New inverse method for identification of constitutive parameters

被引：0

作者：

周计明

齐乐华

陈国定

机构：

[1] School of Mechatronic Engineering Northwestern Polytechnical University Xi’an 710072 China

[2] School of Mechatronic Engineering Northwestern Polytechnical University Xi’an 710072 China

来源：

Transactions of Nonferrous Metals Society of China | 2006年 / 01期

基金：

中国国家自然科学基金;

关键词：

Al2O3sf/LY12; composite; constitutive parameters; inverse method; parameter identification; hot deformation; iSIGHT; ABAQUS;

D O I：

暂无

中图分类号：

TB331 [金属复合材料];

学科分类号：

0805 ; 080502 ;

摘要：

A new inverse method by coupling iSIGHT and ABAQUS was proposed to determine the constitutive parameters of Al2O3sf/LY12 composite deforming at elevated temperature. It combined the merits of the finite element simulation and optimization technique. The direct model was simulated with finite element code ABAQUS. The inverse problem associated with the identification of the constitutive parameters was expressed as a least square optimization problem. The direct simulation and the parameters optimization were implemented in iSIGHT integrated environment. The aim was to match the output of the direct simulation with the experiment data. The capability of the proposed inverse method was demonstrated through the identification of constitutive parameters of Al2O3sf/LY12 composite. The proposed new inverse method is also applicable to other parameters identification which is hardly determined through experiments or direct analytical method.

引用

页码：148 / 152

页数：5