Finite element simulation method and system considering plasticity and damage constitutive relation

Abstract

The invention provides a finite element simulation method and system considering plasticity and damage constitutive relation, and the method comprises the steps: building a constitutive equation through employing continuous damage mechanics and a Johnson-Cook plastic flow criterion, so as to precisely predict the damage behavior in a metal forming and machining process. According to the method, plastic damage and a Johnson-Cook model are coupled through a strain path represented by stress triaxality and a Lode coefficient, and plastic mechanical behaviors and damage evolution in the metal forming and machining process are subjected to simulation analysis under the environments of different temperatures and loading speeds.

Description

technical field [0001] The invention relates to the technical field of material processing, in particular to a finite element simulation method and system considering plasticity and damage constitutive relations. In particular, it relates to a finite element simulation method considering plasticity and damage constitutive relations. Background technique [0002] Finite element simulation of metal forming and machining processes has a significant impact on industrial optimization and design of high-quality products, and it can use computers to virtually study machining process parameters, forming / processing tools, and even material mechanical behavior. Thereby greatly reducing the production cost and effectively shortening the design cycle. At present, it has been applied in various fields such as stress, strain, electricity, heat transfer and fluid flow. It is a numerical technique for finding approximate solutions of partial differential equations and their systems of equ...

AI Technical Summary

Problems solved by technology

Another challenge arises from the complex strain paths and environmental conditions in metal forming and processing

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