How to find initial damper curves

[Wlamers]

Hello guys,

I was wondering how most of you find the initial damper curves to start off with.

Do you try to find them within a multi-body vehicle model (ADAMS?) and then tune them or use a optimisation routine?

Or maybe just start off with a certain amount of critical damping a tune them on the circuit during test days? If this is the case, how do you interpretet you logged data?

Or is there another better/easier way?

Willem-Jan

[Wlamers]

Hello guys,

I was wondering how most of you find the initial damper curves to start off with.

Do you try to find them within a multi-body vehicle model (ADAMS?) and then tune them or use a optimisation routine?

Or maybe just start off with a certain amount of critical damping a tune them on the circuit during test days? If this is the case, how do you interpretet you logged data?

Or is there another better/easier way?

Willem-Jan

[Jersey Tom]

Spring mass damper system... one in bump, one in roll. Know mass (or inertia). Know what springrate you want (roughly). Pick damper rate.

Check out teh 6 part series on the OptimumG website under tech tips.

[Tony K]

Knowing the geometry, and especially rising or falling rate characteristics of your damper installation is key as well. The damper curve shape (digressive / regressive), and location of the transition points is very important depending on how they're being activated in the car in bump and roll.

[mtg]

Read the Spring & Damper (http://www.optimumg.com/news_archives.htm) Tech Tips.