连铸薄板坯的二维热弹塑性蠕变应力模型  

Two-dimension Thermal Elasto-plastic and Creep Stress Model for Thin Slab Strand in Continous Casting

作　　者：陈登福[1] 刘人达[1] 颜广庭[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044

出　　处：《重庆大学学报（自然科学版）》2001年第2期81-84,共4页Journal of Chongqing University

摘　　要：薄板坯连铸是目前世界各国竞相发展的重大新技术。其技术的重要关键是保证薄板坯具有良好质量 ,铸坯的裂纹缺陷较少。针对这一目的 ,文中建立了薄板坯连铸二维热弹塑性蠕变应力(TEPC)模型。给出了高温蠕变条件下薄板坯弹性区、塑性区和过渡区的应力应变本构关系及考虑高温蠕变因素的等效塑性应变增量的表达式。给出了较准确的应力模型边界条件。TEPC模型具有较高精确性 ,可用于分析高温铸坯中的应力应变状态。The thin-slab continuous casting is an important new technology in the world. The major key of this technology is to assure the good quality and the less crack of thin slab. Thus in this paper a two-dimension thermal elasto-plastic and creep stress (TEPC) model for thin slab strand is developed. The equations between stress and strain are given on thermal creep condition for elastic area, plastic area and the transitional area of thin-slab strand section.The formula of equivalent plasto-strain increment is obtained. The boundary conditions of the model given is fairly accurate. Therefore, the TEPC model is possessed of higher precision, and the model is also used to analyze the stress and strain distribution of strand in continuous casting.

关 键 词：连铸 薄板坯 弹塑性 高温蠕变 应力模型 

分 类 号：TF777[冶金工程—钢铁冶金]