第42卷第3期 Vol. 42No.3
假压技术
FORGING &STAMPINGTECHNOLOGY
多点渐进成形工艺数值模拟及实验对比
刘志芳，罗远新2
2017年3月 Mar.
2017
（1.重庆理工大学机械工程学院，重庆400050；2.重庆大学机械传动国家重点实验室，重庆400030）
摘要：针对成形大尺寸船板需要大设备的间题，以多点渐进成形方法为研究对象，该方法既有单点渐进成形的由局部变形累计成总体变形的特点，又有多点成形模具自由重构的特点。采用数值模拟法仿真了4种不同的成形工艺产生的成形效果，同时展开了相同工况的实验研究，将实验结果在三维扫描仪下进行测量，然后对比验证了数值模拟的仿真结果。研究结果表明：对于双曲率船板而言，两侧多点同步驱动的成形方案比一则先调整好位置、另外一侧再依次驱动的方案要优越，成形路径对
成形效果的影响不太明显，压头的驱动方式对成形力的历史变化影响显著。关键词：多点渐进成形；双曲率曲面；大尺寸船用外板；成形路径；驱动方式 DOI: 10. 13330/j. issn. 1000-3940. 2017. 03, 019
中图分类号：TG386
文献标识码：A
文章编号：1000-3940（2017）03-0096-07
Numericalsimulationandexperimentalvalidationofmulti-point
incrementalformingtechnology
Liu Zhifang', Luo Yuanxin?
(1. College of Mechanical Engineering, Chongqing University of Technology, Chongqing 400050, China; 2. The State Key Lab, of Mechanical Transmission, Chongqing University, Chongqing 400030, China)
Abstract: The large plate requires to be fomed by large size foming equipment, and the multi-point foming has the characteristics of both aceumulated forming effect from the single point incremental forming and free reconstruction of multi-point forming die, Then, the forming effects were simulated numerically by four different forming technologies, and the experimental researches were carried out. Fur-thermore, the experimental results were scanned by a 3D laser scanner and compared with simulated results. The results indicate that the foming method by moving both side pins together is better than that by first adjusting one side pin position and then moving it for a double curvature plate, The influence of the forming path on the forming effect is unobvious, but the gradual changes of foming force are greatly affected by the driving model of pins.
Key words: multi-point incremental foming; double curved surface; large size hull plate; foming path; driving model
为了提高船舶在海洋中运行的机动性，船身需
收稿日期：20161010；修订日期：2016-12-30 基金项目：重庆市教委科学技术研究项目（KJ1600941）
作者简介：刘志芳（1984-），男，博士，讲师 E-mall; liuzhifang@ cqut, edu. c
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