熱間圧延用ワークロールの表面き裂の伝ぱ解析

抄録

The stress intensity factors for surface cracks of work roll in hot strip mills are analyzed by means of the body force method. In the numerical analysis the contact between the crack surfaces is taken into account. The results of analysis show that the crack propagates mainly by means of the shear mode. The stress intensity factors for the shear mode are greatly affected by the friction coefficient between crack surfaces.