- 基于复模态的非比例阻尼结构参数识别研究
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- 发表时间： 2005-01-01
- 发表刊物： 哈尔滨工业大学学报
- 卷号： 37
- 期号： 12
- 页面范围： 1647-1649
- ISSN号： 0367-6234
- 摘要： The radiation damping induced by an infinite medium has great effects on the dynamic response of underground structures, which is usually added on the nodes at the outer boundary of the structures in a simplified model. The mechanics of radiation damping is different from the structural damping and is difficult to obtain because of the complexity of geological and geographical conditions and the limit of computational size. In this paper, the complex modes are used to obtain the parameters of this kind of structure and an iterative algorithm is proposed in solving the coupling of damping and stiffness. Finally, a numerical example is applied and the results show that the parameters including node damping can be estimated accurately.
- 备注： 新增回溯数据
