An electroactive polymer based concept for vibration reduction via adaptive supports

Kai Wolf; Tobias Röglin; Frerk Haase; Torsten Finnberg; Bernd Steinhoff

doi:10.1117/12.776294

10 April 2008 An electroactive polymer based concept for vibration reduction via adaptive supports

Kai Wolf, Tobias Röglin, Frerk Haase, Torsten Finnberg, Bernd Steinhoff

Proceedings Volume 6927, Electroactive Polymer Actuators and Devices (EAPAD) 2008; 69271F (2008) https://doi.org/10.1117/12.776294
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2008, San Diego, California, United States

Abstract

A concept for the suppression of resonant vibration of an elastic system undergoing forced vibration coupled to electroactive polymer (EAP) actuators based on dielectric elastomers is demonstrated. The actuators are utilized to vary the stiffness of the end support of a clamped beam, which is forced to harmonic vibration via a piezoelectric patch. Due to the nonlinear dependency of the elastic modulus of the EAP material, the modulus can be changed by inducing an electrostrictive deformation. The resulting change in stiffness of the EAP actuator leads to a shift of the resonance frequencies of the vibrating beam, enabling an effective reduction of the vibration amplitude by an external electric signal. Using a custom-built setup employing an aluminum vibrating beam coupled on both sides to electrodized strips of VHB tape, a significant reduction of the resonance amplitude was achieved. The effectiveness of this concept compared to other active and passive concepts of vibration reduction is discussed.

Citation Download Citation

Kai Wolf, Tobias Röglin, Frerk Haase, Torsten Finnberg, and Bernd Steinhoff "An electroactive polymer based concept for vibration reduction via adaptive supports", Proc. SPIE 6927, Electroactive Polymer Actuators and Devices (EAPAD) 2008, 69271F (10 April 2008); https://doi.org/10.1117/12.776294

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