Multi-axial bending and Superposition
Multi-axial bending and Superposition
(OP)
I have beam (no this is not a homework problem!) that's loaded in two axis, both x-x and y-y. Is it valid in any way to calculate each stress and deflection of each separately and then combine them to get the overall case? If this approach isn't valid, what should I look at next?
Thanks!
John
Thanks!
John






RE: Multi-axial bending and Superposition
corus
RE: Multi-axial bending and Superposition
RE: Multi-axial bending and Superposition
RE: Multi-axial bending and Superposition
Thanks,
John
RE: Multi-axial bending and Superposition
the principal axes will be at some angle to the resultant moment vector ...
components into the principal axes directions ...
superimpose the stresses at key points on the section from both moment components.
it's a bunch of work (but then that's what we're paid for, right ?)
RE: Multi-axial bending and Superposition
If you have no P, then you have no second order effects (read P-delta) effects - no P means no P-delta.
RE: Multi-axial bending and Superposition
Working with factored loads (LRFD) you'd find Mx and My and then check them with an interaction equation such as what AISC provides in their spec.