圆柱体工件高压气淬过程中的数值模拟  

Numerical simulation of cylindrical workpiece during high-pressure gas quenching

作　　者：王志坚[1] 徐成海[1] 李福忠[1] 李孟春[2] 白玉石[2] 

机构地区：[1]东北大学机械工程及自动化学院 [2]沈阳真空技术研究所,辽宁沈阳110042

出　　处：《真空》2004年第6期15-18,共4页Vacuum

摘　　要：利用导热微分方程和单值性条件推导了轴对称短圆柱体温度分布的通用数学微分方程,可计算工件上任意点的温度和任意时间的温度分布;采用伽辽金(Galerkin)加权余量法推导了二维轴对称圆柱体瞬态温度场的有限元计算的积分方程;采用大型有限元计算软件ANSYS对5Cr1MoV轴对称实心圆柱体工件淬火过程的温度变化及热应力/应变分布状况进行了模拟计算。The heat-transfer differential equation and assumption of single-valued conditions are taken up to derive a general differential expression for the temperature distribution that is symmetrical to the axis of a short cylinder, by which the temperature at any point of a cylindrical workpiece and the temperature distribution at any time can both be calculated. Then, an integral equation is derived expressing the transient temperature field of a 2D-axisymmetric workpiece for its FEM analysis by means of Galerkin's weighted residue method. A numerical simulation is thus conducted using ANSYS program to calculate the temperature change and thermal stress/strain distribution of a Φ60×120 mm solid axisymmetrically cylindrical 5Cr1MoV workpiece in gas-quenching process.

关 键 词：真空高压气淬 数学模型 有限元法 温度场 应力/应变场 

分 类 号：TG156.3[金属学及工艺—热处理]