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Research on the Crescent-rib Bifurcation with Waistline Turning Angle of Zero Degree
Bi-fei WANG, Shao-jun XIONG, Qi-hang WANG, Yue-wei LI
PDF(2340 KB)
Research on the Crescent-rib Bifurcation with Waistline Turning Angle of Zero Degree
The three-dimensional finite element method is used to analyze the stress of crescent-rib bifurcation with waistline turning angle of zero degree and the influence of waistline turning angle on the stress of the wall and crescent-rib of bifurcation. The results indicate that waistline turning angle has little effect on the stress of the crescent-rib. The design scheme with waistline turning angle of zero degree reduces the stress in the obtuse angle area and improves the stress of the bifurcation. Keeping the wall thickness of basic cone unchanged， the ability of bifurcation to bear internal pressure can be improved by increasing the wall thickness of transition pipe. Because the waistlines of the main cone pipe and the branch cone pipe are collinear， the fabricating difficulty and error can be appropriately reduced during assembly， which can be used in engineering design.
wall of bifurcation / crescent-rib / finite element method / waistline turning angle / stress of Z direction {{custom_keyword}} /
Fig.4 Mises stress of bifurcation with waistline turning angle of 9.9°图4 腰线折角为9.9°的管壁Mises应力云图（单位：MPa） |
Fig.5 Mises stress of bifurcation with waistline turning angle of 0°图5 腰线折角为0°的管壁Mises应力云图（单位：MPa） |
Fig.7 Relationship curve of Mises stress of Point A and waistline turning angle图7 岔管管壁关键点A的Mises应力与腰线折角关系曲线 |
Fig.8 Relationship curve of Mises stress of Point B and waistline turning angle图8 岔管管壁关键点B的Mises应力与腰线折角关系曲线 |
Fig.9 Relationship curve of Mises stress of Point C and waistline turning angle图9 岔管管壁关键点C的Mises应力与腰线折角关系曲线 |
Fig.11 Stress of Z direction of crescent-rib with waistline turning angle of 0°图11 腰线折角为0°的月牙肋Z向应力云图（单位：MPa） |
Fig.12 Mises stress of crescent-rib with waistline turning angle of 0°图12 腰线折角为0°的月牙肋Mises应力云图（单位：MPa） |
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PDF(2340 KB)
Fig.1 Crescent-rib bifurcationFig.2 Size and key points of bifurcation with waistline turning angle of 0°Fig.3 Finite element model of bifurcation with waistline turning angle of 0°Fig.4 Mises stress of bifurcation with waistline turning angle of 9.9°Fig.5 Mises stress of bifurcation with waistline turning angle of 0°Fig.6 Mises stress of key points of wall of bifurcationFig.7 Relationship curve of Mises stress of Point A and waistline turning angleFig.8 Relationship curve of Mises stress of Point B and waistline turning angleFig.9 Relationship curve of Mises stress of Point C and waistline turning angleFig.10 Relationship curve of Mises stress of Point D and waistline turning angleFig.11 Stress of Z direction of crescent-rib with waistline turning angle of 0°Fig.12 Mises stress of crescent-rib with waistline turning angle of 0°Fig.13 Relationship curve of external Mises stress of crescent-rib and waistline turning angle
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