乙烯裂解炉管中时变应力场和蠕变损伤分数数值模拟  

Numerical simulation on stress and creep damage fraction in ethylene cracking tube

作　　者：祝美丽[1] 尹友[1] 汪涛[1] 刘书田[2] 张俊善[1] 

机构地区：[1]大连理工大学材料工程系,辽宁大连116024 [2]大连理工大学工程力学系,辽宁大连116024

出　　处：《大连理工大学学报》2001年第2期192-196,共5页Journal of Dalian University of Technology

基　　金：国家自然科学基金!资助项目 ( 5 0 0 710 16)

摘　　要：通过对乙烯裂解炉管典型工况分析 ,建立了炉管在温度、内压、渗碳和蠕变等交互作用下的有限元计算模型 ,并对 HK4 0奥氏体耐热钢制成的乙烯裂解炉管在 1 1 73 K下的应力场和蠕变损伤分数进行了模拟 ;结果表明渗碳是引起炉管失效的主要原因 .通过计算得到的炉管失效方式。After analyzing the typical operation conditions of ethylene cracking tubes, a finite element calculation model under interactions of temperature, internal pressure, carburization and creep is founded. Stress distribution and creep damage distribution are simulated for cracking tubes made from HK40 steel at 1173 K. The calculated results show that carburization is the main cause of the failure of tubes. As for the way and location of the failure of tubes and the life of tubes, the calculated results are in good agreement with the actual results.

关 键 词：应力场 乙烯裂解炉管 蠕变损伤分数 炉管寿命 乙烯生产 石油化工工业 奥氏体钢 数值模拟 

分 类 号：TE963.03[石油与天然气工程—石油机械设备] TG111.8[金属学及工艺—物理冶金]