冷轧板带出口板凸度的显式动力学有限元模拟  

Simulation of the Cold Rolling Strip Crown on the Platform Software LS-DYNA

作　　者：刘杰锋[1] 张小平[1] 赵春江[1] 王琛[1] 

机构地区：[1]太原科技大学重型机械教育部研究工程中心,山西太原030024

出　　处：《机械设计与制造》2015年第5期203-206,共4页Machinery Design & Manufacture

基　　金：国家自然基金项目(51404159);山西省基础研究项目(2013021019-1);山西省高校青年学术带头人计划资助(TYAL)

摘　　要：板凸度是板形的主要精度指标,传统计算板凸度的方法主要包括解析法和影响函数法。影响函数法较解析法计算精度高,但计算程序复杂,需要大量迭代计算。采用显式动力学方法对薄板的冷轧过程进行了弹塑性有限元模拟,并在后处理中提取了厚度位移数据,计算了不同宽度薄板的出口板凸度。其次,用新日铁板凸度预测模型计算了相同规格板带的出口凸度,并对相同规格的板带做了轧制实验。最后,比较了模拟、理论、实验三种方法得出的凸度值,验证了模拟结果的准确性。The strip crown is the main accuracy indexes for shape. Generally speaking,the traditional calculation method includs analytical method and influence function method. Although influence function method has higher accuracy than analytical method,whose calculation procedure is complex,and moreover,this method including a mass of iterative computations. It simulates the process of rolling sheet steel by elastic-plastic finite element method. In addition,the crown about different width of the sheet is calculated by the thickness of the displacement data collected in the post-processing.Then,the crowns are calculated by Nippon steel model,and the crowns are measured by the experiment of rolling. Finally,the crowns from simulation,theory and experiment are compared,and simulated result proves to be accurate.

关 键 词：板凸度 显式动力学 弹塑性有限元 新日铁模型 

分 类 号：TH16[机械工程—机械制造及自动化]