锻压变形力的一种数值分析模型  

A numerical analysis model of forging force

作　　者：刘德学[1] 王凯峰[2] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,兰州730050 [2]上海宝钢集团公司,上海200122

出　　处：《哈尔滨工业大学学报》2009年第9期207-209,共3页Journal of Harbin Institute of Technology

基　　金：国家重大基础研究前期研究专项(2003CCA03800)

摘　　要：为了确定开式模锻中力学参数与模具型腔几何参数之间的关系,采用精确作图法得到了锻靠阶段初期的临界滑移线场模型,并用数值分析方法确定该模型中变形几何参数与滑移线场参数的相互关系,根据滑移线场相关理论进行力学分析,确定这一特定时段的应力场以及变形力分布.该临界数值分析模型的建立为确定锻靠阶段变形区的形状与尺寸,进而求解应力场、变形力分布提供了量化的理论基础,并为运用此方法建立模锻过程其他特征时段的力学模型提供了依据.To establish the relationship between mechanical parameters and cavity geometric parameters of the forging die, a critical slip-line field model about final die forging was established through graphing method. Then the relationship between geometric parameters of forging die and slip-line field parameters of deformable body was determined by numerical method. Based on the above relationship and the mechanical analysis with slip-line field theory, stress field and distribution of deforming force about the specific time interval were obtained. The critical numerical analysis model supplies a quantified theoretical foundation for solving the stress field and distribution of deforming force based on the shape and size of deformed area. And this critical model supplies a rule for model establishment of other characteristic time intervals of the whole forging process.

关 键 词：滑移线场 数值分析 曲线拟合 应力场 变形力 

分 类 号：TG302[金属学及工艺—金属压力加工] O165.6[理学—数学]