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Misc => Physics Questions => Topic started by: samsooom on October 13, 2009, 07:43:50 pm



Title: car simulation
Post by: samsooom on October 13, 2009, 07:43:50 pm
if i want tomake asimulation on a car .is it better to make the vectors(of thrust and weight and drag and friction and velocity)onthe wheels (tyres)or on the center of the car?
i thought that if it were on the center then the whole car will move horizantly when it climps up a hill or getting down? what is the right solution?
i will make it on c++ opengl... thank you


Title: Re: car simulation
Post by: Fu-Kwun Hwang on October 13, 2009, 08:51:52 pm
It depends on how much you want the simulation to be closer to the real situation.
If you only interesting in one dimension motion and want to know how position/velocity changes with time.
You can treat the car as a point. However, the drag will depends on the cross section of the car.

If you want to simulated different  weight between front/rear tires, you need to calculate different normal forces when car is accelerated or de-accelerated (Please check out Normal forces on front and rear tires when car is accelerated (http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=452.0)!).   

You need to re-calculate it if the car is moving up or going down a hill.

Write down detail description of your model (with equations) and I will check it for you!


Title: Re: car simulation
Post by: donnaj8887 on August 20, 2010, 05:08:02 pm
It depends on how much you want the simulation to be closer to the real situation.
If you only interesting in one dimension motion and want to know how position/velocity changes with time.
You can treat the car as a point. However, the drag will depends on the cross section of the car.

If you want to simulated different  weight between front/rear tires, you need to calculate different normal forces when car is accelerated or de-accelerated (Please check out Normal forces on front and rear tires when car is accelerated (http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=452.0)!).  

You need to re-calculate it if the car is moving up or going down a hill.

Write down detail description of your model (with equations) and I will check it for you!

Such a very amazing link!
Thanks you for the post.

-*-


Title: Re: car simulation
Post by: desertrose3 on January 16, 2012, 05:12:42 am
Thank you for making it so comprehensive. You don't know how much this helps my understanding.