
#1
Dec1313, 04:38 PM


#2
Dec1313, 06:30 PM

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In order to analyze these beam problems properly, you should calculate the support reactions and construct the shear force and bending moment diagrams. The maximum bending moment will occur at a location where the shear force is zero. However, since you are looking to calculate the max. stress, there may be a location along the beam where the combined stress due to bending and shear may be a maximum. The magnitude of the max. stress can be determined using Mohr's circle. Analyzing an Lsection is tricky because of the asymmetrical nature of the beam. The shear center for an Lsection lies outside of the beam itself, and applying a shear force anywhere except thru the shear center leads to the creation of a torsional moment on the beam.



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