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复合材料波纹板剪切载荷作用下屈曲试验与分析研究

吴存利   

  1. 中国一航飞机强度研究所
  • 收稿日期:2010-07-06 修回日期:2011-05-02 发布日期:2011-05-06
  • 通讯作者: 吴存利

Buckling investigation of Composite Corrugated Plates Subjected to Shear Loading

吴存利 WU Cun-Li   

  • Received:2010-07-06 Revised:2011-05-02 Published:2011-05-06
  • Contact: 吴存利 WU Cun-Li

摘要: 对复合材料波纹板在剪切载荷作用下屈曲进行试验、工程算法和有限元算法研究。通过试验,探索了两种不同波长的复合材料波纹板屈曲载荷和破坏载荷;采用工程算法和有限元方法计算了八种不同波长的复合材料波纹板屈曲载荷,并与试验结果进行了比较分析。在试验和分析研究的基础上,提出了对复合材料波纹板屈曲载荷计算值修正的修正因子。结果表明,相对于试验结果,波纹板屈曲载荷的工程计算值大于试验值,而有限元计算值小于试验值,且随着波长的增大,两种方法计算误差越来越大。计算结果也表明本文提出的计算载荷修正因子,可以有效地对有限元计算值和工程计算值进行修正,使修正后的计算值接近于试验值。

关键词: 复合材料, 波纹板, 剪切载荷, 有限元模型, 屈曲

Abstract: The buckling of composite corrugated plates subjected to shear loads is investigated via experiments and computations. First, the buckling and failure loads are examined by experiments for corrugated plates with two different wave lengths. Then, the buckling loads for eight different wave lengths are explored by the engineering method and the finite element method. Finally the correction factors for the computational buckling loads are proposed. Compared with experimental data,it reveals that the buckling loads is greater than the experimental loads for the engineering method, while smaller for the finite element method. The results also show the longer the wave length is, the more the error is for the computational buckling loads. In addition, the results show that the computational buckling loads can be updated around experimental loads by the correction factors, which means that the correction factors are feasible and efficient for this kind of problem.