I am new to this site so please let me know if I can improve my question. A component of a robot I am designing includes a four-wheeled carriage that travels linearly on an aluminum surface. The wheels must be 3.5 inches in diameter, 0.5 inches thick and be able to bear 130 lbs of load together. Beyond that, I have complete freedom to select the wheel material and can surface the sheet aluminum however I want. I can replace the wheels every 10000 rotations and they need to be water resistant. Cost is pretty irrelevant.
How do you recommend maximizing the coefficient of friction between the wheel and surface? Is there a database which shows different wheels on different materials? Are there resources which outline the affects of different surfacing techniques on friction?
I am considering a pretty simple approach using 'off-the shelf' directional tread tires and aluminum oxide anti slip tape like what you see on some commercial stairs. Other ideas include using studded tires and roughing the aluminum surface. The overall goal is to make sure that the carriage does not slide when the wheels are not spinning using mechanical, not electronic/motorized means.