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August 28, 2024 at 9:33 am
georg.gruber
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Thanks for the quick reply! Yes you are right, Wb,x,top is the secion modulus of the top flange. The generic equation for a rectangle shape is (width*height^2)/6. However the height of the top flange is only 2mm (see fig. 1, (40-36)/2. –> The top flange AND the bottom flange have a height of 2mm respectively. So in my opinion 26,67mm^3 is the correct section modulus for top flange (and of course also for the bottom flange).

So, still I don't know why I get this unrealisticly high stresses, when summing up sig_y,mean and sig_y :-(

Greetings from Berlin,
Georg

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