料加筋板在纯剪切条件下的屈曲行为进行数值模拟,分析其在不同加载条件下的屈曲模态。结果表明:均布载荷时,屈服载荷最大,结构最稳定;集中载荷时,屈服载荷较小,稳定性较好;部分分布载荷时,屈服载荷最小,稳定性最差。分析结果可为优化设计和工程应用提供理论参考。

This paper is an attempt to investigate the buckling behaviors of stiffener plate structures subjected to concentrated load and distributed load by using the finite element-ANSYS to perform shearing buckling behavior analysis of composite stiffened plates.The analysis of buckling modals under different loads shows that the uniformed load gives the biggest buckling load,resulting in the best structural stability;the concentrated load affords the smalle buckling load,resulting in much better structural stability; the concentrated load affords the smalle buckling load, resulting in much better structural stability; the partially uniformed load reveals the smallest buckling load, resulting in the worst structural stability. The analysis results provide theoretical basis for optimization design and engineering application.