铝合金厚板淬火过程换热系数的求解与验证

Solution and Validation of Heat Conduct Equation for Aluminum Alloy Ultra-thickness Plate During Quenching

在铝合金厚板淬火过程的数值模拟中,换热系数的正确求解是工件温度场、应力场模拟结果和实验相符的先决条件。分析换热系数反求法的数学模型,并采用MATLAB编程实现该数学模型的求解。用求得的换热系数作为MSC·MARC建立的有限元模型的边界条件,计算试件的温度场变化曲线,计算结果和实测数据基本吻合。

In numerical simulation of the quenching process for aluminum alloy ultra-thickness plate, the correct solution of heat transfer coefficient is the precondition of simulating and measuring results of temperature field and stress field. A mathematical model of inverse problem of heat conduct equation was analyzed and founded by MATLAB, upon which we＇ve got the heat transfer coefficient and it is used as boundary condition for finite element model ofMSC. MARC. The calculated temperature field and the measured temperature field are very near to each other.