无模多点成形中三维曲面工件的展开方法  

Development methods for the three-dimensional surface in the multi-point forming

作　　者：张冬娟[1] 苏世忠[1] 李明哲[1] 

机构地区：[1]吉林大学辊锻工艺研究所,长春130025

出　　处：《塑性工程学报》2003年第4期34-37,共4页Journal of Plasticity Engineering

基　　金：国家"十五"重点科技攻关计划资助项目 (编号 :2 0 0 1BA2 0 3B11)

摘　　要：本文从几何映射的角度出发 ,以面积不变为基本的展开原则 ,提出了适合于板材无模多点成形工艺的自由曲面展开的计算方法———三角形曲面片展开法和约束加权整体展开法 ,并用VC ++编制了相应的计算机程序。文中以鞍形样件和高速列车车头蒙皮的部分工件为例 ,进行了实际验算。In this paper, the authors have presented two calculational methods for the development of the three-dimensional surface-triangular mesh development and restrict weight development. The two methods are based on the rule of the geometrical mapping and the invariable area, applied to the multi-point forming. At last, the authors programmed the software. It has been applied to the saddle specimens the and high-speed train parts.

关 键 词：几何映射 坯料展开 自由曲面 板材 无模多点成形工艺 

分 类 号：TG382[金属学及工艺—金属压力加工]