| 损伤对板结构振型影响的研究 |
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| 引用本文： | 张吉萍,陈虬. 损伤对板结构振型影响的研究[J]. 浙江海洋学院学报(自然科学版), 2010, 29(1): 1-4 |
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| 作者姓名： | 张吉萍 陈虬 |
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| 作者单位： | 1. 浙江海洋学院船舶与建筑工程学院,浙江舟山,316004
2. 西南交通大学应用力学与工程系,四川成都,610031 |
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| 摘 要： | 分析了板结构的局部损伤对结构的低阶以及高阶振型的影响。假设损伤后的低阶振型为原振型乘以修正函数,采用附加刚度描述结构局部刚度的下降,从连续振动方程推导修正函数的形式,并对修正函数进行分析。分析结果表明,板结构的一阶振型具有更好的损伤定位性能,适合应用于构造损伤标识量。
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| 关 键 词： | 附加刚度 低阶振型 损伤标识量 修正函数 局部损伤 |
Study on the Influence of Mode from Damage of Plate Sturcture |
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| ZHANG Ji-ping,CHEN Qiu. Study on the Influence of Mode from Damage of Plate Sturcture[J]. Journal of Zhejiang Ocean University(Natural Science Edition), 2010, 29(1): 1-4 |
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| Authors: | ZHANG Ji-ping CHEN Qiu |
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| Affiliation: | ZHANG Ji-ping1,CHEN Qiu2(1.Navel Architecture , Civil Engineering School of Zhejiang Ocean University,Zhoushan 316004,2.Department of Applied Mechanics , Engineering,Southwest Jiaotong University,Chengdu 610031,China) |
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| Abstract: | The influence of the local damage to the mode is analyzed,and the added stiffness is used to descript the reduction of the local stiffness during the procession.It is emphasized that the analysis on the lower mode,firstly the first mode of the structure with damage is assumed the multiply of the primary mode and the revising function.Then the revising function is advanced and analyzed. |
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| Keywords: | added stiffness lower mode signature for damage detection revising function local damage |
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