钢包复合结构体的钢包底内衬膨胀缝对钢包应力的影响研究  

Research on influence of expansion joint of bottom lining in ladle composite construction body on thermal stress

作　　者：李公法[1] 蒋国璋[1] 孔建益[1] 陈世杰[1] 何婷婷[1] 

机构地区：[1]武汉科技大学机械自动化学院,武汉430081

出　　处：《机械设计与制造》2010年第1期113-114,共2页Machinery Design & Manufacture

基　　金：湖北省武汉市科学技术局科技攻关项目(20061002052);湖北省自然科学基金(2002AB070);教育部科学技术研究项目(03088)

摘　　要：膨胀缝对钢包复合结构体的热应力具有重要影响,热膨胀应力是其损坏的重要原因之一,所以热膨胀应力计算具有很大的实用价值。内衬之间的膨胀缝问题可以归结为一类接触问题,建立了其物理模型。基于有限单元法,建立了钢包复合结构体中包底内衬膨胀缝的有限元模型,研究了各层膨胀缝的接触应力。研究结果表明:设置2mm膨胀缝可以降低的接触应力为内衬耐压强度的1/6～1/5。Expansion joint has important influence on thermal stress of ladle composite construction body,the thermal expansion stress is one of its important reasons that lead to damage,so it＇s very great practical value to calculate the thermal expansion stress. Expansion joint question between the inside lin- ings can be summed up in a kind of contact question,its physical model is set up. The finite element model of expansion joint of bottom lining in ladle composite construction body is built, the contact stress of expansion joint in every layer are studied. The results show that setting 2 millimeters expansion seam can reduce the contact stress which takes up from 1/6 to 1/5 of lining resistance pressure intensity.

关 键 词：钢包复合结构体 包底内衬 膨胀缝 有限元法 热应力 

分 类 号：TH16[机械工程—机械制造及自动化] TE769.2[石油与天然气工程]