量测模态数量对结构损伤识别影响数值模拟研究

详细信息

A NUMERICAL SIMULATION FOR INFLENCE OF MEASUREMENT MODE QUANTITY ON STRUCTURAL DAMAGE IDENFIFICATION

(Institute of Civil Engineering, Dalian Fisheries University, Dalian, Liaoning 116023, China)

摘要: 基于不完备信息开展土木工程结构损伤识别研究是一个热点、难点问题。利用结构部分节点振型分量以及低阶固有频率对一两层框架结构进行了损伤识别数值模拟研究，着重考察了量测模态数量对损伤识别精度的影响，为实际结构损伤识别信息的选取提供了一定依据。
- 损伤识别 /
- 模态 /
- 模态参与因子 /
- 高斯-牛顿最小二乘法 /
- 频率
Abstract: A numerical simulation of structural damage identification on a two-storey frame was performed by using part of nodal mode shapes and several low frequencies. The influence of measurement mode quantity on damage identification was investigated, offering some basis for selection of the real structural damage information.
- damage identification /
- mode /
- modal participation factors /
- Gauss-Newton least square method /
- frequency