锻压技术

轴向对称鳍片管滚弯成形数值模拟

英文标题：Numerical simulation on roll bending for axially symmetrical fin tube

作者：石朋高占民陈庆敏刘宇张晓军

分类号：TG386

出版年,卷(期):页码：2020,45(9):81-86

摘要：

为探究工艺参数对轴向对称鳍片管滚弯成形质量的影响规律，利用ABAQUS软件对轴向对称鳍片管滚弯成形进行数值模拟研究。利用所建立的有限元模型对轴向对称鳍片管、圆形光管的滚弯成形过程进行数值模拟，对比分析了等效应力、等效应变的分布规律。通过外侧壁厚变化率和椭圆率曲线图以及对应的等效应力和等效应变云图，分析了压下量、下辊轮中心距和辊轮转速对轴向对称鳍片管滚弯成形质量的影响，通过分析获得了各个参数的最优取值范围。研究结果表明：通过优化工艺参数能够有效地控制成形件质量。最后通过实际实验验证了结果的正确性，说明通过对轴向对称鳍片管滚弯过程进行数值模拟分析可以获得合理的工艺参数，并可有效地指导实际生产。

In order to explore the influence laws of process parameters on the roll bending quality for axially symmetrical fin tube, the roll bending of axially symmetrical fin tube was numerically simulated and studied by software ABAQUS, and the finite element model was used to simulate the roll bending process of axially symmetrical fin tube and circular smooth tube. Then, the distribution laws of equivalent stress and equivalent strain were compared and analyzed. The influences of reduction, center distance of lower rollers and rotation speed of roller on the quality of roll bending for axially symmetrical fin tube were analyzed by the curve diagrams of variation rate for outer wall thickness and ellipticity as well as corresponding nephograms of equivalent stress and equivalent strain to obtain the optimal range of each parameter by analysis. The results show that the quality of formed parts is effectively controlled by optimizing the process parameters, and the correctness of results is verified by the actual experiment, which shows that reasonable process parameters are obtained by the numerical simulation analysis of roll bending process for axial symmetrical fin tube to effectively guide the actual production.

基金项目：

吉林省科技发展基金资助项目 (20000323)

石朋（1987-），男，硕士研究生 E-mail：spjlu5988@126.com 通讯作者：高占民（1966-），男，工学硕士，副研究员 E-mail：gzm@jlu.edu.cn

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