Abstract: A new method, in which one array of extreme thin element is attached before the entry of roll gap, is presented to deal with singular point during simulation of common rolling by rigid-plastic FEM, and an explanation is given in theory. It leads simplification of the program and improvement of the calculation precision compared with that in previous works for cold rolling of AI and low-carbon steel.

Key words: Extreme thin element, Rigid-plastic FEM, Singular point