doubt in tire design.

[Vignesh Billan]

what are the vertical forces acting on a tire while in motion?

please suggest me formulae to calculate relevent forces..

[RaceCatt69]

first you need the volume and density of your entire vehicle. divide the density by the volume. then multiply that number by the atmospheric air pressure. multiply by the vertical acceleration of the vehicle due to gravity. then for the last step divide by the (atmospheric air pressure x 4)

that will give you the normal force on each tire while the vehicle is moving in a straight line at a constant speed. assuming you have a 50/50 front/rear weight balance

[Racer-X]

Racecatt is a moron don't listen to him.

Think about the weight of your car, and the weight transfer under acceleration and decel and there you go.

[Vignesh Billan]

thank you sir http://fsae.com/groupee_common/emoticons/icon_smile.gif

[Will M]

Originally posted by Racer-X:
Racecatt is a moron don't listen to him.
.

That said... I am fairly sure his Rube Goldberg equation is correct.

-William

[Vignesh Billan]

assume the following factors.
gross weight-300 kg
CG location-55% at rear
wheelbase-1600 mm
reference frontal area-10000 square mm

please suggest me the formulea to calculate
1.lateral tires forces
2.load on tire

[M. Nader]

Other than what Racer-X said, consider jacking forces. there is already a long thread on that

[Ben A]

F=M*a

[acedeuce802]

http://cdn.memegenerator.net/instances/400x/20202239.jpg

[Vignesh Billan]

those who have knowledge about tire design alone post your comments here...please

[acedeuce802]

You say in the thread title that you have doubt in tire design. But, you haven't mentioned what those doubts are. What do you want to know about the design of the tire? Or are you talking about how to design for a given tire?

Do you have TTC data? Considering how expensive tire testing is, and that the initial payment is more like a "lifetime membership" it really is a great resource. This is the best way to really understand your tires.

[onemaniac]

Originally posted by Vignesh Billan:
those who have knowledge about tire design alone post your comments here...please

acedeuce gave you the right advice.
On this forum, people do not appreciate when you simply ask for an answer without showing them what you have tried to find the answer yourself.
For this case, the first thing you do is a FBD. Don't you agree?
If you have done some work, show us what exact doubts you have in tire design.

[rmk36]

There is no general equation for calculating lateral forces from a tire. This is achieved experimentally.

For tire normal loads use google to search vehicle load transfer.

[Marvel]

Originally posted by Vignesh Billan:
what are the vertical forces acting on a tire while in motion?

please suggest me formulae to calculate relevent forces..
Vignesh,
There are many things to consider when it comes to tire and suspension.
All you have to do is prioritize the goal of your car and your team.
Its good to take suggestions from many experts here, but you should first give your effort, try and research.
You will get many threads on the topic you have asked and many which you probably want to ask.
Just hit the search button.
And google is always your friend.
Show what efforts you have taken and then frame your doubts clearly.People will definitely help you out here..
For a start just read-
http://fsae.com/eve/forums/a/t...25607348/m/217101453 (http://fsae.com/eve/forums/a/tpc/f/125607348/m/217101453)
For books refer-
http://fsae.com/eve/forums/a/t...5607348/m/1956095883 (http://fsae.com/eve/forums/a/tpc/f/125607348/m/1956095883)
Hope this helps..