| 结构损伤的非概率区间识别方法 |
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| 引用本文： | 王晓军,杨海峰,邱志平.结构损伤的非概率区间识别方法[J].固体力学学报,2010,31(1):94-100. |
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| 作者姓名： | 王晓军 杨海峰 邱志平 |
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| 作者单位： | 北京航空航天大学固体力学研究所 |
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| 基金项目： | 国家自然科学基金项目(10872017);;高等学校学科创新引智计划项目(B07009);;凡舟青年基金项目(20080503)资助 |
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| 摘 要： | 基于结构时域加速度响应,利用区间分析方法对具有外界激励和测量数据不确定性的结构系统进行损伤识别.不确定性量被处理为有界区间数,基于参考有限元模型和被测加速度响应,经过提出的两步模型参数的区间修正方法分别得到了未损伤和损伤结构区间模型,进而通过定义的PoDE(Possibility of Damage Existence)确定了结构各单元的损伤可能性.最后以十杆平面桁架系统为例,对区间方法与概率方法的损伤识别结果进行对比,讨论了损伤程度和不确定度对识别结果的影响,结果表明了本文方法的可行性与有效性.
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| 关 键 词： | 损伤识别 区间模型修正 不确定性 区间方法 动力响应 |
| 收稿时间： | 2009-04-21 |
NON-PROBABILISTIC INTERVAL IDENTIFICATION METHOD FOR STRUCTURAL DAMAGE |
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| Xiaojun Wang,Haifeng Yang,Zhiping Qiu.NON-PROBABILISTIC INTERVAL IDENTIFICATION METHOD FOR STRUCTURAL DAMAGE[J].Acta Mechnica Solida Sinica,2010,31(1):94-100. |
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| Authors: | Xiaojun Wang Haifeng Yang Zhiping Qiu |
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| Institution: | Institute of Solid Mechanics;Beijing University of Aeronautics and Astronautics;Beijing;10019 |
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| Abstract: | An interval damage-identification method for a structural system with uncertainties in the excitation force and measurements is proposed based on the acceleration responses of structural time-domain.The uncertainties were considered as bounded interval numbers.Based on the referencial finite element model and the measured acceleration response,the interval models for undamaged and damaged structures were obtained by the proposed two-step interval updating procedure.Then,the possibility of damage existence(P... |
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| Keywords: | damage identification interval model updating uncertainties interval analysis method dynamic response |
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