Flow Analysis of A Pumping Tube for The Development of A Self-Inflating Tire Using Fluid-Structure Interaction Analyses

In this study, flow analyses were conducted inside pumping tube based on fluid-structure interaction analyses. First, a Computer Aided Engineering (CAE) model was constructed for fluid-structure interaction analyses. The interaction analyses of the three types of pumping tubes proposed herein were conducted under the same conditions, and their efficiencies were compared. Eccentricity analyses were carried out to determine the degree of eccentricity that can be tolerated in the process by selecting the most efficient tube. Subsequently, tests were conducted using negative pressure measurement equipment and simulation modeling was compared and verified under the same conditions. In order to verify the performance of the self-inflating tire developed on this basis, durability and air pressure restoration tests were carried out.