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金属热成形过程的综合数值模拟
引用本文:崔振山,徐秉业,刘才.金属热成形过程的综合数值模拟[J].工程力学,2002,19(1):42-46.
作者姓名:崔振山  徐秉业  刘才
作者单位:1. 清华大学工程力学系,北京,100084
2. 燕山大学机械工程学院,秦皇岛,066004
基金项目:教育部博士点专项基金(98021603),河北省自然科学基金(500216)
摘    要:金属在热成形过程中的微观组织演变是影响产品力学性能的关键因素,该演变过程取决于温度、应变和应变速率。本文基于有限变形理论和微观组织演变的数学模型,建立了能够模拟变形过程、温度变化过程和微观组织演变过程的有限元法,研制了通用的三维有限元计算软件,并在H型钢三维热轧模拟方面进行了深入开发,给出了原材料为C-Mn钢的H型钢热轧过程综合模拟结果。综合对比了8组不同工艺下的热轧实验结果和计算机模拟结果,二者均吻合良好,表明本文方法能够较好地预报金属热成形过程。

关 键 词:有限元方法  数值模拟  微观组织  热成形
文章编号:1000-4750(2002)01-042-05

AN OVERALL NUMERICAL SIMULATION OF HOT METAL FORMING
CUI Zhen-shan,XU Bing-ye,LIU Cai.AN OVERALL NUMERICAL SIMULATION OF HOT METAL FORMING[J].Engineering Mechanics,2002,19(1):42-46.
Authors:CUI Zhen-shan  XU Bing-ye  LIU Cai
Affiliation:CUI Zhen-shan1,XU Bing-ye1,LIU Cai2
Abstract:The microstructure evolution, which is governed by temperature, strain and strain rate during hot metal forming, is a key factor to the mechanical properties. Based on the finite deformation theory and a microstructure model, the paper establishes a finite element method to simulate the deformation process, temperature variation and microstructure evolution. A 3-D finite element software for general use is developed. The simulation of hot rolling process of H-beam is especially studied. As an example, the simulation results of a C-Mn steel H-beam undergoing hot rolling are comprehensively displayed. 8-groups of experimental data under different hot rolling schedules are compared with numerical simulation results. Satisfactory agreement is reached between numerical predictions and experimental data, indicating that the present method is capable of predicting the hot metal forming with good accuracy.
Keywords:finite element method  numerical simulation  microstructure  hot process
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