Simulation of Horizontal 2-stands Rolling by Plasticine

Abstract

Simulation of horizontal 2-stands rolling by plasticine, for compressive rolling and tensile rolling, is carried out. The following items are clarified:
(i) Deformation of side face, upper face and transverse section of workpiece and distribution of principal strain-rate and slipping velocity against rolls.
(ii) Forces and torques acting on rolls and rolling energy.
(iii) Distribution of pressure, circumferential frictional stress and axial frictional stress acting on the surfaces of rolls.
(iv) Distribution of internal stress in workpiece.
Then the above experimental results are analysed, and the following facts become clear:
(i) All the stress measurements are made with enough accuracy.
(ii) Distribution of principal strain-rate and others coincide well with the measured stress distributions.
(iii) Compressive rolling is effective to eliminate the tensile stress in the neighborhood of the surface of workpiece. Thensile rolling slightly reduces rolling energy.