基于SVR 方法的有限元模型确认中不确定性建模研究

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振动与冲击 ›› 2010, Vol. 29 ›› Issue (9) : 119-122，.

论文

基于SVR 方法的有限元模型确认中不确定性建模研究

朱跃1;张令弥1;郭勤涛2

作者信息 +

SVR based uncertainty modeling method to structuresfinite element model validation

Zhu Yue1;ZHANG Ling-mi1;GUO Qin-tao

Author information +

文章历史 +

摘要

针对模型确认中结构有限元模型不确定性建模问题，采用D最优实验设计方法生成无明显分布规律的样本空间，提出用支持向量机回归（Support Vector Regression）方法建立结构响应和不确定参数之间的映射关系，给出了基于SVR方法进行不确定建模的一般步骤，引入了三级检验对支持向量机响应面模型的精度和泛化能力进行全面评价,以GARTEUR模型为仿真算例，比较了向量机响应面模型和幂多项式响应面模型，结果证明了该方法对模型的不确定性建模问题具有较高的精度，具有较好的推广性。

Abstract

Aiming at the uncertainty modeling of FE model for structure, D-opt experiment design produced sample space. Supported Vector Regression (SVR) method was presented to construct the implicit mapping between structure response and uncertainty parameters. The computational process of forward transfer of uncertainty parameters has been clarified. Three level testing criteria was used to evaluate extensively precision and generalization ability of RSM based SVR.Compare to polynomial RSM, The efficiency and accuracy of the proposed method were proved by the case study of GARTEUR.

导出引用

朱跃;张令弥;郭勤涛. 基于SVR 方法的有限元模型确认中不确定性建模研究[J]. 振动与冲击, 2010, 29(9): 119-122，

Zhu Yue;ZHANG Ling-mi;GUO Qin-tao. SVR based uncertainty modeling method to structuresfinite element model validation[J]. Journal of Vibration and Shock, 2010, 29(9): 119-122，