Uncontrolable oscillation at lower speeds (< 10KMPH) in Front Wheels in Lateral Direction, Where as the oscillations disappear above 15KMPH

ilapakurti Venkata Naga over 5 years ago

My ADAMS Car Model sets up an uncontrollable oscillation at lower speeds (< 10KMPH)

The vehicle is Front Engine Front wheel driven type

Simulation: 10KMPH Mainitain on Plain road

The oscillation is observed in Front Wheels

The Oscillation is missing above 15KMPH

I have checked all the bushes for Self excitation warning. Nothing

Power train is connected properly to the drive shafts and drive shafts are properly attached to the spindle.

Solver Setting Used: GSTIFF/I3

SI2 setting is giving an acceptable result, but I am wondering if I am missing something in modelling. If anybody else has encountered any such problem, please guide.

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0 Martin Kieltsch over 5 years ago

You have a >5 deg side slip angle when going straight ?

Next to the driver model, it can also happen when the wheel is wobbling during rotation (for example due to unbalanced masses, too soft stiffness in the tie-rod or misalignment of rotational axes)

Have you checked the animation & results ?

If the steering demand shows this effect, then it's the driver.

If it's just the wheel, then animate with icons on to see if there's misalignment.
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0 Martin Kieltsch over 5 years ago

You have a >5 deg side slip angle when going straight ?

Next to the driver model, it can also happen when the wheel is wobbling during rotation (for example due to unbalanced masses, too soft stiffness in the tie-rod or misalignment of rotational axes)

Have you checked the animation & results ?

If the steering demand shows this effect, then it's the driver.

If it's just the wheel, then animate with icons on to see if there's misalignment.
Cancel
Vote Up 0 Vote Down

Sign in to reply

Verify Answer

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