| 板材多点弯曲过程及回弹现象的数值模拟 |
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| 引用本文： | 李淑慧,李明哲,蔡中义,姚建国.板材多点弯曲过程及回弹现象的数值模拟[J].农业机械学报,2000,31(1):112-115. |
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| 作者姓名： | 李淑慧 李明哲 蔡中义 姚建国 |
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| 作者单位： | 1. 吉林工业大学辊锻工艺研究所,130025,长春市
2. 吉林工业大学研究生部 |
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| 基金项目： | 教育部跨世纪优秀人才基金!（项目编号： 9721109136），国家863／CIM S主题资助!（项目编号： 863－511－820 |
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| 摘 要： | 以柱面弯曲为例，利用工算法对多点成形过程进行了模拟，并与静态隐式算法相结合，对板条多点成形回弹现象的主要影响因素进行了分析。同时，对利用动态松弛算法和静态隐式算法回弹分析结果及ＣＰＵ时间进行了对比，证明了隐式算法计算回弹的高效与合理。
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| 关 键 词： | 板材 弯曲 回弹 数值模拟 柱面隐式算法 |
| 修稿时间： | 1999-03-03 |
Numerical Simulation of Multi-point Bending and Spring Back Processes of Sheet Metal Parts |
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| Li Shuhui,Li Mingzhe,Cai Zhongyi,Yao Jianguo.Numerical Simulation of Multi-point Bending and Spring Back Processes of Sheet Metal Parts[J].Transactions of the Chinese Society of Agricultural Machinery,2000,31(1):112-115. |
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| Authors: | Li Shuhui Li Mingzhe Cai Zhongyi Yao Jianguo |
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| Institution: | Jilin University of Technology |
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| Abstract: | In this paper, the two methods are investigated to simulate multi point bending and subsequently spring back processes. One is the dynamic relaxation method with explicit FE code and the other is the BFGS method with implicit FE code. The solutions of the two methods coincide well, however the later is more effective and economical. So the explicit FE code is used to model the multi point forming process and the implicit FE code is used to model the subsequent spring back process. The influence of different factors, such as blank material, thickness, punch force, and the forming technology, on the spring back and shape precision of multi point cylindrically bending process is simulated in detail. |
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| Keywords: | Sheet metal Bending Spring back Numerical simulation |
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