摘要
通过建立高强钢钢板弯曲的静态隐式仿真模型,对凹模圆角区摩擦功数值进行分析,获得关键参数与摩擦功的对应关系,研究结果表明:在凹模待成形材料流入处位置的摩擦功最大,随着凹模圆角角度增加,摩擦功呈减小趋势,在凹模圆角中部附近,摩擦功出现了较小峰值,随后在凹模圆角出口之前降为零,随着凹模相对圆角半径减小、冲压速度增加、材料强度增加,摩擦功会增大,压边力对摩擦功没有影响。
A static implicit simulation model of bending high strength steel was established,and the numerical analysis of friction work at the concave die fillet was carried out.The relationship of key parameters and the friction work was studied.The investigation showed that at the beginning of the concave die corner,the friction work was the biggest,and then decreased along the corner.At the middle of the corner,the friction work increased to a peak value,then reduced to zero.With the decreasing of relative concave die radius,the increasing of stamping speed and the strength of material,the friction work was increased,while blank-holder force had a very tiny influence on the friction work.
作者
张波
徐志丹
黄红端
罗爱辉
ZHANG Bo;XU Zhi-dan;HUANG Hong-duan;LUO Ai-hui(SAIC-GM Wuling Automobile Co.,Ltd.,Liuzhou,Guangxi 545007,China;Baoshan Iron & Steel Co.,Ltd.,Shanghai 201900,China;State Key Laboratory of Development and Application Technology of Automotive Steels (BaoSteel),Shanghai 201900,China)
出处
《模具工业》
2019年第8期6-9,共4页
Die & Mould Industry
关键词
高强钢
摩擦功
磨损
冲压
数值仿真
high strength steel
friction work
wear
stamping
numerical simulation
