Resonant manifestation of intrinsic nonlinearity within electroelastic micropower generators

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2010-12-20

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Abstract

This letter investigates the nonlinear response of a bimorph energy harvester comprised of lead zirconate titanate (PZT-5A) laminates. For near resonant excitations, we demonstrate significant intrinsic nonlinear behavior despite geometrically linear motion. Fourth order elastic and electroelastic tensor values for PZT-5A are identified following methods recently published concerning a PZT-5H bimorph. A response trend indicative of a nonlinear dissipative mechanism is discussed as well as the inadequacy of linear modeling. The PZT-5A bimorph exhibits an increased softening frequency response in comparison to PZT-5H. The results contained herein are also applicable to electroelastic sensor and actuator technologies. © 2010 American Institute of Physics.

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10.1063/1.3530449

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Stanton, SC, A Erturk, BP Mann and DJ Inman (2010). Resonant manifestation of intrinsic nonlinearity within electroelastic micropower generators. Applied Physics Letters, 97(25). p. 254101. 10.1063/1.3530449 Retrieved from https://hdl.handle.net/10161/5089.

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