Stress and Strength Analysis of Concentric Reducers Consisting of Plates

This paper presents a new kind of piping component—a concentric reducer consisting of plates. Authors performed experimental and elastic, elastic-plastic analyses on five test models having different structural parameters. The elastic stress distribution under hydraulic test pressure, the extension of the plastic region under higher than operating loads and the results of bursting tests are also reported on. Results indicate that under test pressure the maximum stress occurs at the inside of the junction area between the small end of the reducer and the small end tube. Yield and final burst also occurs at this area under higher than operating pressure. Based on the results of the analysis, it can be concluded that the reducer is safe and reliable.