基于代理模型的黏滞阻尼器介质幂律参数反演  

Material power-law parameters inversion technique of viscous damper based on surrogate model

作　　者：文登[1] 唐璐[1] 韩鹏飞[1] 杨全[1] 宁响亮[1] 

机构地区：[1]株洲时代新材料科技股份有限公司,湖南株洲412007

出　　处：《地震工程与工程振动》2014年第5期225-230,共6页Earthquake Engineering and Engineering Dynamics

摘　　要：黏滞阻尼器介质满足幂律定律,其幂律参数试验测试方法复杂,成本高,难度大,是制约黏滞阻尼器发展的一个重要因素。本文结合有限元仿真技术、代理模型技术和优化方法,提出一种反演方法对某黏滞阻尼器的介质幂律参数进行反演。首先,建立黏滞阻尼器有限元模型;然后,通过试验设计方法选取合理的样本点,以介质幂律参数作为设计变量,以最大阻尼力为设计目标,建立近似模型,作为正问题;接着,根据试验和仿真结果构建反问题模型,利用优化算法进行反演。最后,进行结果试验验证。验证结果表明:本文提出的反演方法有效可行,所得结果正确,具有较好的工程适用性。The parameters test of viscous damper fluid,which corresponds to the power law,is complex,costly and difficult. And it restricts the development of viscous dampers. Based on the finite element method,surrogate model and optimization technique,as an inverse method,were proposed to get material power-law parameters. The finite element model of viscous damper was set up first. Then,the material power-law parameters were treated as design variables,the maximum damping force was the design objective,and an approximate model as forward problem was established on the basis of responses of sample points selected by employing the design of experiments. The inverse problem was finished after experiments and simulation. Finally,the inversion technique was verified by test experiment. Test results show that the inverse method is feasible,the results are correct and the inversion technique can adapt well to engineering application.

关 键 词：黏滞阻尼器 有限元分析 代理模型 反演 

分 类 号：O373[理学—流体力学] TP391[理学—力学]