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Thin notched sheet in bending in y direction

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Old   December 19, 2019, 14:16
Question Thin notched sheet in bending in y direction
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Hello everyone, i have a problem with this thin plate (see Attachment), for modeling I have simply modeled 1/4 of the structure, for element type i chose shell element at 8 nodes, for the constraints I put a double symmetry "bottom and right" of my plate (see attachment) and the load, which must be a bending moment along y, I assumed it 1000 and I applied the left end of the plate, on the nodes on the end and imposing a MY of 1.000 / Number of nodes ,the problem is that when I go to plot tension along x I get a value that goes out of my target, did I do something wrong? I thank you in advance

d = 50 mm (in the model I obviously put 25)
D = 75 mm (.... 37.5)
h = 1 mm
t = 12.5 mm
r = 2.05 mm
kt = 2.01
Attached Images
File Type: jpg structure.JPG (55.3 KB, 3 views)
File Type: jpg modelling 1.JPG (114.7 KB, 3 views)
File Type: jpg modelling 2.JPG (115.6 KB, 3 views)
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