| 基于配点型无网格法的金属挤压过程数值模拟 |
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| 引用本文： | 温宏宇,董湘怀,阮雪榆.基于配点型无网格法的金属挤压过程数值模拟[J].塑性工程学报,2006,13(2):57-59. |
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| 作者姓名： | 温宏宇 董湘怀 阮雪榆 |
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| 作者单位： | 上海交通大学塑性成形工程系,上海,200030 |
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| 摘 要： | 阐述了配点型无网格法的基本原理,及其用于求解偏微分方程的步骤和方法,对Al在挤压成形过程中的塑性变形情况进行了三维无网格法模拟。该方法避免了有限元法因网格畸变需要重新划分网格的问题,同时解决了伽辽金型无网格法计算效率低的问题。计算实例表明,配点型无网格法可以利用初始节点完成全部计算,得到与有限元法相吻合的结果,是模拟金属塑性变形过程的一种有效的新方法。
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| 关 键 词： | 挤压成形 无网格法 核近似 配点法 |
| 文章编号： | 1007-2012（2006）02-0057-03 |
| 收稿时间： | 2005-07-03 |
| 修稿时间： | 2005-12-16 |
Collocation-based meshfree method for metal extrusion process simulation |
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| WEN Hong-yu,DONG Xiang-huai,RUAN Xue-yu.Collocation-based meshfree method for metal extrusion process simulation[J].Journal of Plasticity Engineering,2006,13(2):57-59. |
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| Authors: | WEN Hong-yu DONG Xiang-huai RUAN Xue-yu |
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| Affiliation: | Dept. of Plasticity Forming Eng. , Shanghai Jiaotong Univ. , Shanghai 200030 China |
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| Abstract: | The basic principle of collocation-based meshfree method, the steps and method to solve the partial differential equations are discussed. A meshfree analysis of a 3-D Aluminum extrusion problem is implemented. The remesh problem in FEM to prevent excessive mesh distortion and the low efficiency in Galerkin-based meshfree method are avoided. Comparison with FEM of numerical results shows the precision and efficiency of the collocation-based method. |
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| Keywords: | extrusion meshfree method kernel approximation collocation method |
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