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基于代理模型的黏滞阻尼器介质幂律参数反演

DOI: 10.13197/j.eeev.2014.05.225.wend.028, PP. 225-230

Keywords: 黏滞阻尼器,有限元分析,代理模型,反演

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Abstract:

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。

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