Open Access. Powered by Scholars. Published by Universities.®
Missouri University of Science and Technology
Opportunities for Undergraduate Research Experience Program (OURE)
Articles 1 - 2 of 2
Full-Text Articles in Mechanical Engineering
The Properties Of Bridgestone Ecopia Solar Car Tires (For The Umr Solar Car Team), Tessa C. Russell
The Properties Of Bridgestone Ecopia Solar Car Tires (For The Umr Solar Car Team), Tessa C. Russell
Opportunities for Undergraduate Research Experience Program (OURE)
Much of the energy used by a solar car can be attributed to overcoming rolling resistance, and rolling resistance comes predominantly from the tires. The main goal of this project was to better understand the properties of the Bridgestone Ecopia tires used by the UMR Solar Car Team. Experiments were conducted to obtain this objective, measuring the vertical stiffness, lateral stiffness, and contact patch shape and area. As expected, with decreasing pressure and increasing load, the vertical and lateral deflections increased as well as the tire contact patch area. The stiffness parameters of the tire measured experimentally were used in …
Adhesion Of An Axisymmetric Film Onto A Rigid Substrate: Application To A Mem-Rf-Switch, Ming-Fung Wong
Adhesion Of An Axisymmetric Film Onto A Rigid Substrate: Application To A Mem-Rf-Switch, Ming-Fung Wong
Opportunities for Undergraduate Research Experience Program (OURE)
A solid mechanics model is constructed to discuss the mechanical aspect of a MEM-RF-switch. A thin circular membrane clamped at the perimeter is adhered to a rigid cylindrical flat punch. A tensile load applied to the punch causes an interfacial de lamination. Once the contact circle shrinks to 0.1758 - 0.3651 of the punch dimension depending on the magnitude of the tensile residual stress on the film, a spontaneous delamination, or "pull-off', occurs and the film snaps from the substrate at a critical load and punch displacement. The theoretical model has significant implications in MEMS that involves active moveable films.