文档介绍：
基于代理模型的结构有限元模型修正关键
问题研究#
刘洋,唐旭,张绍逸*
5
10
(哈尔滨工业大学交通科学与工程学院)
摘要:针对提高大型复杂结构有限元模型修正的计算效率问题,采用代理模型(Meta model)
建立结构静力或动力特征与结构参数之间的函数关系,从而利用该函数关系替代结构有限
元模型是解决上述问题的一种有效途径。首先,分别介绍了两种常用的代理模型,即响应
面模型与 Kriging 模型;其次,通过比较两种代理模型的性能,指出代理模型在结构有限元
模型修正应用中的关键问题,并给出了如何选用结构有限元模型修正中代理模型的建议;最
后。
关键词:大型复杂结构,结构有限元模型修正,代理模型,Kriging 模型,响应面模型
中图分类号:
15
Key Issues of Updating the Finite Element Model of
Structures by Using Meta-model
LIU Yang, TANG Xu, ZHANG Shaoyi
20
25
30
35
40
(School of Transportation Science and Engineering, Harbin Institute of Technology)
Abstract: The basic idea of meta-model is to build a surrogate model of finite element (FE) model
of structures by using the relationship between the static or dynamic characteristics of structures.
Therefore, it is an effective way for using the meta-model to improve the efficiency of FE model
updating of the large-scaled plex structures. Firstly, Kriging model and response surface
model were introduced in detail. Secondly, some key issues of the application of Meta-model to
FE model updating of structures were proposed paring the performance of above two
meta-model, and then some advices were presented in order to select a reasonable meta-model for
updating the FE model of structures. Finally, the effectiveness of the proposed theory was
demonstrated by updating the FE model of a truss bridge model with