Hi Caleb,
Mesh resolution issue - right? You have about only 2 ALE elms spanning the width of the pile! The mesh is too coarse so it simply cannot resolve the ALE matrial interface details you need. There is no magic. Just finer mesh and it will look better. But then finer mesh produces too big a model! There engineering judgement has to come into play. That I am not sure how to get around.
On the other hand you can try a test run and check the force|P on the pile, then see how good it is. Then make adjustments based on that. A mesh resolution study is always a good thing to do to understand your model characteristics.
Regards,
Ian
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