基于变形能的粘弹性薄阻尼层结构阻尼特性分析  

Damping Characteristics Analysis of Viscoelatic Thin Damping Layer Structure Based on Deformation Energy Method

作　　者：孙宝[1] 孙大刚[1] 宋勇[1] 李占龙[2] 王军[1] 

机构地区：[1]太原科技大学机械工程学院,山西太原030024 [2]西安理工大学机械与精密仪器工程学院,陕西西安710048

出　　处：《兵工学报》2015年第4期744-751,共8页Acta Armamentarii

基　　金：国家青年科学基金项目(51305288;51405323);山西省回国留学人员科研资助项目(2012-073);山西省青年科学基金项目(2013021020-1)

摘　　要：为了研究多弹性层约束阻尼结构的阻尼性能,将变形能原理应用于粘弹性薄阻尼层约束阻尼结构阻尼特性分析中,在一种薄阻尼层结构基础上,给出了一种求解结构损耗因子的理论方法,获得了结构损耗因子与材料损耗因子、阻尼结构剪切参数、刚度参数的耦联关系。引入该理论,对层间厚度、相关阻尼参数进行了优化分析。针对两个应用实例,通过有限元模态应变能法对比表明,变形能理论法计算结果与有限元法实验结果比较一致,验证了该理论方法的合理性。为研究多弹性层约束阻尼结构损耗因子的计算、机械产品的设计及结构改进等问题提供了一定的理论参考。In order to study the damping characteristics of constrained damping structure with multiple elastic layers, a calculation method of a constrained damping structure loss factor is set up based on the principle of deformation energy. And the coupling relation among structure loss factor, material loss factor, shear parameter of damping structure and stiffness parameter is got. The proposed method is introduced into the optimization analysis of the interlayer thickness, structure and related material damping parameter. The finite element modal strain energy method is used to compare two practical examples. The comparative result shows that the calculated results of the theoretical method is in agreement with the experimental results obtained by finite element method.

关 键 词：机械学 薄阻尼层 损耗因子 变形能原理 参数分析 

分 类 号：TB153[天文地球—天文学]