基于变压边力控制的非轴对称拉深成形数值模拟与优化  

Optimization & Numerical Simulation of Typical Pieces with Non-axisymmetrical Shape Based on Controlling VBHF

作　　者：李奇涵[1] 李明哲[2] 毛茂[1] 

机构地区：[1]长春工业大学,长春130012 [2]吉林大学,长春130025

出　　处：《中国机械工程》2006年第S1期70-73,共4页China Mechanical Engineering

摘　　要：在给定合理毛坯形状、拉延筋与凹模渐变圆角条件下,分别在定常、递减、峰形、谷形压边力加载模式下,对汽车车灯反射镜拉深进行了数值模拟。结果表明:谷形压边力加载模式可使工件减薄率小于13.45%,适合该拉深工序;利用数值模拟结果和神经网络方法优化获得最优压边力加载曲线,该曲线可用于拉深中压边力的准确控制。Given with reasonable shape of blank,draw beads and gradual fillet of die, numerical simulation of deep drawing for automobile headlight reflector was carried out with constant-type,reduce-type, crest-type and valley-type blank holder force (BHF).The result shows that valley-type BHF is fit for this working procedure and the thinning rate of blank is less than 13.45%, moreover, the best optimum load curve of BHF was obtained by using simulation result and neural-net method.It is helpful for accurate control...

关 键 词：拉深成形 数值模拟 变压边力 神经网络 

分 类 号：TG386[金属学及工艺—金属压力加工]