充液拉深中任意空间域流体介质压力的分析  

Analysis to fluid pressure in spatial domain in hydro-mechanical deep drawing

作　　者：陈保国[1] 徐永超[1] 苑世剑[1] 

机构地区：[1]哈尔滨工业大学材料科学与工程学院,哈尔滨150001

出　　处：《哈尔滨工业大学学报》2010年第5期755-758,共4页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金资助项目(50875062)

摘　　要：采用有限元方法求解充液拉深过程中任意空间域流体介质压力分布,分析直壁间隙、法兰间隙对流体介质压力分布规律的影响,并给出了计算法兰区域最小压边力的方法,提出了充液拉深成形中间隙和最小压边力等工艺参数的选择方法,讨论在充液拉深成形过程中凹模圆角下等压处理的条件.结果表明:直壁间隙和法兰间隙共同决定流体介质压力分布,同时间隙比越大,直壁和凹模圆角部分压力分布越均匀.Fluid pressure in spatial domain was solved by means of finite element method,and the distribution of fluid pressure was analyzed for different gaps in the straight-wall and the flange in hydro-mechanical deep drawing（HDD）.Based on the distribution of fluid pressure in the flange,the minimum blank holding force was given in HDD.A method to select the gap and determine the minimum blank holding force was presented.The condition of the uniform pressure below the die corner was discussed.The results indicate that the gap ratio bet ween the straight-wall and the flange determines the distribution of fluid pressure.Larger the gap ratio will result in more homogeneous distribution of fluid pressure in the straight-wall and the die corner.

关 键 词：充液拉深 流体压力 压边力 间隙 

分 类 号：TG386[金属学及工艺—金属压力加工]