单层椭球网壳的动力性能研究

Study on the dynamic performance of single layer ellipse lattice shell

应用参数化方法编程建模,考虑结构的几何非线性和材料非线性;用振型分解反应谱法和时程分析法研究网壳的动力特性;分别讨论矢跨比和跨度对网壳动力性能的影响。通过研究,明确单层组合椭球网壳的动力性能,为进一步的网壳抗震和减震研究提供理论基础。

The parameter-oriented method is adopted to make program to build shell model, meanwhile geometry nonlinearity of the structure is considered as well as material nonlinearity; dynamics performance of the shell is studied by the method of superposition response spectrum and tested by time-history analysis, It is also discussed respectively that the two factor span and ratio of height to span have notable effect on the dynamics performance of the shell. The study provided us a full understanding of the dynamics performance of the shell, and theoretical base for progressive study on resistant seismic and vibration reducing.