摘要
采用流函数速度场对圆棒、线材的挤压、拉拔问题进行了上界法解析和实验比较,结果是令人满意的。直线模的解析曲线公式为确定力能参数、变形行为和加工界限提供了重要的理论依据。这给挤压、拉拔的工艺选择和模具的优化设计提供了重要参数。
Upper Bound Analysis was applied to the extrusion/drawing process of rodsor wires by introducing a fluxional function in speed field, with a satisfacto-ry result obtained in comparison to experimental data.An analytic curve/equ-ation of linear die was given for such determination as of force/energy para-meters, deformation behaviors and forming limits,thus providing theoreticallythe important parameters for the choice of technological process of extrusion/drawing and the optimization of die design.
关键词
流函数
上界法
模半角
挤压
拉拔
fluxional function
upper bound analysis
die approach
shape function of die
