Abstract
Abstract The flange joints with gasket are used in automobile, aircraft, pressure vessel and pipelines. The gasket deformation behavior controls the leakage phenomenon of the joint. The stress in spiral wound gasket with graphite filler is analyzed using micromechanical approach and axisymmetric finite element analysis. The material characteristics of individual constituents in gasket are modeled using their elasto-plastic behavior. The uniaxial compressive behavior of gasket is observed to be in good agreement with experimental values. The flange joint is analyzed for leakage by using 3D finite element model with individual constituents of gasket. A realistic distribution of contact stress in gasket is obtained using micromechanical approach. The contact stress distribution in the compression and tension side, when subjected to external bending load is also evaluated. The effective gasket width for sealing is contributed by filler tape alone, rather than combination of metal and filler tape in spiral wound gasket.
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