实体单元在变薄拉深成形模拟及工艺参数优化中的应用  

Application of Solid Element in Ironing Simulation and Optimization of Processing Parameters

作　　者：许江平[1] 柳玉起[1] 杜亭[1] 章志兵[1] 

机构地区：[1]华中科技大学材料成形与模具技术国家重点实验室,武汉430074

出　　处：《中国机械工程》2009年第6期737-740,共4页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(50575080);国家科技支撑计划资助项目(2006BAF01A43)

摘　　要：采用黏性阻尼沙漏控制算法,开发了单点积分的八节点六面体单元的有限元动力显式算法程序,用于模拟厚钣金件的变薄拉深成形过程。详细讨论了变薄系数R、模具与坯料间的摩擦因数μ,以及凹模锥角α对最大成形力的影响。模拟结果表明:通过对工艺参数R、α和μ的优化,选取适当的工艺参数值,可以获得较小的最大成形力,从而有效地减少模具磨损,延长模具寿命。Based on viscosity damping hourglass control method, a one- point integranonal hexahedral finite element dynamic explicit algorithm was developed and ironing process simulation was also carried out. The thinning coefficient R, friction coefficient μ between molds and blank, cone angle of female die α, which affected the maximum forming force, were discussed in details. Simulation results show that the improvement and choice of the process parameters R,α and μ can obtain smaller maximum load force, thus effectively decrease molds wear and lengthen molds life.

关 键 词：单点积分 沙漏控制 变薄系数 摩擦系数 凹模锥角 

分 类 号：TG386[金属学及工艺—金属压力加工]