基于曲率模态的结构损伤定位

Curvature mode-based structure damage localization

为了研究如何剔除绝对曲率差曲线用于损伤定位时所出现的干扰峰值点,在分析绝对曲率差用于损伤定位的理论依据基础上,以悬臂梁有限元模型为例,结合工程实际,深入研究了绝对曲率差曲线的特点及其损伤定位效果。根据绝对曲率差的损伤定位理论和其曲线特点,提出了用于剔除绝对曲率差曲线中各种干扰峰值点的损伤定位准则并进行了数值验证。研究结果表明,根据损伤定位准则能够完全剔除绝对曲率差曲线中的干扰点,实现对损伤的精确定位,为绝对曲率差曲线成功用于实际工程的损伤定位奠定了基础。

Based on the theory gist of the absolute curvature difference curve＇s application in damage localization, the cantilever beam＇s finite model was taken as an example to lucubrate the damage localization effects using absolute curvature difference curves and the curve traits. The damage localization rules were put forward to eliminate interferential peak values in absolute curvature difference cures. The investigation indicates that the damage localization rules can eliminate all interferential peak values in absolute curvature difference cures and can implement accurate damage localization.