基于模态曲率差参数的网壳结构损伤定位

Nondestructive tests of reticulated dome based on parameter of mode curvature

将杆件模态曲率参数运用到网壳结构无损定位分析中,通过计算分析比较发现,以模态曲率为参数的损伤定位方法适用于工程中常用网壳结构的损伤定位。分别针对Schwedle型球面网壳、单层凯威特网壳、单层三向柱面网壳、单层双斜杆柱面网壳及双层凯威特网壳结构进行了计算分析对比,结果发现对于梁式单元网壳结构的损伤情况,损伤定位精度很高,证明了以模态曲率为参数的损伤定位方法对网壳结构进行损伤定位的有效性和实用性。

In the application of the mode curvature parameter in the nondestructive tests of the reticulated dome, through the investigation and comparison, we find that the parameter is suitable for a few reticulated dome structures, such as the single-layer reticulated dome of Schwedler. In these structure＇s nondestructive tests, we found that the identification accuracy is extraordinarily high, proving the effectiveness and applicability of the mode curvature parameter in reticulated dome structures＇ damage location.