|
镁合金板料热拉深成形数值模拟中材料模型研究
|
|
英文标题：Research of material model during numerically simulating the hot deep drawing of magnesium alloy sheet metal |
|
作者：张庭芳 黄菊花 杨国泰 扶名福 |
|
单位：南昌大学机电工程学院 |
|
关键词：镁合金 数值模拟 极限拉深高度 流变应力模型 用户子程序 |
|
分类号：TG386.3 |
|
出版年,卷(期):页码：2008,33(4):124-128 |
|
摘要：
|
|
分别利用用户子程序二次开发方法和直接输入应力应变实验数据方法,在ABAQUS软件中获得镁合金材料模型,进行了不同温度下镁板热拉深成形极限数值模拟研究。结果表明:镁合金板料极限拉深高度在一定范围内随温度的提高而增大,本文提出的含非常软化因子的镁合金高温流变应力数学模型能较好地预测流变应力,通过二次子程序开发方法在ABAQUS软件中加入新的材料模型是切实可行的。
|
|
Method of user subroutine and importing experimental stress-strain datas directly were used to get magnesium material model in ABAQUS respectively,the numerical simulation research of magnesium alloy limit deep drawing height was carried out at different temperatures.It is found that in a certain scope,increasing temperature,the limit deep drawing height is increased,the mathematic model of magnesium alloy flow stress at high temperature which includes a variational intenerate factor bringed forward here could forecast magnesium alloy flow stress preferably.It feasible to join own material model through user subroutine in ABAQUS.
|
|
基金项目：
|
|
江西省教育厅科研项目(赣教技字2006);;
江西省科技厅科技支撑项目(2007)
|
|
作者简介：
|
|
|
|
参考文献：
|
[1]Hsiang Su-Hai,Kuo Jer-liang.An investigation on the hotextrusion process of magnesium alloy sheet[J].Journal ofMaterials Process Technology,2003,(140):6-12.
[2]Tien-chan chang,Jian-Yi Wang,China-Ming Q,et al.Grainre-fining of magnesium alloy AZ31 by rolling[J].Journal of Materials Processing Technology,2003,(140):588-591.
[3]P erez-Prado M T,del Valle J A,Ruano O A.Effect ofsheet thickness on the microstructural evolution of an MgAZ61 alloy during large strain hot rolling[J].Scripta Mate-rialia,2004,50:667-671.
[4]P erez-Prado M T,del Valle J A,Contreras J M.Micro-structural evolution during large strain hot rolling of an AM60Mg alloy[J].Scripta Materialia,2004,50:661-665.
[5]Poss R.Sheet metal production of magnesium[J].Materi-als Science Forum,2003,419-422:327-336.
[6]程永奇,陈振华,傅定发.镁合金拉深工艺的研究与进展[J].热加工工艺,2004,35(21):52-55.
[7]Gouret S,Montheillet F.A model of continuous dynamic re-crystallization[J].Acta Matex,2003,51:2685-2699.
[8]Siamak S,Ali K T.An investigation into the effect of carbonon the kinetics of dynamic restoration and flow behavior ofcarbon steel[J].Mechanics of Materials,2003,35:653-660.
[9]Estrin Y.Dislocation theory based constitutive modellingfoundation and application[J].Journal of Materials Process-ing Technology,1998,80-81:33-39.
[10]张庭芳,黄菊花,杨雪春,等.ME20M镁合金板料塑性成形性能实验研究[J].兵器材料与科学,2007,30(3):18-21.
[11]张先宏.镁合金热变形过程试验研究和数值模拟[D].上海:上海交通大学,2003.
[12]黄菊花,黎雪芬,饶进军.材料成形模拟中的参数化有限元法[J].中国机械工程,2003,14(1),145-147.
[13]张庭芳,黄菊花,邓敏,等.镁合金板热拉深实验装置及ME20M镁板热拉深性能研究[J].锻压技术,2006,31(6):40-43.
|
|
服务与反馈：
|
|
【文章下载】【加入收藏】
|
|
|
|
