Open Access

ABSTRACT

FE-Simulation of Nonlinear Vibration and Stability Control of Smart Structures

S. Lentzen¹, R. Schmidt¹

1 Institute of General Mechanics, RWTH Aachen University, Germany

The International Conference on Computational & Experimental Engineering and Sciences 2008, 6(4), 201-206. https://doi.org/10.3970/icces.2008.006.201

Abstract

In the present work the significance of considering geometrical nonlinearity in the application of piezoelectric materials in order to improve the dynamic and stability characteristics of thin structures is shown. For the numerical investigations a finite shell element has been used which employs strain displacement relations based on the first-order shear deformation moderate rotation theory. An ANS formulation has been used to overcome membrane and shear locking. Two numerical examples are shown. The first example deals with increasing the critical buckling load by incorporating piezoelectric layers into the structure. In the second example the nonlinear vibrations of a cantilevered beam are damped with a simple velocity proportional control.

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