Recent content by newlife

Chestermiller, thank you for your reply. Im simplify this complex problem cause my goal is to make a "simple" model suitable for real time games and simulation. No claiming to make an accurate and complex model. Anyway, what do you think about this approach (using Casing Tension)...

Yes but how to calc this force? Should I use the area of the rigidbody instead of the total area of the torus? This is interesting, cause I am adding the force to each rigidbody (in radial direction), and the rigidbodies are places radially around the rim, so theoretically the sum of the...

Russ, what I am trying to implement is a "physical" simulation of an inflated tire using a 3D engine. I mean, till now I modeled the tire as a spring and a damper. Spring force is proportional to tire deflection and damper force is proportional to deflection velocity. So when there is no...

So this means that my calcs are correct? It seems a bit strange that force exerted only by air is much higher than force exerted by air under a load.

phinds, I didnt make any research on that part of the question cause i didnt understand that (as for you reply) it was so simple. Anyway, I searched the exact meaning of pressure and, quoting wikipedia, "is the force applied perpendicular to the surface of an object per unit area over which that...

Hello phinds, thank you for your reply, even if its a bit rough :) Of course I searched online before posting here, but i just found a link that explain that force is equal to pressure x area (wrong search). Anyway, if I get it right, on all points of the tire (both internal and external) air...

Hello, Im asking myself how to calculate the force exerted by air in a inflated unloaded tire. We now that a tire can be modeled as a spring and a damper, with vertical deflection used as spring compression and deflection velocity as damper velocity. But how about a tire with no deflection...

Hi Bob can you explain me better what you mean with "assume the wheel will always be in the resting position each frame"? it seems interesting but i can't get it..

Hi Ruud, first of all i would like to thank you for the invaluable help you gave me (and all the sim developers) with your excellent web site, really packed with very useful and precise information for anyone interested in the argument. Well I am glad to tell you that I succeeded in making...

ok. // Spring calc SpringLen=(rayLength - radiusLoaded); compression = suspensionTravel - springLen; // Tire calc rate=suspensionRate/verticalTireStiffness; lastTireDeflection=tireDeflection; tireDeflection = springForce/verticalTireStiffness...

Sorry chiro what do you mean with DE relationship?

Hello chiro, thank you for your reply. I am aware about differential equations and in particular 4th order Runge-Kutta method. I have used it for slip ratio calculation, which is very prone to instability. The problem is that, as i wrote in the message, even if i choose a very small time step...

Hello everybody, Im trying to model a system made by a suspension and a tire for a vehicle simulator written in c#. I modeled both the suspension and the tire as a spring and a damper. So the model is formed by a spring and a damper in parallel (the suspension) in series with another spring...