摘要
针对复合材料加筋壁板的稳定性问题,分别采用特征值分析法和弧长法对J型加筋壁板结构进行分析。特征值法可确定加筋壁板的失稳临界载荷、位置及波形;弧长法根据加筋壁板各点的纵向应变与载荷关系曲线的斜率变化,判断加筋壁板的失稳临界载荷和位置。将这两种方法的分析结果与试验对比,得到如下结论:两种方法确定的失稳载荷和位置与试验判断一致。
This paper carried out an investigation on the stability of composite stiffened plates. We employed two different techniques to study the buckling behavior of J-stiffened plates respectively. With the eigenvalue analytical method, we obtained the first buckling mode and the critical load. Using arc-length method, we plotted some loadstrain curves of the typical points on the panel and stiffeners, and we determined the buckling loads and location from these figures. Comparing the analytical and the experimental results, it is found that the difference between them is small, that is, the methods presented in this paper are reasonable and reliable.
出处
《机械科学与技术》
CSCD
北大核心
2009年第9期1190-1193,共4页
Mechanical Science and Technology for Aerospace Engineering
关键词
复合材料
加筋壁板
稳定性
弧长法
特征值分析法
composite
stiffened plate
stability
arc-length method
eigenvalue analytical method
