Impact Tutorial

I have been attempting to complete the impact tutorial ( impactprogram.wikispaces.com/Tutorial1 ) without success. When I post-process the output the upper right corner elements are missing. The displacements are massive so I assume these elements just broke off and basically flew away. This would be fine but the results obtained in the tutorial screenshots do not indicate such a prediction.

Thanks for any assistance in advance,
- Matt Bondy

It has been a couple of years since I did the tutorial, but I did not have this problem. You might want to check your input - see the attached files.

Thanks!