| 基于配点型无网格法的金属体积成形过程数值模拟 |
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| 引用本文： | 温宏宇,董湘怀,虞松,阮雪榆.基于配点型无网格法的金属体积成形过程数值模拟[J].中国机械工程,2006,17(16):1716-1718,1755. |
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| 作者姓名： | 温宏宇 董湘怀 虞松 阮雪榆 |
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| 作者单位： | 上海交通大学,上海,200030 |
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| 摘 要： | 基于配点型无网格法的基本原理，阐述了采用配点型无网格法求解偏微分方程的步骤和方法，推导了刚塑性二维轴对称问题的配点型无网格法求解公式。以汽车气门弹簧座冷挤压过程为例，对金属体积成形的塑性变形情况进行了模拟分析。算例表明，配点型无网格法不需要借助背景网格或有限元网格进行数值积分，解决了伽辽金型无网格法计算效率低的问题。计算结果与有限元法比较接近，说明配点型无网格法用于金属塑性大变形过程数值模拟是可行性的。
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| 关 键 词： | 体积成形 刚塑性 无网格法 重构核近似 配点法 |
| 文章编号： | 1004-132X（2006）16-1716-03 |
| 收稿时间： | 2005-09-06 |
| 修稿时间： | 2005-09-06 |
Collocation-based Meshfree Method for Metal Bulk Forming Process Simulation |
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| Wen Hongyu,Dong Xianghuai,Yu Song,Ruan Xueyu.Collocation-based Meshfree Method for Metal Bulk Forming Process Simulation[J].China Mechanical Engineering,2006,17(16):1716-1718,1755. |
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| Authors: | Wen Hongyu Dong Xianghuai Yu Song Ruan Xueyu |
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| Affiliation: | Shanghai Jiao Tong University, Shanghai, 200030 |
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| Abstract: | The basic principle of collocation-based meshfree method, the steps and method to solve the partial differential equations were discussed. The formulas for rigid-plastic problem based on reproducing kernel approximation and collocation method were deducted. A meshfree analysis of a 2-D axisymmetric metal bulk forming problem was implemented. No background mesh for integration, the low efficiency problem in Galerkin-based meshfree method are avoided. The solution of symmetric cold forge problem was compared with a sonable results have been obtained. conventional finite element solution, and the reasonable results have been obtained. |
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| Keywords: | bulk forming rigid- plastic meshfree method reproducing kernel approximation collocation method |
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