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The wiggles in the model are a combination of a low frequency oscillation overlaid with the driving frequency of the base. I'm not sure why we don't get the same wiggles as in the paper. I did a few one-step simulations but the top mass had much larger amplitudes than the base.
The wiggles in the model are a combination of a low frequency oscillation overlaid with the driving frequency of the base. I'm not sure why we don't get the same wiggles as in the paper. I did a few one-step simulations but the top mass had much larger amplitudes than the base. 
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