基于SPH法纯镁包套等通道挤压三维数值模拟

薄延强; 王晨晨; 王涵; 阎佩雯; 牛晓峰

doi:10.15980/j.tzzz.2019.11.011

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基于SPH法纯镁包套等通道挤压三维数值模拟
3D Numerical Simulation of Pure Magnesium during ECAP of Can Based on SPH
2019年39卷第11期页码：1198-1201
纸质出版日期： 2019 ，
DOI： 10.15980/j.tzzz.2019.11.011

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[1]薄延强,王晨晨,王涵,阎佩雯,牛晓峰.基于SPH法纯镁包套等通道挤压三维数值模拟[J].特种铸造及有色合金,2019,39(11):1198-1201.

Bo Yanqiang, Wang Chenchen, Wang Han, et al. 3D Numerical Simulation of Pure Magnesium during ECAP of Can Based on SPH[J]. Special Casting & Nonferrous Alloys, 2019,39(11):1198-1201.
[1]薄延强,王晨晨,王涵,阎佩雯,牛晓峰.基于SPH法纯镁包套等通道挤压三维数值模拟[J].特种铸造及有色合金,2019,39(11):1198-1201. DOI： 10.15980/j.tzzz.2019.11.011.

Bo Yanqiang, Wang Chenchen, Wang Han, et al. 3D Numerical Simulation of Pure Magnesium during ECAP of Can Based on SPH[J]. Special Casting & Nonferrous Alloys, 2019,39(11):1198-1201. DOI： 10.15980/j.tzzz.2019.11.011.

摘要

采用无网格光滑动力学法（SPH）

并自行编写程序对室温下包套等通道挤压过程进行数值模拟

通过与试验结果对比分析

验证了所建SPH法模拟结果的准确性。结果发现

同等挤压条件下5052铝合金包套材料对纯镁的保护作用较差

工件开裂。相比于5052铝合金外部包套材料

纯铁包套通过三向压应力对内部纯镁工件保护更好

可得到变形更加均匀、完整的纯镁挤压件。

Abstract

The meshless SPH method was used to simulate the ECAP process of can at room temperature based on the developed program.Through comparing with the experimental ones

the simulated results obtained by the SPH program were well in agreement with ones.The results reveal that under the same extrusion conditions

5052 aluminum alloy cladding material can’t protect pure magnesium

so the workpiece is cracked.Compared with the outer cladding material of 5052 aluminum alloy

the pure iron cladding provides better protection for the internal pure magnesium workpieces through the three-way compressive stress

which can be obtained more uniform deformation and complete pure magnesium extruded parts.