1224 内圧及び曲げモーメントを受けるガスケット付き管フランジ締結体の FEM 応力解析と密封性能

概要

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This paper deals with the study of a pipe flange connection with an asbestos joint sheet gasket under an internal pressure and an external bending moment. Contact stress distributions at the interfaces were calculated by using the elasto plastic finite element method taking account the hysteresis and non-linearity in the stress-strain curve of the asbestos joint sheet gasket. In addition, the leakage test was conducted by using an actual pipe flange connection with the gasket under the external bending moment. New gasket constants were obtained by using the results of the leakage test and the average contact stress in the calculations. The values of the new gasket constants obtained by our study were compared with those from ROTT. As a result of the leakage test, an amount of the gas leakage was decreased, as the external bending moment was increased because the average contact stress at the interface was increased from the results of the calculations.
社団法人日本機械学会の論文
2002-03-14