AXIAL VIBRATION ANALYSIS OF LONG UMBILICAL CABLE WITH A PILOT MINING ROBOT

Abstract

In this study, axial vibration analysis is carried out to estimate natural frequencies and tensions of the umbilical cable using experimental data obtained the first pre-pilot mining test. The axial vibrations of the umbilical cable with a pilot mining robot at the bottom end are analytically solved. Ranges of added mass coefficients of pilot mining robot are estimated through comparing experimental data with analytical data. Natural frequencies and maximum tensions are calculated using estimated four added mass coefficients. Fig. 1 shows the maximum tensions at cable upper end.pilot mining robot at the bottom end are analytically solved. Ranges of added mass coefficients of pilot mining robot are estimated through comparing experimental data with analytical data. Natural frequencies and maximum tensions are calculated using estimated four added mass coefficients. Fig. 1 shows the maximum tensions at cable upper end.