Calculating Stress within Beam
Calculating Stress within Beam
(OP)
I am looking to calculate normal and shear stresses within an assembly I made using Inventor. I need to calculate stresses based on assumed loadings, and I was not sure how to do that. We learned in school to use shear stress = VQ/It + Tc/J and normal stress = P/A + Mc/I, with correct definition of variables to calculate these values. Is this an accepted method in engineering? Or do I need to use some type of software for my calculations? I simply want to calculate these stresses for an assembly used to lower down and unfold a horizontal platform. I just need to know if this method is solid.
Thank you,
Alan
Thank you,
Alan






RE: Calculating Stress within Beam
if you're wanting to do hand calcs to verify the design, then sure. I'd simplify it to ...
1) the web needs to carry the shear load (V/dt),
2) the caps carry the bending (M/d/A), and probably the compression cap is critical,
3) buckling/crippling allowables are tricky
4) if torsion, design a closed section, stress = T/(2[A]*t)
another day in paradise, or is paradise one day closer ?