This online axial Euler buckling solverwill determine the Euler buckling load for an axial member with
up to 5 segments each with its own elastic modulus and area moment of inertia.  Boundary conditions
of free, simple support, fixed slope and or elastic spring can be applied at the start and end of each
segment.  The output includes the buckling load, maximum compression stress using the smallest
input area and a slenderness ratio using the full length and smallest EA value.  The later two output
parameters can be used to determine if Euler buckling is an adequate representation of the
simulation.  Compression stress values approaching the material yield and low slenderness ratios
suggest nonlinear buckling maybe more appropriate.

The calculator matches the classic Euler buckling equation Pcr = EI(π/KL)2 for simple-simple (K=1),
fixed-fixed (K=0.5), simple-fixed (K=0.7) and fixed-free (K=2) end conditions.