A TESTING METHOD FOR DETERMINING THE MODULUS OF ELASTICITY OF WIREROPE THROUGH RANDOM VIBRATION

In this paper, a testing method to determine the modulus of elasticity of the wirerope based on random vibration is proposed. The wirerope and the hanging weight are simplified as a mass-spring of a single degree of freedom, the natural frequency of which is measured by the random vibration hammer testing method. Then the modulus of elasticity of the wirerope can be calculated according to the frequency. At the same time, the natural frequency can also be calculated by the longitudinal wave theory of elastomer, and the two natural frequency formulas give the same results. The suggested random vibration testing method is simple and accurate and can be used to test the modulus of elasticity of the wire rope.