all formulas (mst) Flashcards
1
Q
radius of gyration, k, formula
A
k^2 = I/A
2
Q
second moment of area, I, formula
A
I = (b*d^3)/12
3
Q
euler buckling load, Pe, formula
A
Pe = n * (pi^2 * E * I)/ L^2
n = 1, when 2 free ends, n = 2, when 1 fixed 1 free, n = 4, when 2 fixed ends
4
Q
deflection formula
A
deflection = (W * L^3)/( 3 * E * I)
5
Q
safety factor formula
A
P design = UTS / safety factor
6
Q
ultimate factor of safety formula,
A
UFS = ultimate load / limit load
7
Q
limit MOS formula
A
limit MOS = (tested limit load - limit load) / (limit load)
8
Q
ultimate MOS formula
A
ultimate MOS = (tested ultimate load - ultimate load) / (ultimate load)
9
Q
design limit formula
A
design limit = n limit * weight
10
Q
design ultimate formula
A
design ultimate = design limit * factor of safety (1.5)
