| 矩形大开孔圆柱壳轴压作用下的屈曲性能 |
| |
| 引用本文： | 宋波,吴琳,孙北东. 矩形大开孔圆柱壳轴压作用下的屈曲性能[J]. 北京科技大学学报, 2009, 31(2) |
| |
| 作者姓名： | 宋波 吴琳 孙北东 |
| |
| 作者单位： | 北京科技大学土木与环境工程学院,北京,100083 |
| |
| 基金项目： | 国家自然科学基金重大研究计划资助项目(No.90715007) |
| |
| 摘 要： | 利用数值方法研究了开有矩形大开孔的薄壁圆柱壳在轴压作用下的屈曲性能.首先通过特征值屈曲分析,得到开孔圆柱壳的一阶屈曲模态,并预测屈曲荷载的上限;其次,通过非线性分析,得到结构的荷载位移全过程响应;然后引入正交试验设计方法,分析了矩形开口的周向角度、高度和轴向位置等几何参数对结构稳定性的影响.分析表明,矩形开孔圆柱壳临界屈曲荷载的上限值远小于无开孔圆柱壳的下限值,影响矩形开孔圆柱壳轴压作用下稳定性的主要因素为壳体的径厚比,临界荷载值随径厚比的增大迅速下降.
|
| 关 键 词： | 薄壁圆柱壳 矩形大开孔 特征值屈曲 非线性分析 正交试验 |
Buckling behavior of thin-walled cylindrical shells with large rectangular opening |
| |
| SONG Bo,WU Lin,SUN Bei-dong. Buckling behavior of thin-walled cylindrical shells with large rectangular opening[J]. Journal of University of Science and Technology Beijing, 2009, 31(2) |
| |
| Authors: | SONG Bo WU Lin SUN Bei-dong |
| |
| Abstract: | The buckling behavior of cylindrical shells with large rectangular opening was analyzed by the finite element method.Firstly,eigen value buckling was carried out to predict the buckling mode and critical load.Secondly,the load-displacement response of the structure was computed with geometrically nonlinear analysis,and the orthogonal design method was adopted to discuss the influence of geometric parameters on the buckling load.The considered parameters include opening width,opening height,location in the l... |
| |
| Keywords: | thin-walled cylindrical shell large rectangular opening eigen value buckling nonlinear analysis orthogonal experiment |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
