Abstract
This paper advances a new optimization method about material constitutive equation on the basis of physical simulation and numerical simulation results which basic thinking can be described as the following: through comparing the results of the material deformation process under actual experimental conditions and virtually simulated by the finite element numerical simulation method with the constitutive equation established on the basis of the physical simulation, the constitutive equation established by the experimental data is optimized in turn. Based on it, this paper advances a visco/plastic constitutive equation to depict the semi-solid thixo-forming and the constitutive equation is analyzed and optimized through coupling of the physical simulation and numerical simulation. It is observed that this method can effectively eliminate the influence of the factor outside material itself on the constitutive equation. So, it can exactly depict the deformation behavior of the materials and improve the accuracy and reliability of the numerical simulation.
| Original language | English |
|---|---|
| Pages (from-to) | 402-407 |
| Number of pages | 6 |
| Journal | Materials Science Forum |
| Volume | 575-578 PART 1 |
| DOIs | |
| State | Published - 2008 |
| Event | 5th International Conference on Physical and Numerical Simulation of Materials Processing, ICPNS'07 - Zhengzhou, China Duration: 23 Oct 2007 → 27 Oct 2007 |
Keywords
- Constitutive equation
- Hot working
- Numerical simulation
- Optimization
- Physical simulation