In vacuo elastodynamics of a flexible cantilever for wideband energy harvesting

D. Tan; A. Erturk

doi:10.1117/12.2219391

15 April 2016 In vacuo elastodynamics of a flexible cantilever for wideband energy harvesting

D. Tan, A. Erturk

Proceedings Volume 9799, Active and Passive Smart Structures and Integrated Systems 2016; 979904 (2016) https://doi.org/10.1117/12.2219391
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2016, Las Vegas, Nevada, United States

Abstract

We explore the potential for bandwidth enhancement by merely exploiting the hardening nonlinearity of a flexible cantilever. To date, this cubic hardening behavior has been minor due to dissipative effects, especially fluid drag. The goal here is to minimize the fluid damping and thereby achieve the jump phenomenon. A vacuum setup that is compatible with the armature of a long-stroke shaker is employed. Experiments are conducted for a range of air pressure and base excitation levels. The overall nonlinear non-conservative elastodynamics of the cantilever is also modeled and experimentally validated by empirically accounting for fluid damping.

Citation Download Citation

D. Tan and A. Erturk "In vacuo elastodynamics of a flexible cantilever for wideband energy harvesting", Proc. SPIE 9799, Active and Passive Smart Structures and Integrated Systems 2016, 979904 (15 April 2016); https://doi.org/10.1117/12.2219391

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