|
摘要：
|
|
采用DEFORM-2D有限元分析软件对实心铆钉自冲铆接工艺过程进行数值模拟,分析了铆接成形过程中板料断裂损伤的分布以及发展趋势,实验证明:数值模拟的剖面形状与实物剖面形状一致。通过数值模拟得出的应力分布规律,优化了实心铆钉几何形状,在铆钉的头部铆钉杆采用过渡圆角,使得应力分布合理;优化压边力、间隙、凹模圆角,可以有效提高铆接质量和外观。
|
|
The process of self-pierce riveting with solid rivet was simulated by FEM software Deform-2D. The distribution and developing trends of damage were analyzed. The result shows that the cross section of simulation is in agreement with the experimental result. The filleted corner was used in the transition between the head and shank of rivet. The geometry optimization of the rivet made the distribution of the stress more reasonable. Several factors including clamp force,clearances and corner radius were optimized. The proper parameters reinforced the quality and performance of the joint.
|
|
基金项目：
|
|
江西省自然科学基金项目(2007GZC0869);;
江西省青年科学家(井冈之星)培养计划(赣财教[2007]185号);;
江西省教育厅科技项目(赣教技字2007[424]号)
|
|
作者简介：
|
|
|
|
参考文献：
|
[1]Voelkner W.Present and future developments of metal form-ing:selected examples[J].Journal of Materials Processing Technology,2000,106:236-242.
[2]Jesche F.Numerische si mulation bei m umformfgen[A].2nd European Deform User’s Meeting[C].Steinenbronn,2003.
[3]黄志超.板料连接技术进展[J].锻压技术,2006,31(4):119-122.
[4]黄志超.半空心自冲铆接工艺过程的数值模拟[J].锻压技术,2007,32(5):58-62.
[5]方刚,雷丽萍,曾攀.金属塑性成形过程延性断裂的准则及其数值模拟[J].机械工程学报,2002,38(增刊):21-25.
[6]Hatanaka N,Yamaguchi K,Takakura N.Finite element si mulation of the shearing mechanismin the blanking of sheet metal[J].Journal of Materials Processing Technology,2003,139:64-70.
[7]赵震,谢晓龙,谷胜光,等.AISI-1035钢精冲成形与断裂的数值模拟[J].模具工业,2005,(7):13-16.
[8]黄志超,姜宁,王建忠.半空心自冲铆钉挤压成形数值模拟[J].锻压技术,2008,33(6):156-160.
|
|
服务与反馈：
|
|
【文章下载】【加入收藏】
|
|
|
|
