基于频响函数的结构损伤检测

Structural Damage Assessment Based on Frequency Response Function

对一拉索结构的正常状态及两种损伤状态进行了模态测试 ,用频响函数的曲率来进行损伤检测。结果表明 :频响函数的曲率对损伤非常敏感 ,不仅反映出了损伤位置 ,而且能够表示损伤程度。

Modal test was done on a cable-stayed structure in its healthy and two damaged conditions. Curvature of the Frequency Response Function (FRF) was used to detect the location of damage. Results show that cur vature of the FRF is very sensitive to the damage and can be used as an excellen t indicator.