www.pudn.com > WebsiteCode.zip > deflectionconstraint.m, change:2008-07-24,size:1040b


function Delta=deflectionconstraint(x) 
% Delta=deflectionconstraint(x) 
% 
% Calculates deflection constraint 
% 
% Global variables used: 
%   BeamProperties 
% 
% Copyright 2007 A I J Forrester 
% 
% This program is free software: you can redistribute it and/or modify  it 
% under the terms of the GNU Lesser General Public License as published by 
% the Free Software Foundation, either version 3 of the License, or any 
% later version. 
%  
% This program is distributed in the hope that it will be useful, but 
% WITHOUT ANY WARRANTY; without even the implied warranty of 
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser 
% General Public License for more details. 
%  
% You should have received a copy of the GNU General Public License and GNU 
% Lesser General Public License along with this program. If not, see 
% <http://www.gnu.org/licenses/>. 
 
global BeamProperties 
b=x(1)*0.045+0.005; 
h=x(2)*0.23+0.02; 
Iy=b*h^3/12; 
Delta=(BeamProperties.F*BeamProperties.L^3)/(3*BeamProperties.E*Iy)-0.005;