[1]魏坤霞,马志俊,魏伟,等.纯铝T型等通道变形有限元模拟研究[J].常州大学学报(自然科学版),2016,(06):68-72.[doi:10.3969/j.issn.2095-0411.2016.06.013]
　WEI Kunxia,MA Zhijun,WEI Wei,et al.Finite Element Analysis of Pure Aluminum Processed by T-Shaped Equal Channel Angular Pressing[J].Journal of Changzhou University(Natural Science Edition),2016,(06):68-72.[doi:10.3969/j.issn.2095-0411.2016.06.013]
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纯铝T型等通道变形有限元模拟研究()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
期数:
2016年06期
页码:
68-72
栏目:
材料科学与工程
出版日期:
2016-11-30

文章信息/Info

Title:
Finite Element Analysis of Pure Aluminum Processed by T-Shaped Equal Channel Angular Pressing
作者:
魏坤霞1; 2; 马志俊1; 魏伟1; 2; 杜庆柏1; 胡静1; 2
1.常州大学 材料科学与工程学院,江苏 常州 213164; 2.江苏省材料表面科学与技术重点实验室,江苏 常州 213164
Author(s):
WEI Kunxia 1; 2;  MA Zhijun1;  WEI Wei1; 2;  DU Qingbo1;  HU Jing1; 2
1.School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China; 2.Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou 213164, China
关键词:
T型等通道变形;  纯铝;  有限元分析;  载荷-位移;  应力应变分布
Keywords:
T-shaped equal channel angular pressing;  pure Al;  finite element analysis;  load-displacement;  distribution of stress and strain
分类号:
TG 146.21; TG 379
DOI:
10.3969/j.issn.2095-0411.2016.06.013
文献标志码:
A
摘要:
对纯铝T型等通道变形(T-ECAP)进行了三维DEFORM有限元模拟分析和实验验证,研究了摩擦系数和挤压速度对载荷-位移曲线、应力应变分布的影响规律。随着摩擦系数的增加,T-ECAP变形最大载荷增大,模拟载荷-位移曲线与实测曲线的变化趋势基本一致,分析了实测结果偏离模拟结果的可能原因。变形区的等效应力数值大于其他部位,挤压速度对变形区中的最大等效应力影响不大。等效应变主要分布在变形区和坯料底部的中心区域,且最大等效应变集中在坯料底部的中心区域。
Abstract:
Finite element analysis was carried out on pure Al during T-shaped equal channel angular pressing(T-ECAP)by DEFORM-3D software, and the simulation results were verified by the actual experiment. Effect of friction coefficient and pressing speed on load-displacement curves and distribution of stress and strain were investigated. With an increase of friction coefficient, the maximum load of T-ECAP increases. The variation tendency of the simulated load-displacement curves is almost consistent with the measured curves. The possible reasons were analyzed for the deviation of the measured load-displacement curves to the simulated load-displacement curves. The equivalent stress in plastic deformation zone is larger than that in the other zone. The pressing speed has little effect on the maximum equivalent stress. The equivalent strain is mainly distributed in the plastic deformation zone and the center zone in the bottom of billet. The maximum equivalent strain is in the center zone in the bottom of billet.

参考文献/References:

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相似文献/References:

[1]魏坤霞,史庆南,魏伟,等.室温累积叠轧技术对纯铝板材力学性能的影响[J].常州大学学报(自然科学版),2004,(04):40.
[2]魏 伟,马志俊,魏坤霞,等.T型ECAP变形纯铝微观组织与力学性能研究[J].常州大学学报(自然科学版),2015,(02):30.[doi:10.3969/j.issn.2095-0411.2015.02.007]
　WEI Wei,MA Zhi-jun,WEI Kun-xia,et al.Microstructure and Mechanical Properties of Pure Aluminum Processed by T-Shaped Equal Channel Angular Pressing (T-ECAP)[J].Journal of Changzhou University(Natural Science Edition),2015,(06):30.[doi:10.3969/j.issn.2095-0411.2015.02.007]

备注/Memo

备注/Memo:
收稿日期:2016-03-29。基金项目:江苏省自然科学基金资助(BK20131144); 江苏省研究生培养创新工程项目(苏教办研[2014]1号)。作者简介:魏坤霞(1973—),女,河南巩义人,硕士,副教授,主要从事纳米金属材料、材料成形加工技术研究。
更新日期/Last Update: 2016-11-20