航天推进技术研究院主办
ZHU Chenglong,ZHANG Jie,HE Kangkang,et al.Finite element numerical simulation analysis on section distortion in bending process of tube[J].Journal of Rocket Propulsion,2015,41(05):77-82.
弯管成型截面畸变有限元数值仿真分析
- Title:
- Finite element numerical simulation analysis on section distortion in bending process of tube
- 分类号:
- V434-34
- 文献标志码:
- A
- 摘要:
- 管材数控绕弯精确成型技术是管材生产的重要手段,同时也是一个多因素耦合交互作用的复杂力学过程。加工过程中存在着截面畸变、起皱、壁厚变化和回弹等多个工艺问题,这些问题严重影响了管材的成型精度。利用有限元数值仿真的方法,模拟管材绕弯加工的工艺过程,通过大量计算,得到管材与模具之间的摩擦系数、压力和管材进给率等工艺参数对成型问题的影响规律,为生产实际提供指导,同时为后续对工艺参数的优化打下基础。为此,基于ANSYS / LS_DYNA 建立了管材绕弯成型过程的有限元仿真流程。在此基础上通过有限元分析,对不同工艺参数下的管材绕弯加工过程展开大量计算,研究了工艺参数对截面畸变的影响规律。
- Abstract:
- NC rotary draw bending process of tube is a widely used manufacturing method in industry. However, the whole process is a complex mechanics process with several factors coupling interaction. It usually results in section distortion, wrinkling, thickness variation and springback, which seriously affect the forming precision of the tube product. The present research is trying to use an FEM numerical simulation method to simulate the manufacture process, and then to detect the effect of process parameters (such as friction coefficient between tube and molds, load of pressure die, feeding percents of tube, etc.) on the bending forming of tube. The current research builds an FEA simulation procedure under ANSYS / LS_DYNA environment, and develops a simplified analytical method to validate the FEM process. Based on such FEM procedure, the research computes manufacturing process of tube bending was calculated with different technological parameters. The effect of
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备注/Memo
收稿日期:2015-06-18;修回日期:2015-09-04 作者简介:朱成龙(1982—),男,硕士,工程师,主要研究领域为液体姿轨控发动机总体设计