Hello @efischer. Your project got my attention but I have some observations about it. It seems that are using different types of loads in each run so you cannot compare the results between them at all. In your first run you are applying a pressure of 1431000 Pa. In the second one you are using a volume load of 78500 N/m3 in x-direction and a force of 330 N in x-direction and finally for the third run you have the same volume load of 78500 N/m3 in x-direction but a negative pressure of 1431000 Pa. In the screenshots below, you can see the comparison between the three runs, the first one is bending the other way. I’d recommend to take a look again at the applied loads for a better interpretation of the results.