Digital simulation of a rotating shaft with a transverse crack (Q1900574)

This article presents the structure of a digital computer program that has been developed to solve the equations of motion of the cracked shaft in order to determine the dynamic response during start-up of a turbo- generator. Investigations are performed using the advanced continuous simulation package ACSL via a Runge-Kutta algorithm. Results of the simulation reveal that ultraharmonic resonances of the system occur at one-half and one-third subcritical speeds, which can be used as a criterion for crack growth detection.