局部约束阻尼层铺设的优化设计  

Optimal design for partial constrained layer damping

作　　者：李登[1,2] 陆秋海[1] 

机构地区：[1]清华大学航天航空学院应用力学教育部重点实验室,北京100084 [2]赛峰(北京)企业管理有限公司,北京100125

出　　处：《清华大学学报（自然科学版）》2011年第12期1877-1881,共5页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金资助项目(10802040)

摘　　要：在板状结构的抗噪减振中,约束阻尼层的铺设应用是非常广泛的,特别是局部约束阻尼的铺设。该文在Ansys环境下,主要研究了关于局部约束阻尼层铺设的优化问题。首先讨论了约束阻尼的有限元建模方法,然后应用该有限元模型,以提高前若干模态阻尼为目标,采用Cellular Automa-ta及该文改进算法(CAM)探讨了约束阻尼层的拓扑优化。在此基础上,提出了同时考虑局部约束阻尼拓扑形状优化和多设计参数优化的综合方法。仿真结果表明,该方法可以获得更高的阻尼添加效率,可以为板和圆柱壳等工程结构约束阻尼层的铺设提供一定的设计准则。Constrained layer damping is widely used in vibration suppression for plate like structures,especially the partial constrained layer damping（PCLD）.Optimal design for PCLD has been studied in this paper by using Ansys.The finite element model of PCLD is established in Ansys firstly,then,in order to improve the designated modal damping ratios of a plate,topology optimization design is carried out based on the FE model with Cellular Automata（CA） algorithm and the modified version（CAM） by the author.Finally,integrated optimization method of multiparameter design and topology shape design of the PCLD is presented in this paper.Numerical simulations show that the method presented in this paper gains higher damping effectiveness.It can provide a simple design guideline for PLCD optimization in engineering applications with plates and shells.

关 键 词：局部约束阻尼层 减振 拓扑优化 综合优化 

分 类 号：O3[理学—力学]