Design and tuning of a bi-stable compliant mechanism

For use in energy harvesting using frequency up conversion

Master thesis (2022)

Authors

Stijn Rietmeijer Mechanical Engineering

Contributors

Thijs Blad Micro and Nano Engineering - Mechanical, Maritime and Materials Engineering (supervisor 1)
P.G. Steeneken Dynamics of Micro and Nano Systems - Mechanical, Maritime and Materials Engineering (supervisor 2)
F. Alijani Dynamics of Micro and Nano Systems - Mechanical, Maritime and Materials Engineering (supervisor 2)
Faculty
Mechanical Engineering
Copyright: © 2022 Stijn Rietmeijer
Energy Harvesting Bistability Vibration Energy Harvesting Ortho Planar Spring
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Published Date

20-05-2022

Language

English

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Faculty

Mechanical Engineering

Abstract

Vibration energy harvesting is a growing field of research. Harvesting energy from vibrations can be of use in devices in hard to reach places, such as sensors on a train track or a pacemaker. These devices makes use of batteries, which need to be replaced. Using energy harvesting this battery life could be improved.
The difficulty lies in harvesting low frequency vibrations. These vibrations are hard to harvest using a transducer such as a piezo. A solution could be using a frequency up converter, which can raise a vibrations frequency. This thesis shows the design of a Bi-stable Impact-driven Snap-through frequency up converter (BISup). Enhancing the behaviour of this bi-stable design could improve the energy harvesting capabilities. Different designs are made using ortho planar spring design, these designs are simulated and compared using ANSYS. These simulations are experimentally verified.