WANG Long, LU Ping, DUAN Jing-bo. Simulation research on damage detection of cantilever beam structure[J]. 2017, 36(7): 62-64. DOI: 10.13873/j.1000-9787(2017)07-0062-03.
悬臂梁结构损伤检测仿真研究
摘要
以悬臂梁结构为研究对象
针对户外条件下结构损伤检测过程复杂、周期长、检测效果不理想的问题
提出了模态曲率变化率法。通过大型商用有限元软件ABAQUS
建立梁结构有限元模型
基于模态曲率变化率法构建损伤指标
对梁结构进行损伤检测定位
并与模态应变能法的损伤检测效果进行了对比。结果表明:模态曲率变化率法计算过程简单
能够准确快捷地对悬臂梁结构进行损伤识别定位。
Abstract
Taking a cantilever structure for example
aiming at damage detection process is complex
long cycle and detection effect is not ideal under the outdoor conditions
the modal curvature change rate method is proposed.The finite element model is constructed by simulation software ABAQUS
beam structure damage detection and location based on modal curvature change rate method
and the detection effect of contrast mode strain energy method is compared. The results show that the modal curvature change rate method is simple in calculation and can identify the damage location of the cantilever structure accurately.