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基于内聚力模型预测带钢在冷轧过程中的边裂行为
昝大千,朱鑫波,陈建钧,潘红良,王正东
0
(华东理工大学机械与动力工程学院, 上海 200237)
摘要:
由于不良的剪边质量,会在带钢边部余留缺陷,在冷轧过程中,边部缺陷在轧制作用下会产生裂纹,并伴随冷轧过程的进行,裂纹逐渐扩展,进而形成断裂失效,造成断带事故,极大地影响工业生产效率和增加生产成本,因此,预测边部裂纹扩展十分重要。通过试验和仿真对比,验证了用内聚力模型(CZM)分析边部含有预置缺陷的带钢在冷轧过程中裂纹扩展行为的可行性和准确性,结合参数化分析预测边裂扩展,防止断带事故,从而指导工业生产。
关键词:  内聚力模型  冷轧  预测边裂扩展  参数化分析  有限元仿真
DOI:10.14135/j.cnki.1006-3080.2017.04.017
投稿时间:2016-12-10
基金项目:国家自然科学基金(51105143,51675182)
Predicting of Edge Crack Behavior of Steel Sheet in the Cold Rolling Process Based on Cohesive Zone Model
ZAN Da-qian,ZHU Xin-bo,CHEN Jian-jun,PAN Hong-liang,WANG Zheng-dong
(School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China)
Abstract:
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.
Key words:  cohesive zone model  cold rolling  predicting edge crack propagation  parametric analysis  finite element method simulation

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