Analytical and Numerical Model of Aluminum Alloy Swaging Ring Design to Study the Effect on the Sealing for Piping Systems

Abstract

In various fields of engineering, the assembly and repair of hydraulic installations are accomplished by joining the pipes. In such applications, the ring swaging method is used to connect the fittings to the pipes by means of a hydraulic hand tool. The basis to develop a swaging tool relies on the knowledge of the design parameter that influence plastic deformation of the swaging ring. In addition to build control over the design parameters, it is necessary to join pipes under severe conditions such as cryogenic vacuum and constrained space which require an intact sealing. In this study, the effect of swaging ring designs on sealing and strength has been examined and different swaging methods have been investigated by finite element modeling methods. Based on the obtained results, the analysis methodology of ring swaging and the characteristic impact of swaging ring design on the sealing of pipe connection are shown. The prime novelty of the study is to report the impact of swaging ring design and geometry on sealing efficiency of the pipe connection. The results of the study open new avenues for the development of efficient tools for designing swaging rings. Doi: 10.28991/cej-2021-03091641 Full Text: PDF

How Impact the Design of Aluminum Swaging Circle Fitting on the Sealing for Piping Systems: Analytical and Numerical Model

“…The swaging circle fitting principle basically relies on mechanical-elastic deformation of the fitting with the external pressure load and also subjecting the inner connection pipe to elastic-plastic deformation. B type swaging circle; radial swaging designs with pressure against axial tension and pressure booster [13].…”

“…Swaging type C; radial swaging by tightly compressing the pressure booster (wedge) fitting to the swaging circle fitting by axial pressure force [13].…”

“…In principle, as shown in Figure 4, the deformation of the tube will be greater in the middle and decrease parabolic towards both sides of the ring. Peripheral (tangential) stress caused by the pressure pulse [13].…”

“…In this study, FEM-Analysis was performed by considering 4 different geometric variations of swaged circle fitting. These have the following geometric design features shown in Figure 6: Swaging circle fitting design [13].…”

“…Different types (Types A, B, and C) designs of aluminum alloy swaged strap fastener were designed in 3D Figure 1. A type swaging circle fitting; pressure equalizer design features in the radial direction [13].…”