铝合金压铸件凝固过程中的瞬态温度场分析

Analysis of transient temperature distribution of solidification processes in aluminium die casting

建立了铝合金压铸件的有限元模型,确定了温度场模拟的初始条件和边界条件;结合材料的热物性,利用AN-SYS软件对A380.0铝合金压铸件凝固过程中的温度场进行了模拟,得到了铸件各点温度随时间变化的规律,模拟结果反映了铸造系统温度的变化过程。结果表明:利用ANSYS模拟温度场运算速度快、结果比较准确,为热应力分析提供了温度场条件,并给压铸优化设计提供了依据。

The finite element mould of the die-casting aluminium alloy is established and the initial conditions and boundary conditions are determined. Combine with the nonlinear thermophysics parameters of material, temperature field distribution in the solidification process of A380.0 alloy die casting has been simulated by ANSYS software, and the relationship between temperature of cast- ing and time is obtained. The simulation result has reflected the temperature change in the casting process. The result shows the fi- nite element analysis software ANSYS has quick computing speed and well simulation result, which give a reference for optimization design of thermal stress distribution and dieasting.