Adams acceleration magnitude

Hello,

I am simulating an experimental gearbox in Adams. When complaring the gearbox vibrations (accelerations) between the experimental measurements and the Adams requests, there is a huge difference in magnitudes. The units in Adams are in mm, but I always make sure to turn them into m so as to compare them to the experimental measurements. I am using the default Adams solver settings, except from the fact that I use multithreading as PREFERENCES/, NTHREADS = 4.

I have also read in the documentation that the I3 integrator (which is the default|) may not calculate the accelerations properly, but this great a difference in magnitude shouldn't be related to that.

Are there any other things I should look into that might help mitigate my problem?

P.S.

I am using flexible bodies (the gearbox included) in order to allow for some flexibility in the model.

Thanks,

Josef

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0 Josef K. over 3 years ago

Hello,

Unfortunately the SI2 formulation requires huge amounts of time for this model (using SI2 instead of I3, without limiting the max iterations of SI2 took 3 days of simulation instead of 15 minutes).

I do want to observe convergance but I do not know where from. Is there a visulization tool in Adams? How will I know if my displacements/accelerations have converged?

Thanks,

Josef
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0 Josef K. over 3 years ago

Hello,

Unfortunately the SI2 formulation requires huge amounts of time for this model (using SI2 instead of I3, without limiting the max iterations of SI2 took 3 days of simulation instead of 15 minutes).

I do want to observe convergance but I do not know where from. Is there a visulization tool in Adams? How will I know if my displacements/accelerations have converged?

Thanks,

Josef
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