锻压技术

机体座多向模锻精密成形的数值模拟

英文标题：Numerical simulation of multi-directional precision forging process of body frame

作者：刘兵周志明黄伟九汪红川罗荣张宝亮

单位：重庆理工大学汽车零部件先进制造技术教育部重点实验室重庆市模具技术重点实验室重庆市建设工业集团有限责任公司

分类号：TG31

出版年,卷(期):页码：2015,40(11):19-22

摘要：

应用CAE有限元模拟仿真软件Deform-3D，对机体座多向模锻成形过程进行数值模拟。分析了产品的成形特点、产品成形过程中金属的流动规律、应力、应变场以及时间-载荷变化曲线，并进行生产验证，得到试制产品。研究结果表明，金属材料流动充填效果整体较好，产品成形饱满，单件产品的成形时间为1.3 s，整个成形过程所需载荷变化大体平缓，只是在0.5和1.1 s处出现骤增现象，最大成形载荷约为2270 kN，试制产品与模拟结果具有较好的一致性，机体座的形状合格，飞边合理，材料流动情况与模拟结果吻合较好。

The multi-directional forging process of body frame was conducted by finite element simulation software Deform-3D, and the forming properties, the metal flowing rule，the effective strain, the stress distribution and the curve of pressing load were analyzed. The trial products were obtained when the production verification was done. The results show that the metal material fills well, and the qualified product is obtained. The total forming time of a single product is about 1.3 s, and the required load changes gently during the whole forming process. However, sharp increase appears at 0.5 s and 1.1 s, and the maximum forming force is about 2270 kN. The trial products and the simulation results have a good consistency. The shape of body frame is qualified and the flash is reasonable. The flow of materials is in good agreement with that of simulation.

基金项目：

重庆市科技攻关项目(cstc2014yykfB60004); 重庆市模具技术重点实验室开放基金资助项目

刘兵（1989-），男，硕士研究生周志明(1976-)，男，博士，教授

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