Evaluation Of Damping Properties Of
Composite Mount Using A Five-element Model
With Variable Parameters
Author(s)
H. Andou, T. Ohkado, N. Tsujiuchi & T. Koizumi
Abstract
A mount is designed that combines air-spring with viscous fluid. In this mount,
air-spring generates the dynamic stiffness, and the shearing of viscous fluid
generates the loss stiffness. The conceptual purposes are to adjust a neutral
position easily by changing the pressure of the air-spring and to prevent a rapid
drop of the damping performance from the stationary characteristics in the case
of excess load.
The purpose of this research is to evaluate damping properties of the
composite mount. First, the dynamic characteristics of the composite mount are
obtained by excitation tests of the mount itself. But the characteristics might not
be identified by the standard mechanical model accuracy because they depend on
not only excitation frequency but also amplitude. So the nonlinear dynamic
characteristics are identified using the five-element model with a variable
parameter. Finally, the composite mount is compared with the viscous mount by
simulation using the identified model, and the damping performance is
quantitatively indicated.
Keywords: mount, damping properties, five-element model, Maxwell model.
1 Introduction
The ride comfort for the hydraulic excavator has been strongly demanded every
year. Not only the structural durability of the cab but also the improvement of
cab vibration is an important requirement. The viscous mount is widely used as a
mount to reduce the cab vibration, which is shown in fig.1. The mount mainly
Keywords
mount, damping properties, five-element model, Maxwell model.
Related Book
Other papers in this volume
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