Prediction of Longitudinal Cracks Based on a Full-Scale Finite-Element Model Coupled Inverse Algorithm for a Continuously Cast Slab

被引：21

作者：

Du, Fengming ^{[1
,2
]}

Wang, Xudong ^{[1
]}

Liu, Yu ^{[3
]}

Wei, Jingjing ^{[1
]}

Yao, Man ^{[1
]}

机构：

[1] Dalian Univ Technol, Sch Mat Sci & Engn, 2 Linggong Rd, Dalian 116024, Liaoning, Peoples R China

[2] Dalian Maritime Univ, Coll Marine Engn, 1 Linghai Rd, Dalian 116026, Liaoning, Peoples R China

[3] Northeast Dianli Univ, Sch Mech Engn, 169 Changchun Rd, Jilin 132012, Liaoning, Peoples R China

来源：

STEEL RESEARCH INTERNATIONAL | 2017年 / 88卷 / 10期

基金：

中国国家自然科学基金;

关键词：

continuous casting; finite-element stress model; inverse algorithm; longitudinal crack; simulation; NONUNIFORM THERMAL-BEHAVIOR; MOLD; STRESS; SOLIDIFICATION;

D O I：

10.1002/srin.201700013

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A full-scale finite-element model of a slab and its mold is developed to predict the appearance of longitudinal cracks during continuous casting, in which the measured data are combined with the model through an inverse algorithm. The simulation results show that the stress distributions in the slab are not symmetrical, reflecting the non-uniformity of the thermo-mechanical behavior. The longitudinal crack sensitivity index is highest at 60-100 mm below the meniscus, and the position of an actual longitudinal crack agrees well with the calculated result. This illustrates the validity of the proposed method for predicting longitudinal cracks, and hence demonstrates the necessity of building the full-scale model integrated with measured data.

引用

页数：7

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