Accession Number : AD0843870

Title :   The Possibility of Improving Characteristics of a Dynamic Vibration Absorber in the Presence of a Rotating Centrifugal Force,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH

Personal Author(s) : Ziemba, S. ; Radziszewski, B.

Report Date : 13 NOV 1967

Pagination or Media Count : 16

Abstract : The authors investigate the mechanics of a dynamic vibration absorber. The system, which has two degrees of freedom, consists of mass m1, which is secured to the base by a linear spring, and mass m2, which is connected by a spring whose nonlinear form is expressed by F(x) = ax + b(x cubed). Vibrations in the system are produced by a sinusoidal force, with an amplitude which is a function of the second degree frequency of the exciting force (a case often encountered in practice) which acts on mass m1. An analysis is given of existing linear solutions. Equations for the above system are solved by the method of harmonic linearization. Conditions are found for a, b connecting the springs, which provide a wide margin for the exciting frequency within which the amplitude of vibrations of mass m1 will be small. A nonlinear vibration absorber is shown to be more effective than a linear absorber in the case of centrifugal force.

Descriptors :   (*SHOCK ABSORBERS, VIBRATION), DAMPING, NONLINEAR SYSTEMS, SPRINGS, FREQUENCY, POLAND.

Subject Categories : Machinery and Tools

Distribution Statement : APPROVED FOR PUBLIC RELEASE