基于残余模态力的装备悬臂梁结构损伤诊断  

Damage Diagnosis of Equipment Cantilever Beam Based on Residual Modal Force

作　　者：李浩 谭一帆 蒲云[1] Li Hao;Tan Yifan;Pu Yun(School of Transportation and Logistics,Southwest Jiaotong University,Chengdu 610031,China;Department of Force Management,Officers College of PAP,Chengdu 610213,China)

机构地区：[1]西南交通大学交通运输与物流学院,成都610031 [2]武警警官学院部队管理系,成都610213

出　　处：《兵工自动化》2022年第9期76-79,共4页Ordnance Industry Automation

基　　金：国家重点研发计划课题(2017YFB1200703)、(2016YFC0802209);四川省科技计划项目(2019YJ0266)。

摘　　要：针对装备悬臂梁结构损伤诊断问题,提出基于残余模态力的结构损伤诊断方法。定义残余模态力(残余模态力向量)和结构单元损伤因子(结构单元损伤因子向量)的概念,分别应用于判断装备结构是否存在损伤以及指示损伤单元的位置和程度,并分别进行3种状态的仿真实验。实验结果证明:该方法可有效地识别装备悬臂梁结构的损伤类型及其位置和程度等信息,对于装备悬臂梁结构诊断是科学有效的。A structural damage diagnosis method based on residual modal force is proposed for the damage diagnosis of equipment cantilever beam structure.The concepts of residual modal force(residual modal force vector)and structural element damage factor(structural element damage factor vector)are defined,which are applied to judge whether the equipment structure is damaged and indicate the location and degree of the damaged element,and the simulation experiments of 3 states are carried out respectively.The experimental results show that the method can effectively identify the damage type,location and degree of the equipment cantilever beam structure,and is scientific and effective for the equipment cantilever beam structure diagnosis.

关 键 词：模态参数 残余模态力 单元损伤因子 悬臂梁结构 结构损伤诊断 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]