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Proceedings Paper

Active and passive vibration control of flexible structures using a combination of magnetostrictive and ferromagnetic alloys
Author(s): Bishakh Bhattacharya; Vidyashankar R. Buravalla; Sophoclis Patsias; Geoffrey R. Tomlinson
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Paper Abstract

A combined passive and active damping strategy is proposed to control vibration in structures using a combination of layers of ferro-magnetic (passive) damping and smart (active) magnetostrictive material (Terfenol-D). Two types of combined damping systems are considered viz., a noninteractive system and an interactive or hybrid system. Numerical investigations on a cantilever beam model are carried out to investigate various aspects in combined damping scenario. Using variational principle, a beam Finite Element is developed to study the dynamic characteristics of a beam containing both the passive and active damping layers. It is shown that the combined system could be used effectively to dampen the structural vibration over a wide frequency range. Comparisons with only passive and only active damping schemes are also made. The influence and the mode dependence of control gain in a hybrid system is clearly brought out.

Paper Details

Date Published: 24 August 2000
PDF: 11 pages
Proc. SPIE 4073, Fifth European Conference on Smart Structures and Materials, (24 August 2000); doi: 10.1117/12.396401
Show Author Affiliations
Bishakh Bhattacharya, Univ. of Sheffield (United Kingdom)
Vidyashankar R. Buravalla, Univ. of Sheffield (United Kingdom)
Sophoclis Patsias, Univ. of Sheffield (United Kingdom)
Geoffrey R. Tomlinson, Univ. of Sheffield (United Kingdom)

Published in SPIE Proceedings Vol. 4073:
Fifth European Conference on Smart Structures and Materials
Pierre Francois Gobin; Clifford M. Friend, Editor(s)

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