| 基于子结构及模态柔度曲率差的某框架结构损伤识别 |
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| 引用本文： | 马立元,李世龙,李永军,王天辉.基于子结构及模态柔度曲率差的某框架结构损伤识别[J].海军工程大学学报,2011(5):21-26. |
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| 作者姓名： | 马立元 李世龙 李永军 王天辉 |
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| 作者单位： | 军械工程学院导弹工程系; |
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| 摘 要： | 基于子结构思想,通过对框架结构中子结构的边界施加虚拟的数值支座,限制子结构边界的位移,把子结构从整体结构中隔离出来.运用提出的模态柔度曲率差方法对予结构进行了损伤识别.结果表明:该方法仅需低阶模态参数即可进行损伤识别,不论对单一位置损伤,还是多种共存的损伤,均具有损伤定位的能力,并能定性反映损伤程度.与已有的柔度差、柔...
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| 关 键 词： | 损伤识别 子结构 柔度矩阵 模态柔度曲率差 |
Damage identification of a frame based on substructure and modal flexibility curvature difference |
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| MA Li-yuan,LI Shi-long,LI Yong-jun,WANG Tian-hui.Damage identification of a frame based on substructure and modal flexibility curvature difference[J].Journal of Naval University of Engineering,2011(5):21-26. |
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| Authors: | MA Li-yuan LI Shi-long LI Yong-jun WANG Tian-hui |
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| Institution: | MA Li-yuan,LI Shi-long,LI Yong-jun,WANG Tian-hui(Dept.of Missile Engineering,Ordnance Engineering College,Shijiazhuang 050003,China) |
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| Abstract: | The substructure of a frame was isolated from the global structure by applying numerical supporting to the substructure boundary based on the substructure method.Then the damage to the substructure was recognized by the proposed identification method.Numerical simulation examples indicate that the damage location and severity in structures,whether a single damage or multiple ones,can be detected efficiently by MFCD through only a few lower order modal parameters.Compared with the aforementioned flexibility ... |
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| Keywords: | damage identification substructure flexibility matrix modal flexibility curvature diffe-rence(MFCD) |
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