|
摘要：
|
|
使用数值模拟技术对旋压加工过程进行模拟能为生产提供合理的工艺参数、提高产品质量、减少试加工过程的消耗。基于弹塑性有限元理论,综合考虑旋压过程中金属3个方向的流动以及摩擦等实际情况,建立了筒形件旋压加工的三维弹塑性有限元力学模型,研究了各种工艺参数(包括旋轮圆角半径、旋轮直径、进给速度、每道次减薄率、成形角以及退出角等)对成形结果和回弹的影响规律。模拟结果显示,旋轮圆角半径、进给速度、减薄率等参数对成形结果和回弹量有较大影响。
|
|
By applying FEM numerical simulation technology to spinning process,the reasonable craft parameters can be achieved,the quality of the spinning products can be improved and the expense on trials can be reduced.Based on the elastic-plastic finite element theory,the metal flow in three directions(tangential,radial and axial) and the friction effect were considered generally,and a 3D elastic-plastic finite element model was constructed for the tube spinning process.With the model,the effect of various craft parameters(including the fillet radius of the roller,the diameter of the roller,the feed velocity,the decrement of the thickness per procedure,the modeling angle and exit angle) on the forming results and spring-back were studied respectively.The results show that the fillet radius of the roller,the feed velocity and the decrement of the thickness have a significant effect on the forming results and spring-back.
|
|
基金项目：
|
|
|
|
作者简介：
|
|
|
|
参考文献：
|
[1]林新波,翟福宝,张质良,等.筒形件错距旋压缺陷的有限元仿真研究[J].锻压技术,2002,27(4):40-43.
[2]卫原平,王轶为.工艺参数对筒形件强力旋压过程的影响[J].模具技术,2000,(4):12-16.
[3]赵敬涛,张庆.厚壁封头温旋成形的数值模拟[J].机械工人,2002,15(8):66-69.
[4]李玉强,杨合,崔振山,等.工艺参数对多道次拉旋应力应变分布的影响规律[J].塑性工程学报,2004,10(5):17-20.
[5]许沂,李萍.筒形件反旋旋压力模拟分析[J].热加工工艺,1999,9(3):26-27.
[6]赵宪明,吴迪,吕炎,等.筒形件正旋旋压力及位移分布规律的有限元分析[J].塑性工程学报,2002,9(12):56-59.
[7]许沂,单德彬,张士宏,等.筒形件强力旋压三维刚塑性有限元模拟中几个关键问题的研究[J].塑性工程学报,1999,6(4):49-53.
[8]Priit Podra,Soren Andersson.Finite element analysis wearsi mulation of a conical spinning contact considering surface to-pography[J].Wear,1999,224:13-21.
[9]李启军,吕宏军,王琪.高深径比TC4钛合金筒形件普旋成形有限元数值模拟[J].宇航材料工艺,2006,(增刊Ⅰ):88-92.
[10]吕昕宇,侯红亮,张士宏,等.TC4合金流动旋压三维弹塑性有限元模拟[J].锻压技术,2005,30(6):38-41.
[11]薛克敏,川井谦一,李萍,等.筒形件强旋工艺参数对金属切向流动的影响[J].哈尔滨工业大学学报,2000,32(10):86-88.
[12]麻桂艳,付文智,李明哲.中厚板多点成形中回弹的数值模拟[J].锻压技术,2006,30(4):141-144.
[13]张晓静,周贤宾.板料成形回弹模拟[J].塑性工程学报,1999,9(3):56-62.
[14]刘艳芳,施法中.板料冲压成形回弹的有限元数值模拟研究[J].锻压技术,2004,28(4):36-39.
[15]吕炎,刘英伟,单德彬,等.筒形件强旋三维刚塑性有限元分析[J].中国有色金属学报,1999,9(3):118-122.
|
|
服务与反馈：
|
|
【文章下载】【加入收藏】
|
|
|
|
