Predicting of Edge Crack Behavior of Steel Sheet in the Cold Rolling Process Based on Cohesive Zone Model

Because of the poor quality edge cutting operation,the defects are created in the steel sheet edge.In the cold rolling process,the edge defects under the effect of rolling can generate cracks,which gradually propagate to create fracture failure finally.It can make the strip rupture accident.Thus,the industrial production efficiency is affected seriously and the cost of production increases.Therefore,it is important to predict the propagation of the edge crack.In this research,by comparison of experiment and simulation,the cohesive zone model (CZM) is used to analyze the accuracy and feasibility of the crack propagation behavior of the steel sheet with preset notch in the edge during the cold rolling process.The parametric analysis is employed to predict the edge crack propagation in order to avoid strip rupture accident and guide industrial production.