Research on key technologies of FEM simulation of temperature field in the process of quenching
In the paper, some key technologies of computing the quenching temperature field are given. According to the characteristics of quenching process, a new method of computing phase-transformation latent heat is presented in order to ensure the computation accuracy of temperature. The phase-transform latent heat is regarded as the internal heat source because it can result in the rise of temperature in the process of cooling. A new method of self-control and adaptive time-step is presented in the paper, this method can be used to compute the time-step according to maximum and minimum difference values of temperature field between the previous simulating step and the current simulating step. A FEM software for evaluating the temperature and phase-transformation is developed using the methods presented in this paper, the lump parameters method and fine mesh method. The experiment results or analytical values of two cases are used to check the accuracy of FEM simulation. The comparisons show that the simulation results of FEM software are consistent with experimental results or analytical values.
Quenching Temperature field Finite element method Simulating
LI Huiping HE Lianfang ZHAO Guoqun
School of Materials Science and Engineering, Shandong University, Jinan, Shandong 250061
国际会议
郑州
英文
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）