| 角铝型材挤压过程的数值模拟 |
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| 引用本文： | 闫洪,包忠诩,柳和生,罗忠民.角铝型材挤压过程的数值模拟[J].中国有色金属学报,2001,11(2):202-205. |
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| 作者姓名： | 闫洪 包忠诩 柳和生 罗忠民 |
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| 作者单位： | 南昌大学 机电工程学院, |
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| 基金项目： | 江西省教委重大科技资助项目； 南昌大学基金资助项目 |
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| 摘 要： | 采用大变形弹塑性有限元理论，对角铝型材挤压过程进行了数值模拟，分析了型材挤压过程中各阶段的网络畸变情况，给出了挤压变形时的流速、应变和应力分布，揭示了造成异型型材挤压时出现扭拧、波浪和弯曲等缺陷的重要原因是变形体内存在一个涡流场，模拟结果为正确地设计型材挤压模具和工艺参数的选择提供了可靠依据。
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| 关 键 词： | 角铝型材 挤压 数值模拟 弹塑性有限元 |
| 文章编号： | 1004-0609(2001)02-0202-04 |
| 修稿时间： | 2000年7月7日 |
Numerical simulation of angle aluminum profile extrusion processes |
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| YAN Hong,BAO Zhong-xu,LIU He-sheng,LUO Zhong-min.Numerical simulation of angle aluminum profile extrusion processes[J].The Chinese Journal of Nonferrous Metals,2001,11(2):202-205. |
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| Authors: | YAN Hong BAO Zhong-xu LIU He-sheng LUO Zhong-min |
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| Abstract: | An angle aluminum profile extrusion processes was done by numerical simulation with large deformation elastoplastic finite element theory, and the mesh distortion of different stages of profile extrusion processes were described in detail, the distributions of stress and strain field were also obtained. It is pointed out that the cross cracking, bending, distorting and twisting on the asymmetry extruded profile are caused by a vortex flow field in the deforming body of extrusion processes. The simulating results can be applied to design of dies and the selection of technological parameters for the aluminum profile extrusion processes. |
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| Keywords: | angle aluminum profile extrusion numerical simulation elastoplastic finite element method |
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