Nonlinear equations of motion for elastic bending and torsion of isotropic rotor blades with piezoceramic actuation

Dipali Thakkar; Ranjan Ganguli

doi:10.1117/12.514624

14 October 2003 Nonlinear equations of motion for elastic bending and torsion of isotropic rotor blades with piezoceramic actuation

Dipali Thakkar, Ranjan Ganguli

Author Affiliations +

Proceedings Volume 5062, Smart Materials, Structures, and Systems; (2003) https://doi.org/10.1117/12.514624
Event: Smart Materials, Structures, and Systems, 2002, Bangalore, India

Abstract

Nonlinear equations of motion for elastic bending and torsion of isotropic rotor blades with surface bonded piezoceramic actuators are derived using Hamilton's principle. The equations are then solved using finite element discretization in the spatial and time domain. The effect of piezoceramic actuation is investigated for bending and torsion response of a rotating beam. It is found that the centrifugal stiffening effect reduces the tip transverse bending deflection and elastic twist as the rotation speed increases. However, the effect of rotation speed on the tip elastic twist is less pronounced. The importance of nonlinear terms for accurate prediction of torsion response is also shown.

Citation Download Citation

Dipali Thakkar and Ranjan Ganguli "Nonlinear equations of motion for elastic bending and torsion of isotropic rotor blades with piezoceramic actuation", Proc. SPIE 5062, Smart Materials, Structures, and Systems, (14 October 2003); https://doi.org/10.1117/12.514624

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