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RESEARCH PAPERS

A Stress Analysis of a Taper Hub Flange With a Bolted Flat Cover

[+] Author and Article Information
T. Sawa

Department of Mechanical Engineering, Yamanashi University, 4-3-11 Takeda, Kofu, Yamanashi Japan

N. Higurashi

Ishikawajima Harima Heavy Industry Co. Ltd, Tokyo, 100 Japan

T. Hirose

Kobe Steel Co. Ltd., Tokyo, 100 Japan

J. Pressure Vessel Technol 119(3), 293-300 (Aug 01, 1997) (8 pages) doi:10.1115/1.2842307 History: Received September 09, 1991; Revised January 31, 1997; Online February 11, 2008

Abstract

A bolted connection consisting of a cover on a pressure vessel flange with a metallic flat gasket on raised faces is analyzed as a four-body contact problem using axisymmetrical theory of elasticity. The contact stress distribution, the load factor (the relationship between an increment of bolt axial force and an internal pressure), and the gasket properties (the gasket seating width and the moment arm) are examined. In the analysis, the cover is replaced with a finite solid cylinder. The metallic flat gasket, the flange, and the hub are replaced with finite solid cylinders. The effects of the stiffness and the thickness of various size gaskets on the contact stress distribution are obtained by numerical calculations. Experiments were carried out to obtain the load factor, the maximum stress produced in bolts, and the stress produced on the hub. The analytical results obtained are shown to be consistent with the experimental results.

Copyright © 1997 by The American Society of Mechanical Engineers
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