Chassis Yaw Polar Moment Of Inertia

[jakethesnake180]

Hi, Im fairly new to this forum, only a few posts so far but its very apparent that its a great resource for anyone in the industry or anyone who has an interest in the sport.
I wonder if someone can help with a question!

Im running a lap simulation project. Im wondering what kind of value to expect for chassis yaw polar moment of inertia in kg/m^2
for a chassis used in something like LMP1 shall we say.

Hope someone can help.

Jake

[Jersey Tom]

If you're working for a LMP1 client.. and need a fairly accurate estimate.. you might as well measure it or approximate it in CAD.

If you're just screwing around... you could start by approximating it as a homogeneous plate... maybe even using the unsprung component as point masses on the corners.

And let's not forget gyroscopic effect...

[autogyro]

This is not motivated by Paul (Lord) Draysons Sebring incident just now is it?

[jakethesnake180]

Hey, it is for a research project for a university and a component manufacturer and i am struggling to find information as i do not have access to a chassis, i could mock up a chassis in CAD but do not know specifics about the materials, i could research this but any more suggestions? the study is more of a feasability study so a ball park figure i can work from and then confirm using my cad drawings would be good.
Thanks for the help

Jake

[jakethesnake180]

Oh and by the way, this isnt motivated by Sebring