Hybrid damping of smart flexible rotating beam

Ankur Gupta; Bishakh Bhattacharya

doi:10.1117/12.514651

14 October 2003 Hybrid damping of smart flexible rotating beam

Ankur Gupta, Bishakh Bhattacharya

Proceedings Volume 5062, Smart Materials, Structures, and Systems; (2003) https://doi.org/10.1117/12.514651
Event: Smart Materials, Structures, and Systems, 2002, Bangalore, India

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.

Citation Download Citation

Ankur Gupta and Bishakh Bhattacharya "Hybrid damping of smart flexible rotating beam", Proc. SPIE 5062, Smart Materials, Structures, and Systems, (14 October 2003); https://doi.org/10.1117/12.514651

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