筒形件颗粒或可压缩粉末软凹模拉深工艺的力学分析  

Mechanics Analysis of Granules or Powder Flexible Cavity Deep Drawing Technology for Cup Shell

作　　者：骆俊廷[1] 黄倩影[1] 顾勇飞[1] 张春祥[1] 陈燕楠[1] 

机构地区：[1]燕山大学亚稳材料制备技术与科学国家重点实验室,秦皇岛066004

出　　处：《中国机械工程》2011年第14期1745-1747,1753,共4页China Mechanical Engineering

摘　　要：提出了一种颗粒或可压缩粉末软凹模成形工艺。基于一定的基本假设,对筒形件颗粒或可压缩粉末软凹模的成形工艺进行了力学分析。将该工艺与刚性模具成形工艺进行了对比,分析了筒形件成形过程中各变形区域的应力应变状态及数值大小,推导出变形时与颗粒或可压缩粉末接触区域的应力和应变的计算公式。研究结果证明,颗粒或可压缩粉末软凹模成形工艺有利于防止成形零件缺陷的产生,可提高板材的成形极限。A new granules or powder soft cavity forming（GFCF） technology was presented herein and the mechanics analysis was finished.The stress and strain state of forming parts were analyzed and the values were calculated compared with common rigid die forming based on the fundamental assumption.The theoretic equations were obtained for calculating the values of stress and strain.The research results prove that the forming limit can be improved and defects can be prevented when parts are formed by granules or powder flexible cavity forming technology.

关 键 词：颗粒或可压缩粉末 软凹模 力学分析 应力应变 

分 类 号：TG376.3[金属学及工艺—金属压力加工]