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JRM Vol.34 No.1 pp. 131-139
doi: 10.20965/jrm.2022.p0131
(2022)

Paper:

Thermally Driven Vehicle Using Bimetal Rings

Akira Okuno, Shunsuke Yoshimoto, and Akio Yamamoto

The University of Tokyo
5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8563, Japan

Received:
July 9, 2021
Accepted:
November 1, 2021
Published:
February 20, 2022
Keywords:
bimetal, heat, thermal energy, energy harvesting, locomotion mechanism
Abstract
Thermally Driven Vehicle Using Bimetal Rings

Thermally driven vehicle using bimetal sheets

A two-wheeled vehicle using bimetal sheets that travels on a hot horizontal surface by using only thermal energy is proposed herein. Each wheel is wrapped with a bimetal sheet, and the deformation of the sheet causes the wheel to roll. The rolling motion is investigated based on a simple physical model to provide insights into the rolling principle and its characteristics. Subsequently, by comparing several different wheel structures, the optimal wheel structure for the vehicle is selected. The performance of the developed vehicle is tested on a hot plate whose surface temperature is 100°C higher than the ambient air temperature. It is discovered experimentally that the vehicle can travel at a speed of approximately 60 mm/s when no load is applied. The vehicle can travel by supporting a load of approximately 400 g, which is almost double its weight.

Cite this article as:
A. Okuno, S. Yoshimoto, and A. Yamamoto, “Thermally Driven Vehicle Using Bimetal Rings,” J. Robot. Mechatron., Vol.34, No.1, pp. 131-139, 2022.
Data files:
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Last updated on Sep. 26, 2022