|
Abstract：
|
|
To keep the fluctuate of pressure center within the range of pre-defined dimension tolerances, an algorithm based on node forces through FEA was presented, which could be adopted in non-constant thickness sheet metal forming process to calculate the pressure center dynamically. The equations were also introduced and embedded into DEFORM user routines. An FEA model for hot forming process of hydraulic blade was simulated, then calculated pressure center was revealed at any predefined time steps. This can be the pre-work of the optimizations of pressure center.
|
|
Funds：
|
|
国家自然科学基金资助项目(50675133);;
科技部973资助项目(2006CB705401)
|
|
AuthorIntro：
|
|
|
|
Reference：
|
[1]Lange K.Handbook of Metal Forming[M].New York:McGraw Hill,1985.
[2]Lin Zoneching,Deng Chinghua.Analysis of a torque equilib-rium model and the opti mal strip working sequence for a shearing-cut and bending progressive die[J].Journal of Materials Processing Technology,2001,115:302-312.
[3]曹晓卿.冲模压力中心计算的简化方法[J].太原理工大学学报,2000,31(4):467-469.
[4]程西智,郝永辉.基于模具三维造型软件的复合冲裁模压力中心的确定[J].机电信息,2005,(17):38-40.
[5]汤廷孝,贾志欣.三维CAD环境下压力中心的快速求解[J].中国机械工程,2006,(17):302-305.
[6]宋爱平,倪中华,张军,等.曲面板件三维模型表面数据的提取与平置处理[J].锻压技术,2007,32(1):113-116.
[7]钟杰,胡楚江,郭成.叶片精密锻造技术的发展现状及其展望[J].锻压技术,2008,32(1):1-5.
[8]彭颖红.金属塑性成形仿真技术[M].上海:上海交通大学出版社,1999.
[9]陈如欣,胡忠民.塑性有限元及其在金属成形中的应用[M].重庆:重庆大学出版社,1989.
[10]肖景容,姜奎华.冲压工艺学[M].北京:机械工业出版社,2000.
|
|
Service：
|
|
【This site has not yet opened Download Service】【Add
Favorite】
|
|
|
|
Copyright Forging & Stamping Technology.All rights reserved