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Abstract 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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Received: 21 April 2009
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2010, Vol. 31 
