This calculator computes the maximum stress of a free on one edge, clamped on three edges rectangular plate under a uniformly distributed load.

Inputs
Loading:	Uniform Load p =     Pa kPa MPa GPa psi ksi lbf/ft^2 kgf/cm^2 atm bar mmHg inHg ftH2O
Geometry:	Width Lx =     km m cm mm micron mi yd ft in mil  Length Ly =    Thickness h =     km m cm mm micron mi yd ft in mil Boundary   Free edge along x axis   Free edge along y axis
Material:	Young's modulus E =     Pa kPa MPa GPa psi ksi lbf/ft^2 kgf/cm^2 atm bar mmHg inHg ftH2O  Poisson's ratio =
Output:	Unit of displacement w =   km m cm mm micron mi yd ft in mil  Unit of stress =   Pa kPa MPa GPa psi ksi lbf/ft^2 kgf/cm^2 atm bar mmHg inHg ftH2O

Notice that the maximum stress is expressed in terms of the length of the clamped edges that are adjacent to the free edge and the values of c₂ are listed in the following table.

LFree Edge/LCC Edge	0.25	0.5	0.75	1.0	1.5	2.0	3.0
c2	0.020	0.081	0.173	0.321	0.727	1.226	2.105

Hence, _max = 0.202474389384 MPa 0.202 MPa

The formula is valid for materials that have Poission's ratios around 0.3. The coefficient c₂ is calculated by polynomial least-square curve-fitting.