节点文献
单层球面网壳结构动力稳定分析
DYNAMIC STABILITY OF SINGLE LAYER RETICULATED DOME
【摘要】 本文阐述结构动力稳定性的基本概念,动力稳定研究方法。通过非线性有限元分析空间架单元节点大位移、大转角产生的几何非线性,采用Mises屈服准则和Prandtl-Reuss流动法则模拟材料弹塑性本构关系。讨论网壳结构动力失稳机理。通过大型工程实例分析,验证本文的理论和所编制程序的正确性。
【Abstract】 The dynamic stability of a single layer reticulated dome is studied in the paper. Then, a mechanism of the dynamic instability of a structure is proposed. A non-linear three dimensional beam finite element is used for the non-linear analysis. Combining a geometric non-linearity with a material non-linearity, then extended to the time-history analyses is accomplished in this study. The large displacements and large rotations are at same time analyzed in a geometrically non-linear analysis. In the material non-linear analysis, we adopt the Misses yield criterion and Prandtl-Reuss flow rule. The dynamic stability of a real structure is examined to verify the correctness of the developed program.
【Key words】 single layer reticulated dome; dynamic stability; nonlinear finite element; dynamic instability mechani;
- 【文献出处】 土木工程学报 , 编辑部邮箱 ,2000年06期
- 【分类号】TU35
- 【被引频次】127
- 【下载频次】716