平面薄板结构应变模态分析  

An analysis of strain modality of the level sheet structure

作　　者：朱晓玲[1] 向在喜[1] 胡均安[1] 魏兵[1] 

机构地区：[1]湖北工学院机械工程学院,湖北武汉430068

出　　处：《广西工学院学报》2004年第1期31-34,共4页Journal of Guangxi University of Technology

摘　　要：从位移模态出发推导了应变模态的表达式;以平面薄板模型为例,进行了位移模态与应变模态实验分析,并与有限元计算结果进行比较,验证了三者识别的模态参数基本一致,而且应变模态分析方法可以清晰看到有孔板的应变模态在孔处有突变。Proceeding from the displacement modality,the expression of strain modality is deduced.Take the level sheet model as an example,the experimental analysis is made of the displacement modality and strain modality,and the analysis is compared with the computing results of the finite element.The fact is tested and verified that the modal parameters of the above two modalities and the finite element are basically the same.The strain modality analysis may clearly show that the strain modality at the hole of the hole board may change suddenly.

关 键 词：平面薄板 薄板结构 应变模态 位移模态 传递函数 有限元 模态分析 

分 类 号：TU375.2[建筑科学—结构工程] TU312.1