Cosmos motion- Torsion damper is not functioning

[FGMech]

Hi,

If someone could please help.

I am running a motion simulation on an A arm suspension, and I apply a torsion spring and Damper to a joint to create a spring damper system. However, when i run the simulation only the spring takes affect, and regarsdless how much I increase the damping coefficient, the system doesnot damp. It seems as if the damper component is being considered in the simulation.

I am running COSMOS motion 2006

are there any suggestion?

Thanks

 

[cbrn]

Hi,
depends on what you mean by "doesn't damp". If your timesteps are too large, you may skip any effect; same thing if your load application is static or quasi-static.

Regards

 

[FGMech]

Thanks for your reply

By not Damping I mean that the tosrsion spring does cause the A arm suspension to oscillate when displaced, but the systems amplitude isnt being reduced. In other words the system acts as if it didnt have a torision damper acting on it, no matter how great the damping coeffient is.

As for the time step, I dont know where that is set in program; likewise withe the load application settings. I believe the load is static. I loaded only the chasis side of the suspension. the arms and wheel carrier are massles.