NDLI: Stress Analysis and a Design Method for Bolted Pipe Flanged Joints Subjected to Internal Pressure

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Sawa, Toshiyuki Kobayashi, Takashi Tsuji, Hirokazu Nagata, Satoshi
Copyright Year	2009
Abstract	This paper deals with the stress analysis of a pipe flange connection with a spiral wound gasket using the elasto-plastic finite element method when an internal pressure is applied to the pipe flange connections with the different nominal diameters from 2″ to 20″. The effects of the nominal diameter of the pipe flange on the contact stress distributions at the interfaces and the hub stress are examined. Leakage tests of the pipe flange connections with 3″ and 20″ nominal diameters were conducted and measurement of the axial bolt force was also performed. The results by the finite element analysis are fairly consistent with the experimental results concerning the variation in the axial bolt force (Load factor). By using the contact stress distributions and the results of the leakage test, the modified gasket constants are proposed and compared with PVRC values. As a result, it is found that the variations in the contact stress distributions are substantial due to the flange rotation in the pipe flange connections with the larger nominal diameter. The hub stress has been overestimated by ASME method. In addition, a method to determine the bolt preload for a given tightness parameter and a rational design method for pipe flange connections are demonstrated.
Sponsorship	Pressure Vessels and Piping
Starting Page	157
Ending Page	167
Page Count	11
File Format	PDF
ISBN	9780791843659
DOI	10.1115/PVP2009-77587
e-ISBN	9780791838549
Volume Number	Volume 2: Computer Applications/Technology and Bolted Joints
Conference Proceedings	ASME 2009 Pressure Vessels and Piping Conference
Language	English
Publisher Date	2009-07-26
Publisher Place	Prague, Czech Republic
Access Restriction	Subscribed
Subject Keyword	Leakage Flange connections Design methodology Gaskets Stress analysis (engineering) Flanges Finite element analysis Finite element methods Pipes Pressure Rotation Stress
Content Type	Text
Resource Type	Article

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