LOSS FACTORS OF STRUCTURAL CABLES FOR MODAL DAMPING EVALUATION

Abstract

In this research, the loss factors for axial and bending deformations are statistically identified based on the lateral vibration experiment results of various cables that have been reported. It is confirmed that the bending loss factors [0.040-0.140] are relatively large for the axial loss factors [0.010-0.022], and that the loss factor of locked coil rope is about two times larger than those of other cables. Furthermore, the accuracy of the identified loss factors was experimentally confirmed by the independent tests of both axial and bending vibrations.