I am trying to compare FEM analysis to hand calculations for I-beam bending. I am using "Roark's Formulas for Stress and Strain", seventh edition, for hand calculation formulas. And Patran 03 (nastran 01) for the FEM.
The cross sections are height=4.5 in, flange width = 3 in, flange...
Have you found the limitations on the Euler-Bernoulli model? I have also been looking at similar problem except I am using a couple different models, an i-beam fixed/fixed w/load applied to the center, simple/simple load at center and fixed/free w/load at free end. Like you I have found that...