Viscous Heating of Fluid Dampers. I: Small-Amplitude Motions
Publication: Journal of Engineering Mechanics
Volume 124, Issue 11
Abstract
The problem of viscous heating of fluid dampers is examined in this paper at the limit of small-amplitude motions where the heat transfer equation becomes linear. At this limit, a one-dimensional energy equation expressed at a cross section of the damper is proposed to approximate the three-dimensional heat transfer equation. The power input into the damper is represented by a distributed heat source located at the piston head. Solutions under different forcing functions are derived for the temperature rise within the damper as a function of time and position. Of particular interest are the solutions for the temperature rise adjacent to the piston head where most of the input energy is dissipated. The derived closed-form expressions can be directly used to estimate the steady-state temperature of fluid dampers subjected to long-duration, small-amplitude motions.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 124 • Issue 11 • November 1998
Pages: 1210 - 1216
Copyright
Copyright © 1998 American Society of Civil Engineers.
History
Published online: Nov 1, 1998
Published in print: Nov 1998
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