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Proceedings Paper

Hybrid damping of smart flexible rotating beam
Author(s): Ankur Gupta; Bishakh Bhattacharya
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Paper Abstract

In this paper an effort has been made to model and damp a rotating flexible beam with a rotary joint. In this work bending of flexible beam is considered using Euler-Bernoulli beam theory. To model a flexible beam, which is esentially a continuous system, it is discretized by using finite element method. After finding the expression for displacement at any point using finite element method, the dynamic equations of motion are derived using Lagrangian formulation. Time response results are obtained for undamped and viscous damped systems. Finally flexible beam is modelled as a typical laminated composite beam made up of number of layers of passive damping coating and a magnetostrictive material. A combined passive and active damping strategy in hybrid mode using combination of layers of ferromagnetic (passive) and smart (active) magnetorestrictive (Terfenol-D) materials is proposed.

Paper Details

Date Published: 14 October 2003
PDF: 8 pages
Proc. SPIE 5062, Smart Materials, Structures, and Systems, (14 October 2003); doi: 10.1117/12.514651
Show Author Affiliations
Ankur Gupta, Indian Institute of Technology, Kanpur (India)
Bishakh Bhattacharya, Indian Institute of Technology, Kanpur (India)

Published in SPIE Proceedings Vol. 5062:
Smart Materials, Structures, and Systems
S. Mohan; B. Dattaguru; S. Gopalakrishnan, Editor(s)

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