Nonlinear Dynamics of a Magnetically Coupled Dielectric Elastomer Actuator

Abstract

The magnetically coupled dielectric elastomer actuator (MCDEA) is an emerging two-degree-of-freedom system that demonstrates rich dynamical behavior, which is important for applications in robotics, energy harvesting, and smart structures. However, the complex nonlinear dynamical behavior that can arise in such a system is challenging to predict. The authors develop a numerical model that can accurately characterize these dynamics, and thus suggests control strategies to manage $e.g.$ the appearance and amplitude of a specific resonance. These insights will impact engineering solutions for active vibrational control, energy harvesting, and programmable soft motors.