Hi All,
l am modeling a composite slab on girder bridge on ANSYS APDL following the shown procedure.
I connected the shell element slab to the beam by using MPC184 rigid links.
All of my elements have 6 degrees of freedoms (compatible) and it's a linear static analysis.
I am applying a lateral force in the Z direction along the bridge parapet/railing.
Self weight / gravity is not added.
The nodes from all elements match and the meshing seems fine.
Its a simply supported bridge (roller on one side and hinge on the other)
The deformed shape of the bridge under lateral loading looks okay. But the reaction forces do not make sense. I change the location of the force laterally and the reaction forces do not change.
I glued the areas/lines before meshing.
What could possibly be wrong? I see it as a connectivity error but am not sure where I went wrong
Hi
detect the fault, firstly change the mesh (reduce the number of the cell); if still,
change the value of the input parameters, one by one.
make a simpler geometry and run the same model on.
In which location you used rigid link? According to the image, I understood you use both shell element for slab, girder and railing. I think you no need to use any rigid link. Just model three component (slab, girder and railing) using shell element. The do the mesh such that each element are connected properly. Then run the analysis.
You can check the following thesis paper.
Thesis DYNAMIC BEHAVIOR AND DISTORTION-INDUCED STRESS IN CURVED MUL...
Thanks Dr. Hayder Ibrahim Mohammed for your comment.
Will a finer mesh make a huge difference in the results of the reactions and stresses in a composite model?
Because my stresses are wrong as well
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