Nonlinear structural dynamics of a new sliding-mode triboelectric energy harvester with multistability

• DOI: 10.1007/s11071-020-05645-z
• Publication Date: 2020-05-02T10:02:25Z
• Authors: Yiqiang Fu; Huajiang Ouyang; R. Benjamin Davis
• Keywords: Multistability; Bistability; Oscillation (cell signaling); Restoring force

Abstract A new sliding-mode triboelectric energy harvester in the form of a cantilever beam with tip mass that is acted upon by both magnetic and friction forces modelled simulated. numerical scheme based on trapezoidal rule second-order backward difference formula (TR-BDF2) method introduced to solve combined non-smooth mechanical stiff electrical system. This first study structural dynamics harvesting; additionally, field induces multistability present. comparison between coupled uncoupled electromechanical models suggests electrostatic force electrodes can be ignored, which makes model preferable dynamical analysis. The influence non-conservative (the force) system investigated. It found distribution parametric plane changes even when small amount involved, areas bistability tristability shrink while monostability expands. among these three types stability reveals superiority invoking as it facilitates broadband harvesting. excitation level plays an important role inducing snap-through motion interwell oscillation) enabling crossing barriers wells. increase shrinks frequency band oscillations from high frequencies down low discrete sweep. An analysis basins attraction finds at bistable undergo only oscillations, tristable merely experience intrawell oscillations. intermingle each other systems. Finally, break into pieces and/or points.