NONLINEAR VIBRATION ANALYSIS OF REED VALVES

摘要

The present paper deals with a nonlinear valve modeling and uses the assumed-modes method to simulate the dynamic behavior of reed valves. To incorporate the geometric nonlinearity due to large deflection of reed valves into the valve dynamic model, the large-deflection strain-displacement relation is considered. As example of use, a parametric analysis of an actual suction valve is presented and the discrepancy between the linear and nonlinear models is numerical compared. The simulation results show that the nonlinear strain term plays an important role on the dynamic behavior of reed valve systems if the thickness of the valve is small.