Mr. Lionel Bitman Profile

Lionel Bitman

Aerospace Engineer

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Proceedings Article | 27 June 2002 Paper

Electrorheological damper analysis using an Eyring-plastic model

Lionel Bitman, Young-Tai Choi, Norman Wereley

Proceedings Volume 4697, (2002) https://doi.org/10.1117/12.472667

KEYWORDS: Data modeling, Modeling, Mathematical modeling, Electrodes, Actuators, Head, Electronic filtering, Systems modeling, Control systems design, Smart structures

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This paper presents experimental and theoretical analysis of an electrorheological (ER) damper. To describe the practical damper characteristics on force vs. velocity and force vs. displacement responses, a new alternative to existing models is proposed. On the basis of an Eyring model, Eyring-plastic model is constructed by the combination of simple nonlinear functions. Therefore, the Eyring-plastic model has the advantage to be simple in its design and formulation, even though it is in the form of a nonlinear function. In addition, the Eyring-plastic model can capture quite well the practical damper responses, particularly, in both the preyield and the postyield states. An ER damper is configured and its damping force under various electric fields and excitation frequencies is experimentally tested. On the basis of the damper response tested, the Eyring-plastic model is constructed and its validation is proved by comparing the experimental and predicted damper data on force vs. velocity and force vs. displacement responses.

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