- 输入未知下非比例阻尼结构参数识别方法的研究
- 点击次数：
- 发表时间： 2007-01-01
- 发表刊物： 振动与冲击
- 期号： 4
- 页面范围： 119-122,125
- ISSN号： 1000-3835
- 摘要： In dynamic testing of structures based on ambient excitation such as ground motion and ground micro-tremor, it is difficult to measure input information accurately, because input information is random and its acting location is uncertain. On the basis of the existed methods for multiple inversion, a new approach called 'weighted average amending method' is put forward, it can be used to identify parameters of a non-linear system when ground motion is unknown. If the non-linear system is the one with non-proportional damping, combining this new method with the relaxation method, a new iterative procedure to identify its parameters with unknown input based on least square is proposed. At last, the results of a numerical example with unknown ground motion show that the proposed method is effective.
- 备注： 新增回溯数据
