intermediate beam analysis
intermediate beam analysis
(OP)
If you have two intermediate beams (cross beams) intersecting each other (imagine a square area cut into 4 equal areas by interior beams), with the same depth, material, length, loadings, tributary area, how would you analyze the intermediate beams and the assumption for support condition(without the use of FEM)?






RE: intermediate beam analysis
RE: intermediate beam analysis
Mike McCann
MMC Engineering
RE: intermediate beam analysis
I would just use the diamond shaped loading area created by the lines between the support points. So triangular shaped loading on each of two beams.
Now if the loading is by one continuous plate, I would just multiply the results by 1.25.
RE: intermediate beam analysis
Here is my understanding: In order to get the spring stiffness provided by the stiffer beam, one must get the deflection, but to get the deflection we must know how much load is the beam carrying, the amount of load the stiffer beam is carrying from the less stiff beam is dependent on the spring stiffness. hence it brings me into a loop
RE: intermediate beam analysis
RE: intermediate beam analysis
this can be shown in two ways ...
1) let both beams react an equal amount of the applied load (ie 4 beams = 1/4 per) then allow the stiffer beam to react load from the weaker beam at their common point; or
2) let the stiffer beam react more of the applied load, something like (P/4)*x, and the weaker beam (P/4)*(1-x) and adjust the proportioning "x" untill displacements at teh common point at the same.
nit-picking the previous post, the loading can be considered uniform (for easy of calculation) but i suspect the "real" loading is non-uniform.
Quando Omni Flunkus Moritati
RE: intermediate beam analysis
RE: intermediate beam analysis