摘要
Because frequency constraint is the key constraint for dynamic topology optimization of truss, in this paper, a new method for extremum calculation of natural frequency for truss is put forward-an optimization method based on virtual material. It is optimized in two levels with sensitivity analysis; there are nodal design variables and cross-section area variables of truss elements, the bars related to the removed nodes being assigned new material properties; then the extremum of natural frequency is calculated with steepest descent method (SDM). The results of a numerical example and their analysis show preliminarily that the proposed method is correct and effective.
| 源语言 | 英语 |
|---|---|
| 页（从-至） | 498-502 |
| 页数 | 5 |
| 期刊 | Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University |
| 卷 | 31 |
| 期 | 3 |
| 出版状态 | 已出版 - 6月 2013 |