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一种改进的响应面方法及其在损伤识别中的应用

DOI: 10.13197/j.eeev.2014.06.145.lisl.019, PP. 145-152

Keywords: 响应面,模型修正,支持向量机,核函数,损伤识别

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Abstract:

及时、准确地发现机械结构的早期损伤并采取措施,防止因损伤扩展而导致发生灾难性事故,无疑具有重要的理论意义和重大的社会经济效益.为实现对复杂结构损伤的准确识别,本文提出一种改进的最小二乘支持向量机响应面方法,并将其运用于发射台骨架的模型修正及损伤识别.通过对核函数、输入样本数据及训练样本选择方法的改进,经损伤识别数值仿真及实验验证,结果表明改进响应面方法较传统灵敏度方法的识别效果更好,且收敛性及精度大大提高,为解决大型复杂结构的损伤识别问题提供了新思路.

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