The parameter identification of superplastic constitutive model using optimization

被引：1

作者：

Jin, QL ^{[1
]}

Wu, HY ^{[1
]}

机构：

[1] Beijing Res Inst Mech & Elect Technol, Beijing 100083, Peoples R China

来源：

ADVANCES IN ENGINEERING PLASTICITY, PTS 1-2 | 2000年 / 177-1卷

关键词：

inverse technique; optimization; parameter identification; superplastic constitutive;

D O I：

10.4028/www.scientific.net/KEM.177-180.607

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A study on the material parameter identification of a superplastic constitutive model using the inverse technique is presented in this paper. The model considers both the contributions of three types of microscopic deformation mechanism to macro-deformation and microstructure changes. In this study an empiric equation in the model is also improved so that the obtained results are more reasonable. The DFP optimization method is chosen to determine all of these 18 material parameters and the calculated curves are in agreement with the experimental ones very well for the alloys Ti-6Al-4V and 7475Al alloys.

引用

页码：607 / 612

页数：6

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