无拉应力凹形坯料镦粗时几何参数的解析确定

Analytic Determination of the Geometric Parameter for Upsetting a Concave Plank

本文用塑性力学初等解析法求解了凹形板坯镦粗时的应力场 ,确定了无拉应力镦粗时坯料几何参数 (尺寸比、凹形形状 )

In this paper,the stress field in a concave plank being upset is resolved by analytic mathematical method of plastic mechanics,the relation between the geometric parameter (dimension ratio,concave shape)and friction shearing stress is determined for upsetting a plank free of tension stress.