模具技术Issue(2)：80-84,5.
7075铝合金数值模拟本构方程准确性评估
Study on constitutive equation of 7075 aluminum alloy numerical simulation based on strain correction
摘要
Abstract
Based on the high temperature tensile test of 7075 aluminum alloy,the comprehensive effects of deformation temperature,strain rate,high temperature work hardening and dynamic recovery softening on the flow stress of aluminum alloy at high temperature are characterized,and the Arrhenius constitutive equation and Cowper Symonds constitutive equation based on strain correction are established.Their parameters are solved and calculated,and their ability to predict the flow stress is evaluated,The results show that the Cowper-Symonds constitutive equation not only has higher R value than the modified Arrhenius constitutive equation,but also has lower AARE value.It has better prediction ability,and the solution process is simple,which can be more easily applied to numerical simulation.关键词
7075铝合金/数值模拟/本构方程/流变应力Key words
7075 aluminum alloy/numerical simulation/constitutive equation/rheological stress分类
矿业与冶金引用本文复制引用
孔敏,潘志慧,胡莎,易凤临,何琴..7075铝合金数值模拟本构方程准确性评估[J].模具技术,2025,(2):80-84,5.基金项目
文华学院科研项目(编号:2023Y03). （编号:2023Y03）
