LIFE PREDICTION OF A MAIN STEAM PIPELINE AT ELEVATED TEMPERATURE BASED ON CREEP DAMAGE MECHANICS

摘要：

In this paper, the modified Karchanov-Rabotnov creep damage constitutive equation has been incorporated into finite element program ABAQUS through its user subroutine to predict the creep damage and remaining life of a serviced steam pipeline made of STAP23 heat resistance steel. Creep tests and short-term tensile tests were carried out to get the material constants in creep damage constitutive equation, which are necessary in the mentioned creep damage and life prediction. The damage distribution of the pipeline serviced for 100,000 hrs was obtained. Based on this, remaining life of the pipeline was analyzed, and the conclusion is consistent with the actual serviced life and metallographic examination results.

作者: Luyang Geng Jianming Gong Xiaochi Niu Juntao Bao

作者单位: School of Mechanical and Power Engineering, Nanjing University of Technology, Nanjing 210009,China

会议类型: 国际会议

会议名称: 第九届工程结构完整性国际会议(The Ninth International Conference on Engineering Structural Integrity Assessment)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-10-15（万方平台首次上网日期，不代表论文的发表时间）