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工程科学与技术:2014,46(6):85-94
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高柔悬臂结构损伤识别的约束柔度法
(1.后勤工程学院军事土木工程系;2.总参工程兵科研三所)
ConstraintedFlexibilityMethodforDamageIdentificationwithHighFlexibleCantileverStructure
(1.MilitaryDept.ofCivilEng.,LogisticalEng.Univ.;2.The Third Eng. Scientific Reasearch Inst. of the Headquaters of the General Staff)
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投稿时间:2014-03-17    修订日期:2014-06-12
中文摘要: 为识别高柔悬臂结构的损伤位置和损伤程度,提出损伤识别约束柔度法。分别推导出等效抗弯刚度和柔度矩阵元素与模态参数的关系等式;基于任一阶模态参数,将高柔悬臂结构简化为弯曲型集中质量模型,分析基于弯曲型集中质量模型的损伤识别柔度法的病态性,引入约束条件,建立低病态性的方程组,通过解方程组识别损伤。数值算例表明:所提方法识别效果较好,明显改善了损伤识别柔度法的病态性。
Abstract:In order to identify the location and extent of the damage for high flexible cantilever structure,the constrainted flexibility method for damage identification was proposed.The relationships between equivalent bending stiffness and the elements of the flexibility matrix or a first-order modal parameters were deduced,and high flexible cantilever structure was simplified as a curved concentrated mass model based on a first-order modal parameters.By analyzing morbid of flexibility method for damage identification based curved concentrated mass model and introducing constrainted conditions,low morbid equations were established and used to identify damage.The results of numerical example showed that constrainted flexibility method for damage identification has better identifications,and significantly improves the morbid of flexibility method.
文章编号:201400281     中图分类号:    文献标志码:
基金项目:重庆市科技攻关项目资助(cstc2012gg-sfgc00002)
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王高胜,石少卿,王仲刚,杨朝山,罗文.高柔悬臂结构损伤识别的约束柔度法[J].工程科学与技术,2014,46(6):85-94.
Wang Gaosheng,Shi Shaoqing,Wang Zhonggang,Yang Chaoshan,Luo Wen.ConstraintedFlexibilityMethodforDamageIdentificationwithHighFlexibleCantileverStructure[J].Advanced Engineering Sciences,2014,46(6):85-94.