Re: A bumpy ride

[brian whatcott <inet@INTELLISYS.NET>]

I just scrambled back on the list ( Oh, the feeling of rejection...)
and saw this:

> > > A student asked me why bumps feel less bumpy when
> > > the car is traveling at a higher speed.

 From a modeling perspective, if I consider the car mass, suspension, tire
system as a low pass filter  ( it indeed must pass long sustained road
profiiles onto the body, else the suspension bottoms) then a higher
frequency impulse is further out of the pass band and is more highly
attenuated.

   That is not to say the suspension will thank you - it is more highly
stressed - but at least the sprung body emits a silent sigh of relief.

Personificatorialy yours,



brian whatcott <inet@intellisys.net>
Altus OK