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Tire Modelling

thread823-474880

Tire Modelling

Tire Modelling

(OP)
I have tried to model the motorcycle tire in Adams view in which I gave input the area moment of inertia Ixx,Iyy, and Izz ( polar moment of inertia ) and I used pac2002_175_70R13.tire. I had expected that the tire and rim model will look like a motorcycle tire assembly but it looks like a car's tire assembly having a greater thickness. Also is there any way so that we can also made tire tread? and what about the spokes wheel? can we model the wheel with spokes too?
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RE: Tire Modelling

a 175_70R13 tire is a car tire, quite a small one these days.

No, you can't model a spoked wheel, easily, but you can import a suitable 3d model of one for the graphics. Not something I've bothered with. Basically you'd create a graphics object and connect it to the wheel part with a fixed joint.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?

RE: Tire Modelling

(OP)
So which model do I need to use to model the motorcycle tire?

Thanks for your valuable suggestion !!!

RE: Tire Modelling

Getting hold of tire data is rather hard. Typically a decent tire test costs tens of thousands of dollars, and wrecks half a dozen tires. I wonder if perhaps one of Tony Foale's books or a google search on pacejka model motorcycle tire would lead you to some better numbers?

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?

RE: Tire Modelling

(OP)
There are so many tire models in Adam's library. I doubt all of them are only for the car because some models are lool like motorcycle tire assembly geometrically. And another thing, I guess tire tread pattern also plays a role in the analysis. But I haven't seen the tread in the geometrical model. Maybe, It is taken into account in somehow in the model without representing visually.

RE: Tire Modelling

Tread pattern is not represented by the tire model. The tire model is effectively an n dimensional fit to a series of tests, it just spits out 3 forces and 3 moments in response to 6 inputs. Again you could import a pretty picture of a tire to overlay on the wheel, it wouldn't deform.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?

RE: Tire Modelling

(OP)
Thank you for your suggestion!! dazed

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