一种快速模拟复杂冲压件成形过程的截面分析单元

吉林大学学报(工学版) ›› 2000, Vol. 30 ›› Issue (02): 24-27.

• 论文 • 上一篇

一种快速模拟复杂冲压件成形过程的截面分析单元

那景新¹, 曹颖¹, 阎亚坤¹, 胡平²

1. 吉林工业大学理学院, 吉林长春130025;
2. 吉林工业大学计算中心, 吉林长春130025

收稿日期:1999-10-08 出版日期:2000-04-25 发布日期:2000-04-25
作者简介:那景新(1957- ),男,黑龙江哈尔滨人,吉林工业大学副教授
基金资助:
国家自然科学基金重点资助项目(19832020)

Section Analysis Element for Quick Simulation of Complex Stamping Process

NA Jing-xing¹, CAO Ying¹, YAN Ya-kun¹, HU Ping²

1. College of Sciences, Jilin University of Technology, Changchun130025, China;
2. Computer Center, Jilin University of Technology, Changchun130025, China

Received:1999-10-08 Online:2000-04-25 Published:2000-04-25

摘要/Abstract

摘要：

基于有限变形虚功率增量原理的弹塑性大变形有限元理论,建立了两节点高效率平面应变板壳单元截面分析模型,并应用非均匀有理B样条曲线描述模具截面线进行接触判断,能快速获得较理想的板料冲压成形模拟结果。并以某发动机油底壳为例,把截面分析结果与三维分析结果、实验结果进行对比,验证了截面分析技术的可行性和高效性。

关键词: 截面分析, 平面应变板壳单元, 非均匀有理B样条曲线, 快速接触判断

Abstract:

Using elasto-plastic large deformation FEM based on finite deformation virtual power-rate, a kind of two-node plane-strain shell element model for section analysis is constructed. The section line of the tool is described by NURBS for contact judgement, whose aims is to get ideal result of blank sheet stamping simulation quickly. With an oil pan used in car as an example, the result of section analysis is compared with the results of 3D analysis and experiment. The feasibility and efficiency of the section analysis technology is verified.

Key words: section analysis, plane-strain shell element, NURBS, quick contact judgement

中图分类号:

TG302

那景新, 曹颖, 阎亚坤, 胡平. 一种快速模拟复杂冲压件成形过程的截面分析单元[J]. 吉林大学学报(工学版), 2000, 30(02): 24-27.

NA Jing-xing, CAO Ying, YAN Ya-kun, HU Ping. Section Analysis Element for Quick Simulation of Complex Stamping Process[J]. 吉林大学学报(工学版), 2000, 30(02): 24-27.

参考文献

[1] 富田佳宏.数值弹塑性力学［M］胡平,李运兴,柳玉起译长春:吉林科学技术出版社,1995.

[2] 施法中.计算机辅助几何设计与非均匀有理B 样条［M］. 北京:北京航空航天大学出版社,1994

[3] 陈森灿,叶庆荣.金属加工原理［M］. 北京:清华大学出版社,1991.

[4] Michler J R, Weinmann K J. Experimental and finite element study of sheet metal flow in a strip test apparatus with controllable drawbead penetration［J］. NAMRI/SME,1995, 23:45-50.

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一种快速模拟复杂冲压件成形过程的截面分析单元

Section Analysis Element for Quick Simulation of Complex Stamping Process

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