基于损伤因子的板架结构损伤识别方法研究

PDF(1537 KB)

振动与冲击 ›› 2010, Vol. 29 ›› Issue (12) : 22-25.

论文

基于损伤因子的板架结构损伤识别方法研究

徐峰; 彭海阔; 孟光

作者信息 +

RESEARCH ON DAMAGE DETECTION OF PLATE-LIKE STRUCTURE BASED ON DAMAGE INDEX

XU Feng; PENG Hai-kuo; MENG Guang

Author information +

文章历史 +

摘要

用基于损伤因子的损伤识别方法对板架结构损伤进行识别。先将板架结构简化为多个板的组合；基于损伤前后模态振型从应变能角度推导损伤因子的表达式，用通用有限元软件ANSYS计算两种损伤工况下损伤前后的模态振型，再用B样条法拟合损伤因子曲面从而对损伤的位置进行识别。最后用实验验证了该方法。该方法对于识别板架结构的单个损伤具有较好的可靠性，并可以为识别多损伤位置提供较好的方法指导。

Abstract

A method of damage detection to plate structure based on damage index was introduced. The paper firstly simplified this structure to multi plate combination。From the view of strain energy, deduced the expression of damage index about modal shape, then calculated modal shape before and after damage of two different circumstances and got curved surface of damage index. At last, verified this method using experiment. This method is useful to detect single damage position of plate structure, and can be refereed for multi damages detection.

导出引用

徐峰;彭海阔;孟光. 基于损伤因子的板架结构损伤识别方法研究[J]. 振动与冲击, 2010, 29(12): 22-25

XU Feng;PENG Hai-kuo;MENG Guang. RESEARCH ON DAMAGE DETECTION OF PLATE-LIKE STRUCTURE BASED ON DAMAGE INDEX [J]. Journal of Vibration and Shock, 2010, 29(12): 22-25