Host: The Japan Society of Mechanical Engineers
Name : Dynamics and Design Conference 2019
Date : August 27, 2019 - August 30, 2019
In this paper, an analysis of an energy harvesting device which converts a translational relative motion to an oscillatory motion via stick-slip motion is presented. The device consists of an L-shaped oscillator which is rubbed by a linearly moving frictional surface contacting at the tip. Preliminary studies showed that the oscillator showed variety of dynamical responses when rubbed by the surface. In this study, modeling of the oscillator as a 2-DOF system is carried out, and the equation of motion is derived via Lagrange equation. Four motion modes are defined in terms of the behavior of the tip motion, and the mode transition conditions are derived. A numerical simulation with a slow rubbing velocity and small attack angle is conducted, and calculation results exhibiting stick-slip motions similar to the experimental results are obtained.
