| 再生核质点法模拟金属镦粗过程 |
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| 引用本文： | 崔青玲,宋叔尼,刘相华,王国栋,熊尚武. 再生核质点法模拟金属镦粗过程[J]. 机械工程学报, 2005, 41(3): 76-80 |
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| 作者姓名： | 崔青玲 宋叔尼 刘相华 王国栋 熊尚武 |
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| 作者单位： | 东北大学轧制技术及连轧自动化国家重点实验室,沈阳,110004 |
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| 基金项目： | 国家973重点基础研究发展规划资助项目(G2000067208-4) |
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| 摘 要： | 介绍再生核质点法的基本原理及其在刚塑性可压缩材料体积成形中的应用,采用罚函数法处理边界条件,为使结果收敛于精确值,对积分过程采用积分修正和稳定化技术,采用Newton-Raphson方法使非线性方程线性化,对下一时间步工件的形状可以用更新的节点坐标计算,模拟了二维平面镦粗过程,模拟结果与实际变形情况相符,说明该方法的有效性。
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| 关 键 词： | 无网格 再生核质点法 刚塑性可压缩材料 镦粗 |
| 修稿时间： | 2004-04-02 |
SIMULATION OF UPSETTING PROCESS BY REPRODUCING KERNEL PARTICLE METHOD |
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| Cui Qingling,Song Shuni,Liu Xianghua,Wang Guodong,Xiong Shangwu. SIMULATION OF UPSETTING PROCESS BY REPRODUCING KERNEL PARTICLE METHOD[J]. Chinese Journal of Mechanical Engineering, 2005, 41(3): 76-80 |
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| Authors: | Cui Qingling Song Shuni Liu Xianghua Wang Guodong Xiong Shangwu |
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| Abstract: | The principle of the reproducing kernel particle meshless(RKFM) method and its application in metal forming process are presented. Using the penalty method to impose the essential boundary conditions, corrected integration and stablization technique are used in the integration process. The Newton-Raphson method is used to linearization the system equation. The deformable shape of the workpiece in next time step is calculated with the updated nodal coordinate. The results obtained from simulation of two dimensional upsetting process test the validity of the reproducing kernel particle method . |
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| Keywords: | Meshless Reproducing kernel particle method Rigid slightly compressible material Upsetting |
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