A tire contact patch is closer to bubble gum than it is to concrete. -nonlinearity from both strain rate and temp. Concrete OTOH is rather linear (strain rate) and temp independent.
Quote:
Originally Posted by Sooner or later
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Do you agree that a concrete tire would have a larger contact patch as width is increased?..
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Because the weight would go up?
Let's say you
keep the weigh the same you would need to decrease the circumferential beam thickness... do you have positive pressure lending support in this imaginary concrete tire?
Are you considering nonlinear compressive strain rates for concrete? If you are, that is one fine hair to split.
I'm trying to imagine how you could see a concrete tire having a larger contact patch as width is increased.
Clearly, a concrete tire displaces very little actual area, resting on a very few high points in the granularity of the pavement. This means also that the flatness of the road would dictate where on the cylinder the contact happens. -- a line of contact is not likely. Anyway, as I said before, a wider concrete tire
may have a larger area were contact occurs, but that does not mean more area is in contact. --resting on a couple mm^2 high points 300mm apart does not make 600mm^2 of contact.