@Anonymous your model was not attached , so we cannot be sure what are your Mxx and Myy without knowing what you are setting as your local direction to show the results. but...
1- 1st of all if you also want to have results for the slab , then you cannot use the simplified method for distribution of the loads. Results from "Maps..." will show up but they will be completely wrong as the applied loads didn´t "pass" through the mesh nodes to go to its edges where they can find support. Imagining that you model has 4 beams and 4 pinned supports on the 4 corners , your applied loads will go directly to the longer beams. So Using the simplified method is only good for beam results and only accurate if the load is uniformly distributed and applied on the whole area of your slab/panel as the distribution is done using tributary areas. Simplified distribution can be very wrong for concentrated or contour loads!
2-For me , the best option to have results very similiar(as calculated by hand) to what you would have for an "ideal" one way slab would be using the material orthotropy as you already did.
Can you send the model ?
Geometry and slab thickness can have a great impact on the results
Rafael Medeiros
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not attached again. what is the file size?
Rafael Medeiros
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@Anonymous
Your vertical displacements are way too high probably because you set the wrong slab orthotropy direction .
Using the correct direction , global X , deflections are in fact smaller when comparing to the homogeneous slab type.
Comparison model attached
Rafael Medeiros
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