内圧を受ける配管フランジ構造部の構造挙動と漏れ特性 : 金属平形ガスケットによる検討

概要

論文の詳細を見る
For the purpose of investigating the structural behaviors and leakage characteristics of actual JIS pipe flange with flat metal gaskets, the leak pressure measurements using the homemade leak detector were conducted under the bolting up loads and internal pressures. In addition, the numerical analyses by finite element method (FEM) were carried out by using 3-D solid and gap elements for the load conditions in experiments. The followings are found for the tested flange and flat metal gaskets: Owing to the rotation of flange, bolt axial loads at initial bolting up are decreased with increasing internal pressures, which is characteristic of this kinds of gaskets. The surface stresses on gaskets are distributed in the way of definitely increasing toward circumference. The leak pressures are increased with increase in the bolting up loads, and their levels are dependent on kinds of materials, width and thickness of gaskets. The hardness of gasket materials will be related with the leak tightness. The obtained leakage characteristics will be useful as basic data in the practical seal design of the flange joint structure.
一般社団法人日本機械学会の論文
2009-08-25