Accession Number : ADP004909

Title :   Dynamic Instability of the Flexible Coupler of a Four-Bar Mechanism,

Corporate Author : RENSSELAER POLYTECHNIC INST TROY NY DEPT OF CIVIL ENGINEERING

Personal Author(s) : Tadjbakhsh,I. G.

Report Date : FEB 1985

Pagination or Media Count : 12

Abstract : Dynamic behavior of flexible components of mechanisms is prone to instabilities which create resonant speed barriers. By considering small deformations superimposed on the steady dynamic state equations governing evolution of disturbances can be obtained. For the case of mechanisms driven by periodic inputs these equations reduce to a system of coupled Mathieu-Hill equations for the amplitudes of modes of vibrations. Application of the Floquet theory determines the critical conditions of speed, geometry and material properties causing dynamic instability. (Author)

Descriptors :   *COMPUTATIONS, *COUPLERS, *DYNAMICS, EQUATIONS OF STATE, DEFORMATION

Distribution Statement : APPROVED FOR PUBLIC RELEASE