板面弹性压板力对提升板料失稳临界应力的作用及其应用  

Improving buckling critical stress of sheet with the elastic pressure on the surfaces of sheet and it's application

作　　者：宋爱平[1] 王隆太[1] 李吉中[1] 王树峰[1] 

机构地区：[1]扬州大学机械工程学院,江苏扬州225009

出　　处：《中国工程科学》2009年第2期53-59,共7页Strategic Study of CAE

基　　金：江苏省高校自然科学研究计划项目(04KJB460165);扬州市-扬州大学科研合作基金项目(YZ2006054-4)

摘　　要：从分析矩形薄板的受压失稳临界应力入手,提出在冲压成形板料的上下面设置弹性压板力,从而提升板料的失稳临界应力,减少板料的受压屈曲与起皱。根据这个原理设计的新型冲压模具可有效地控制板料的起皱,同时具有"一模多用"的作用。试验也表明,具有板面多点压板功能的冲压模具,可以显著地提升板料的失稳临界应力,减少板料的起皱。A result was discovered by analyzing the stability of rectangular sheet compressed by the pressure. When the sheet metal is supported by the elastic pressing forces putting on the upper and lower surfaces of sheet in stamping, the sheet stability can be improved and the wrinkling of the sheet metal formed in forming process can be reduced. Based on the result, a novel stamping die was developed. The die can be reconfigured quickly and can suppress the wrinkling of sheet.

关 键 词：起皱 临界应力 模具 冲压工艺 

分 类 号：TG386[金属学及工艺—金属压力加工]