摘要
使用ANSYS软件计算同一筒径,不同开孔直径壳体,共六个模型的应力集中系数.按等面积补强法计算出以上模型分别采用补强圈补强和厚壁接管补强各自的厚度,建立相应的模型,求出应力集中系数.有限元的分析方法可以证明:在局部区域内产生较大的塑性变形时采用补强圈或厚壁接管补强,均可有效的改善孔边的应力集中,相同壳体直径,开相同大小的孔时,接管补强后的应力集中系数小于补强圈补强的应力集中系数.
Stress concentration factors of six vessels with a same cylinder diameter and different nozzle diameters are calculated by use of ANSYS software. Equal area reinforcement method is applied and the thickness of compensative rings and compensative pipes for the vessels is calculated. Finite element models are constructed and the stress concentration factors are worked out. Finite element analysis proves that both compensative rings and compensative pipes can well reduce stress concentration around the nozzle. The stress concentration factor of a vessel reinforced with a compensative pipe is smaller than that of the other vessel reinforced with a compensative ring provided that the cylinder diameter of the two vessels is of the same size ,as is their nozzle diameter.
出处
《内蒙古工业大学学报（自然科学版）》
2007年第4期308-311,共4页
Journal of Inner Mongolia University of Technology：Natural Science Edition
基金
内蒙古工业大学重点研究项目(Z1200515)
关键词
圆柱壳
开孔接管区
应力集中系数
有限元
cylinder vessel
vessel-nozzle junction
stress concentration factor
finite element
