| 利用模态曲率差法进行弹性薄板的损伤检测 |
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| 引用本文： | 张波,王宗元,王赟,姜峰.利用模态曲率差法进行弹性薄板的损伤检测[J].地下空间与工程学报,2011,7(1):144-149. |
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| 作者姓名： | 张波 王宗元 王赟 姜峰 |
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| 作者单位： | 1.陕西理工学院土木工程与建筑系,陕西 汉中 723001;2.斗山巴布克能源技术(上海)有限公司武汉分公司,武汉 430070;3.甘肃省机械科学研究院,兰州 730030 |
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| 摘 要： | 弹性薄板在工程中被广泛应用,对弹性薄板进行在役无损检测具有重要意义。本文在前人的研究基础上,以四边固支薄板为研究对象,运用ANSYS分析软件,采用改变单元弹性模量的方法模拟结构损伤,应用基于模态曲率差的损伤识别方法对板结构进行损伤检测。算例表明:在薄板的一个比较小的区域损伤的情况下,有损伤单元的模态曲率差的值变化明显,因此可以采用模态曲率差法对结构进行损伤识别并能准确判定损伤的位置。
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| 关 键 词： | 弹性薄板 模态曲率差 损伤检测 |
| 收稿时间： | 2010-11-08 |
Damage Detection for Elastic Thin Plate with Modal Curvature Difference Method |
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| Zhang Bo,Wang Zongyuan,Wang Yun,Jiang Feng.Damage Detection for Elastic Thin Plate with Modal Curvature Difference Method[J].Chinese Journal of Underground Space and Engineering,2011,7(1):144-149. |
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| Authors: | Zhang Bo Wang Zongyuan Wang Yun Jiang Feng |
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| Affiliation: | 1.Department of Civil Engineering & Architecture, Shaanxi University of Technology, Hanzhong, Shaanxi 723001,China; 2.Doosan Babcock Energy Technologies(Shanghai)Limited Wuhan Branch, Wuhan 430070, China 3.Gansu Academy of Mechanical Sciences, Lanzhou 730030, China |
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| Abstract: | The damage detection for elastic thin plate is very important for its popular use in plate structure.The elastic thin plate with four simply clamped edges is taken as the study object,and the structural damage is simulated by changing the elastic modulus of elements,and the methods of the damage identification based on the difference of the curvature mode are used by means of ANSYS.The results show: in the thin slab with small area damaged,the difference of the curvature mode of the damage element changed obviously,so the location of the structure damage can be identified exactly by using the method of the modal curvature difference. |
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| Keywords: | elastic thin plate modal curvature difference damage detection |
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