we found some error in the calculation of crippling allowable for I beam section.
Can you please verify our finding?
If yes, Is it a general error (also implemented in stiffened panels)?
If not, what are the reasons for the different calculation?
Height = 32 mm
Web, upper and lower flange thickness = 3 mm
Upper and lower flange widths = 90 mm
In the crippling stress reports, the b widths are reported as follows:
Flange Top 90 mm
Web 26 mm
Flange Bottom 90 mm
The b width of the web is reported as 26 mm, however if the thickness of the flange is taken into account, it should be 29 mm ( = 26 + 3/2 + 3/2)