A Study on Vibration Transmission Characteristics of Kinematic Coupling by Using Finite Element Analysis

Abstract

Kinematic coupling is attracting attention as one of the technologies to achieve development of a large highly precise space structured system in the space engineering field in recent years. The location difference between upper and lower parts of kinematic coupling can cause position error. So elucidation of a mechanical mechanism is required about the influence by which this difference gives it to the whole structure. In this research, we investigate vibration transfer characteristics of the kinematic coupling by using the finite element analysis. We construct a precise finite element analysis model which can consider the frictional contact effects at joints. The kinematic coupling constructed is the twodimensional model in which 1DOR and 2DOR are included. Vibration is given to the base plate when the coupling has been completed, and the transfer characteristics are evaluated at 3 points, the center of lower side, 1DOR contact point, and the center of upper side. In the analysis, we investigate the effects of the friction and the pressing load on the transfer characteristics.