Stress Intensity Factor Calculation of Ultrahigh Pressure Elbow with Semi-elliptical Cracks
Ultrahigh pressure elbow is a key part of ultrahigh pressure pipeline, because of the processing modeling complexity of ultrahigh pressure elbow, there are some cracks on the surface of inside wall of ultrahigh pressure elbow, so under the effect of intemal pressure, the stress field was very complex, Finite element analysis software was used to analyzed ultrahigh pressure elbow with semi elliptical cracks, the stress distribution near the cracks was gained, and mainly studied the stress intensity factor of ultrahigh pressure elbow with semi- elliptical cracks and analyzed the effect factor, the result showed that the major effect factors on the stress intensity factors of ultrahigh pressure elbow are inside diameter and outside diameter ratio, the dimension of crack crack angle, and the depth of crack and thickness ratio, and effect on the stress intensity factors of RofRi was maximal, in engineering should be emphatically to consider the impact.
stress intensity factor crack ultrahigh pressure elbow
DENG Xisheng WANG Zuowen
School of Civil Engineering and Architecture,Southwest Petroleum University,Chengdu,Sichuan,P.R.China,610500
国际会议
成都
英文
318-322
2011-05-13（万方平台首次上网日期，不代表论文的发表时间）