OS1407 Finite Element Stress Analysis and Sealing Performance Evaluation of Pipe Flange Connection Subjected to External Bending Moment : Effect of Scattered Bolt Preload

The contact gasket stress distributions of a non-circular flange connection with a compressed asbestos sheet gasket subjected to internal pressure were analyzed taking account a hysteresis of the gasket by using finite element method (FEM). Leakage tests were also conducted using an actual non-circular flange connection with a compressed asbestos sheet gasket under internal pressure. By using the contact gasket stress distributions and the results of the leakage tests, the new gasket constants were calculated. A difference in the new gasket constants between the values obtained from the present study and those by the PVRC procedure was substantial. In addition, a method to determine the initial clamping bolt force (bolt preload) for a given tightness parameter was demonstrated. abstract text here.

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FEM Stress Analysis and an Evaluation of the Sealing Performance in Non-Circular Flange Connections With Gaskets Subjected to Internal Pressure

Volume 2: Computer Technology ◽

10.1115/pvp2006-icpvt-11-93266 ◽

2006 ◽

Author(s):

Toshiyuki Sawa ◽

Ryo Kurosawa ◽

Wataru Maezaki

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Internal Pressure ◽

Stress Analysis ◽

Stress Distributions ◽

The Finite Element Method ◽

Flange Connection ◽

Bolt Preload ◽

Sealing Performance ◽

The Difference

The contact gasket stress distributions of a non-circular flange connection with a compressed sheet gasket subjected to internal pressure were analyzed taking into account of the hysteresis behavior of the gasket by using the finite element method (FEM). Leakage tests were also conducted using an actual non-circular flange connection with a compressed sheet gasket under internal pressure. Using the contact gasket stress distributions and the results of the leakage tests, the new gasket constants were calculated. The difference in the new gasket constants between the values obtained from the present study and those by the PVRC procedure was substantial. In addition, a method to determine the initial clamping bolt force (bolt preload) for a given tightness parameter was demonstrated.

Download Full-text

Stress Analysis and Sealing Performance Evaluation in Non-Circular Flange Connections With Gaskets Subjected to Internal Pressure

High Pressure Technology: Innovations and Advances in High Pressure Technology; 12th Annual ASME/PVPD 2004 Student Paper Competition ◽

10.1115/pvp2004-2285 ◽

2004 ◽

Author(s):

Wataru Maezaki ◽

Toshiyuki Sawa

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Performance Evaluation ◽

Internal Pressure ◽

Stress Distributions ◽

The Finite Element Method ◽

Flange Connection ◽

Bolt Preload ◽

Sealing Performance ◽

The Difference

The contact gasket stress distributions of a non-circular flange connection with a compressed asbestos sheet gasket subjected to internal pressure were analyzed taking into account of the hysteresis behaviors of the gasket by using the finite element method (FEM). Leakage tests were also conducted using an actual non-circular flange connection with a compressed asbestos sheet gasket under internal pressure. Using the contact gasket stress distributions and the results of the leakage tests, the new gasket constants were calculated. The difference in the new gasket constants between the values obtained from the present study and those by the PVRC procedure was substantial. In addition, a method to determine the initial clamping bolt force (bolt preload) for a given tightness parameter was demonstrated.

Download Full-text