Figure 2. A die which entrance part is made in the way of a catenary line

From

Modeling of Peat Mass Process Formation Based on 3D Analysis of the Screw Machine by the Code YADE

K. Epifancev, А. Nikulin, S. Kovshov, S. Mozer, I. Brigadnov

American Journal of Mechanical Engineering. 2013, 1(3), 73-75 doi:10.12691/ajme-1-3-3