T型三通多向模锻过程变形力预测方法  

Deformation force prediction method of tee valve in multi-directional die forging process

作　　者：姜雪鹏 潘晴[1,2] 李毅波[1,2] 朱晓宁 JIANG Xue-peng;PAN Qing;LI Yi-bo;ZHU Xiao-ning(State Key Laboratory of High Performance and Complex Manufacturing,Central South University,Changsha 410083,China;College of Mechanical and Electrical Engineering,Central South University,Changsha 410083,China)

机构地区：[1]中南大学高性能复杂制造国家重点实验室,湖南长沙410083 [2]中南大学机电工程学院,湖南长沙410083

出　　处：《塑性工程学报》2021年第5期113-125,共13页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(51805551);湖南省自然科学基金资助项目(2019JJ50799)。

摘　　要：提出了一种基于主应力法和能量法的多向模锻过程变形力的实时预测方法。该方法分别在垂直和水平锻造方向上划分了若干成形子阶段。通过分析基元体平衡方程和边界条件,建立子阶段成形变形力与多轴冲头速度、位移、成形界面摩擦系数等成形要素之间的表达关系,从而实现全过程多向锻造变形力的实时预测。结果表明,利用该方法进行三通类锻件变形力预测与Deform仿真结果吻合度较高,验证了该预测方法的有效性;同时,通过与不同材料和形状的T型三通锻件成形的实验和仿真算例进行对比分析,验证了该预测方法的合理性和普遍适用性。A real-time prediction method of deformation force was proposed in multi-directional die forging process based on principal stress method and energy method. Several forming sub-stages were divided for the vertical and horizontal forging directions by this method.By analyzing the basic element body balance equation and boundary conditions,the expression relationship between the sub-stage forming deformation force and the multi-axis punch speed,displacement,friction coefficient of forming interface and other forming elements was established,and the real-time multi-directional forging deformation force in the whole process prediction was realized. The results show that the prediction of the deformation force of the tee valve forgings using this method is in good agreement with the Deform simulation results,which verifies the effectiveness of the prediction method;at the same time by comparing and analyzing,the experiments and simulation examples of tee value forgings with different materials and shapes,the rationality and general applicability of the prediction method are verified.

关 键 词：T型三通 多向模锻 主应力法 能量法 变形力 

分 类 号：TG316.3[金属学及工艺—金属压力加工]