Leakage Flow-Induced Vibration of an Eccentric Tube-in-Tube Slip Joint

Abstract

Eccentricity of a specific slip-joint design separating two cantilevered telescoping tubes did not create any self-excited lateral vibrations that had not been observed for a concentric slip joint. In fact, the eccentricity made instabilities less likely to occur, but only marginally. Most importantly, design rules previously established to avoid instabilities for the concentric slip joint remain valid for the eccentric slip joint.