The unit pressure in backward extruding hollow billet has been calculated by the slip line method and the upperboundmethod.
本文对空心件反挤的单位挤压力,采用滑移线法和上限法进行了计算。
2
A set of equations determining the neutral Angle, rolling torque and the slip condition in asynchronous rolling are derived by upperboundmethod.
应用上界法推导了一组可确定异步轧制时的中性角、轧制力矩和打滑条件的方程。
3
The upperboundmethod of limit analysis can be used for the stability analysis of reinforced earth; the internal works on the slip plane is the crux of the stability analysis.