Undefined function or method 'mtimes' for input arguments of type 'cell' ERROR

Hi everyone,

Ed = cell(1, lc); lc>1
--------------------------------------------
function [es]=bar3s(ex,ey,ez,ep,ed) 

b=[ ex(2)-ex(1); ey(2)-ey(1); ez(2)-ez(1) ];
 L=sqrt(b'*b);

   n=b'/L;   G=[   n      zeros(size(n)); zeros(size(n))     n   ];

   E=ep(1); A=ep(2); Kle=E*A/L*[ 1 -1; 1  1];

   N=E*A/L*[-1 1]*G*ed';
   es=N;

Error in ==> N=E*A/L*[-1 1]*G*ed';

Answer 1

[Azzi Abdelmalek]

Use

N=E*A/L*[-1 1]*G*[ed{:}]'

[Hamid]

I did it but got this error

??? Error using ==> mtimes
Inner matrix dimensions must agree.

thank you

[Azzi Abdelmalek]

Provide some data to test your code

[Hamid]

Ok.

lc=2
Ed: 1*2 cell= [45*6 double] [45*6 double]
b=[500;0;0]
n=[1 0 0]
E=2*10e5
A=00.1

[Azzi Abdelmalek]

What is ex ? provide all the needed data

[Hamid]

% es=bar3s(ex,ey,ez,ep,ed)
%-------------------------------------------------------------
% PURPOSE
%  Compute normal force in three dimensional bar element.
%
% INPUT:  ex = [x1 x2]
%         ey = [y1 y2]       element node coordinates
%         ez = [z1 z2] 
%    
%         ep = [E A]         element properties   
%                               E : Young's modulus
%                               A : Cross section area
%
%         ed : [u1 ... u6]   element displacements
%
% OUTPUT: es = [N]     normal force