Transactions of Materials and Heat Treatment

Title：Plastic hinge feature in rotary forging and upsetting process of ring billet

Authors： ZHANG Fu-fang WANG Hua-jun WANG Xiao-kai HUANG Qiang ZENG Jie PENG Yi(School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China)

Unit： Wuhan University of Technology

KeyWords： ring rotary forging upsetting plastic hinge ratio of height to diameter FEM

ClassificationCode：TG316.11

year,vol(issue):pagenumber：2010,35(2):141-143

Abstract：

The plastic hinge is the key factor that can effect the stability of the ring rotary forging process and it is essential to study the feature of the plastic hinge.Based on the ABAQUS simulation software,the FE model of ring rotary forging process was established and the stress distribution in the zone of the ring plastic hinge was investigated.The influence mode of ring ratio of height to diameter to the stress distribution in the ring plastic hinge zone was analysed.So the influencing factors and the variation patterns of the establishment and development of the plastic hinge were obtained during ring rotary forging process.That is as high-diameter ratio of ring increases,the location of the plastic hinge shifted along the direction of the rocker's rotation.The above results will promote the stability and development of the ring rotary forging process.

Funds：

湖北省自然科学基金(2007ABA214);; 国家科技支撑计划(2006BAF04B06);; 材料成形与模具技术国家重点实验室开放基金(06-5)

Reference：

[1]张文元,张耀春.高层钢结构双重非线性分析的塑性铰法[J].哈尔滨建筑大学学报,2000,33(6):1-7. [2]Johnson,Wineedham G.Plastic hinges in ring indentation inrelation to ring rolling[J].Int.J.Mech.Sci.,1968,10(2):487-490. [3]张猛,胡亚民.摆辗技术[M].北京:机械工业出版社,1998. [4]张猛.环件摆动辗压力计算[J].热加工工艺,1988,17(3):15-21. [5]张猛.计算摆辗压力、扭矩及功率的诺莫图[J].锻压机械,1985,(2):20-21. [6]王广春,赵国群,吕炎.环形件摆动辗压变形机理三维刚塑性有限元分析[J].塑性工程学报,1999,6(4):80-85. [7]程培元,胡锐,卢志国.直齿圆锥齿轮摆辗成形最大辗压力的有限元研究[J].锻压技术,2008,33(1):50-52. [8]Jiang Z Y,Tieu A K.A 3-D finite element method analysisof cold rolling of thin strip with friction variation[J].Tri-bology International,2004,37(2):185-191.

Service：

【This site has not yet opened Download Service】【Add Favorite】