Creep Modeling of Magnesia-chromite Bricks in a RH Snorkel During a Process Cycle  

作　　者：JIN Shengli Harald HARMUTH Dietmar GRUBER Roman RSSLER 

机构地区：[1]Chair of Ceramics,Montanuniversitat Leoben,A-8700,Austria [2]Voestalpine Stahl GmbH

出　　处：《China's Refractories》2015年第1期22-25,共4页中国耐火材料（英文版）

基　　金：supported by the Austrian competence centre programme COMET ( Competence Center for Excellent Technologies) with funds from the Federal Ministry for Transport,Innovation and Technology,the Federal Ministry of Economy,the provinces of Upper Austria and Styria,the Styrian Business Promotion Agency,and the Tyrolian Future Foundation

摘　　要：In this paper both experimental and analytical approaches to provide the inputs for creep modeling of refractories including a newly developed high temperature compressive creep machine and an inverse estimation procedure of creep law parameters are briefly introduced.Besides,a modified shear test is applied to determine the cohesion and friction angle of refractories under shear state. A RH snorkel equipped with magnesia- chromite bricks is chosen for a case study of thermomechanical simulation applying the classical creep model and Drucker-Prager creep model available in the finite element code ABAQUS,respectively. Afterwards,thermal stresses and joint opening of magnesia- chromite bricks during a process cycle are compared to distinguish the impact of these two creep models.In this paper both experimental and analytical approaches to provide the inputs for creep modeling of refractories including a newly developed high temperature compressive creep machine and an inverse estimation procedure of creep law parameters are briefly introduced.Besides,a modified shear test is applied to determine the cohesion and friction angle of refractories under shear state. A RH snorkel equipped with magnesia- chromite bricks is chosen for a case study of thermomechanical simulation applying the classical creep model and Drucker-Prager creep model available in the finite element code ABAQUS,respectively. Afterwards,thermal stresses and joint opening of magnesia- chromite bricks during a process cycle are compared to distinguish the impact of these two creep models.

关 键 词：creep shear failure thermomechanical modeling RH snorkel 

分 类 号：TQ175.1[化学工程—硅酸盐工业]