Analysis of Leakage in Bolted-Flanged Joints Using Contact Finite Element Analysis

Abstract

Abstract:The evolution of leakage is studied using detailed contact finite element analysis. The distribution of stress at the gasket is analyzed using a contact condition based on slide-line elements using ABAQUS, a commercial finite element code. Slide-line elements also take into account pressure penetration as contact that is lost between flange and gasket. Results are presented for a particular flange, a raised face flange sealed by a mild steel gasket. A comparison of the results from the gasket contact analysis and the contact conditions specified by the ASME Boiler and Pressure Vessel Code, Sections VIII, Division 1 shows that the conditions specified in the ASME Code predict leakage relatively accurately.

Analysis of a HDPE flanged connection with a time and temperature dependent constitutive behavior

“…Many studies have assessed the leakage performance in steel flanges. Estarda [9] studied the leakage in bolted joints with an axisymmetric FEA model to investigate the evolution of contact stress in a steel flange with a gasket. The FEA results were compared with analytical calculations, which predicted pressure penetration distance values in agreement with the FEA results.…”

A new solution of the semi-metallic gasket increasing tightness level

“…This e ect causes a higher density of the elastic material which results in a higher tightness of the joint. On the other hand, the metal core is characterized by a slight elastic recovery as well as excessive sti ness, which leads to a large variation of the contact pressure along the gasket's width [3]. In this work a new design of the campro le gasket was presented and analyzed.…”