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Modelling of a frequency dependent damper in A/CAR

Modelling of a frequency dependent damper in A/CAR

(OP)
Hello gentlemen,

I'd like to ask for your help again. Do you know how to model a frequency depenedent damper in A/CAR? Just to be clear, the logic behind this damper is that there are several damping characteristics based on the wheel movement frequency. I can create multiple damper on top of each other with the different characteristics, then add a force actuator which would then create an opposite force to dampers I won't to be off. The only issue is how to set the logic for this actuator. Is there a function to obtain frequency of a relative movement?

Vojtech

RE: Modelling of a frequency dependent damper in A/CAR

You'd have to write your own sub for that , maybe in simulink. Conceptually there is a problem in that at any instant of time there isn't really a frequency in the motion, unless you are happy to use acceleration/velocity, which in practical terms is a nightmare.

Cheers

Greg Locock

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RE: Modelling of a frequency dependent damper in A/CAR

(OP)
Hello Greg,

thank you for your suggestion. Is there maybe a tutorial for user written subroutines?

Thanks,
Vojtech

RE: Modelling of a frequency dependent damper in A/CAR

Not that I know of. There is an MSC course on it, and in the Help there's file:///C:/Legacy/MSC.Software/Adams_x64/2013_2/help/wwhelp/wwhimpl/js/html/wwhelp.htm#href=adams_solver/user_written.html#1039495

Cheers

Greg Locock

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

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