Identification And Simulation Of The Impact
Characteristics Of The Viscous Mount
Author(s)
H. Andou, T. Koizumi & N. Tsujiuchi
Abstract
Hydraulic excavators have many different front attachments, and they are
operated in various manners. Accordingly, stationary excitation and excessive
impact loads are applied to the operator cabin. In recent years, a variety of
mounts, including high viscous oil mounts, have been used to reduce the cabin
vibration. Many papers have shown the stationary characteristics of the viscous
mount has frequency- and amplitude-dependency, but there are few papers to
characterize the impact behaviour of the viscous mount. The objective of this
paper is to understand the impact behaviour of viscous mounts, which
corresponds to impact loads for the actual machine. First, the reaction force and
the response acceleration of the viscous mounts installed on the vehicle are
measured during a critical drop impact test. Next, the impact test of the mount is
performed to identify its impact characteristics. The test is performed with a
shock load equivalent to the load applied during the drop impact test for the
actual vehicle. The equivalent mass of the cabin is also applied to the mount
during this shock load test. The characteristics are estimated from the measured
data of the mount force and displacement at the initial impact by the least square
method. Then, the response acceleration on the mount is calculated by the
estimated characteristics using the impact load measured on the drop impact test
for the actual vehicle. Finally, it is found that the identified characteristics are
appropriate to correlate the calculated acceleration with the measured
acceleration on the vehicle.
1 Introduction
Hydraulic excavator is a general-purpose construction machine. Therefore, a
large variety of front attachments can be installed, for example, hammer, crusher,
Keywords
Related Book
Other papers in this volume
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