摘要
通过对Q245R钢在550℃不同应力条件下进行高温蠕变试验,并根据试验获得的数据,建立该材料的蠕变本构方程,最后将建立的蠕变本构方程用于仿真一台在役催化裂化再生器筒体的蠕变.结果表明,该材料高温单轴拉伸的材料力学性能与常温差别较大,试验得到了该材料的蠕变Norton幂律本构方程,并判断出其在550℃下的蠕变机制主要为位错攀移;有限元仿真知最大蠕变变形发生在接管与筒体相贯处筒体母线上,离相贯点约为600 mm,最大蠕变变形量为91.3 mm,与现场实测相近,说明建立的蠕变本构模型和有限元仿真是有效的,可为再生器的安全服役提供数据基础和参考价值.
High temperature creep test of Q245R steel under different stress conditions at 550℃is carried out,and the creep constitutive equation of the material is established according to the data obtained from the test.Creep constitutive equation is used to simulate the creep of a catalytic cracking regenerator cylinder in service.The results show that the mechanical properties of the material under uniaxial tension at high temperature are quite different from those at room temperature.The Norton power law constitutive equation of the material is obtained,and the creep mechanism at 550℃is mainly dislocation climbing.The finite element simulation shows that the maximum creep deformation occurs on the cylinder at the inertia between the joining tube and the cylinder,and the distance from the intersection point is about 600 mm.The maximum creep deformation is 91.3 mm,which is similar to the field measurement.It shows that the creep constitutive model and finite element simulation are effective,which can provide data basis and reference value for the safe service of the regenerator.
作者
郭金泉
刘海林
张经伟
刘康林
黄齐飞
郭帅
GUO Jinquan;LIU Hailin;ZHANG Jingwei;LIU Kanglin;HUANG Qifei;GUO Shuai(School of Mechanical Engineering and Automation,Fuzhou University,Fuzhou,Fujian 350108,China;Fujian Key Laboratory of Force Measurement(Fujian Metrology Institute),Fuzhou,Fujian 350003,China;College of Chemical Engineering,Fuzhou University,Fuzhou,Fujian 350108,China;Fujian Special Equipment Inspection and Research Institue,Fuzhou,Fujian 350028,China)
出处
《福州大学学报（自然科学版）》
CAS
北大核心
2022年第5期675-680,共6页
Journal of Fuzhou University(Natural Science Edition)
基金
国家自然科学基金资助项目(11972005)
福建省力值计量测试重点实验室(福建省计量科学研究院)开放课程基金资助(FJLZSYS2021)
天津大学-福州大学自主创新基金合作项目(TF2021-5)。
