锻压技术

基于模拟退火算法的高强钢Yoshida-Uemori材料模型参数反演分析

英文标题：Parameter inversion on Yoshida-Uemori material model of high strength steel based on simulated annealing algorithm

作者：徐杰王田张荣

单位：重庆工商职业学院重庆大学

分类号：TG386

出版年,卷(期):页码：2016,41(6):133-137

摘要：

针对Yoshida-Uemori模型参数难于确定的问题，以DP600双相高强钢为例，提出将图解法与有限元模拟反演技术相结合，应用工程优化数学思想，借助于模拟退火算法最小化有限元计算值与物理试验真实值之差，兼顾结果精度与求解效率。通过使用不同初始值反演分析可以发现，此求解方法对于初始值具有良好的适应性，可极大提升反演结果的容错率，更适于实际应用。并通过V型弯曲试验验证了经由该方法测定的Y-U模型参数可直接用于有限元回弹仿真模拟中。

For the difficulty of obtaining Yoshida-Uemori material model parameters, an approach combining graphic method with finite element simulation inversion was proposed for high strength steel DP600. The difference of the finite element calculation values with physical test values was obtained by simulated annealing algorithm and engineering optimization mathematical method considering the result precision and solving efficiency. Through the inversion analysis on different initial values, it is found that this solving method is of good adaptability, and error-tolerance of the inversion result can be improved greatly. Therefore, it is fit for further actual application. The Yoshida-Uemori material model parameters measured by the inversion method and verified by V-shaped bending test can be directly used in finite element to predict springback.

基金项目：

基金项目:重庆市前沿与应用基础研究项目（cstc2015jcyjA1034）

作者简介：徐杰（1981-），男，硕士，讲师 E-mail：85709201@qq.com

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