function [StrainState] = stress2strain(StressState,E,poisonts)
%STRESS2STRAIN Converts stress to strain.
% STRESS2STRAIN([SIGMAX,SIGMAY,TAUXY],E,POISSONS) Converts a stress state
% to the equivalent strain state.
% SIGMAX: Normal stress in the X direction.
% SIGMAY: Normal stress in the Y direction.
% TAUXY: Shear on the X-Y plane.
% Together these three are gathered as the STRESSSTATE.
% E: Young's Modulus
% POISSONS:Poisson's ratio.
% See also MOHRS, PPSTRESS, PRISTRESS, STRAIN2STRESS, STRESSTR.
% Details are to be found in Mastering Mechanics I, Douglas W. Hull,
% Prentice Hall, 1998
% Douglas W. Hull, 1998
% Copyright (c) 1998-99 by Prentice Hall
% Version 1.00