铝合金铸件凝固过程效应力数值模拟

程军; 程眉; 党惊知; 郭力佳

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铝合金铸件凝固过程效应力数值模拟
Numerical Simulation of Thermal Stress in Al-Si Alloy Castings During Solidification Process
1995年第5期
纸质出版日期： 1995 ，
DOI：

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[1]程军,程眉,党惊知,郭力佳.铝合金铸件凝固过程效应力数值模拟[J].特种铸造及有色合金,1995(05):1-4.

Numerical Simulation of Thermal Stress in Al-Si Alloy Castings During Solidification Process[J]. Special Casting & Nonferrous Alloys, 1995,(5).
[1]程军,程眉,党惊知,郭力佳.铝合金铸件凝固过程效应力数值模拟[J].特种铸造及有色合金,1995(05):1-4. DOI：

Numerical Simulation of Thermal Stress in Al-Si Alloy Castings During Solidification Process[J]. Special Casting & Nonferrous Alloys, 1995,(5). DOI：

摘要

通过铝硅合金准固态力学行为和流变性能的测试，获得了该合金铸件凝固过程应力应变本构方程。并在此基础上开发了考虑材料高温力学性能，分析三维轴对称铸件凝固过程热粘弹塑性问题的热应力模拟程序，对带热节铝硅合金铸件的计算表明，计算结果与实验结果吻合较好。

Abstract

In this paper

the stress-strain mathematical equation during solidification process of Al-Si alloy castings was obtained

based on the experimental study of the semisolid mechanical and rheologic properties of the alloy.A numerical simulation program of the thermal stresses of 3-D axisymetric Al-Si alloy castings has been developed

which can be used to solve the thermoelastoviscoplasticity problem related to the high temperature mechanical properties of the material. The behavior of Al-Si alloy casting with a hot spot predicted by computation was consistent with the experimental results.