Why zero values in matrix
14 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
%hello, here eventhough matrix components are not zero, I am getting zero values when I put A a very large number. %Is there any way to avoid such?
E = 1;
I_z = 1;
%E_Iz = E*I_z;
R = 1;
L = R; %R
%A = 1;
A = 10^9; %so that axial strain is very small
% K1 = A*E/L;
% K2 = 12*E*I_z/L^3;
% K3= 6*E*I_z/L^2;
% K4 = 4*E*I_z/L;
% K5 = 2*E*I_z/L;
% for element 1
Ke_1_local = [A*E/L 0 0 -A*E/L 0 0;
0 12*E*I_z/L^3 6*E*I_z/L^2 0 -12*E*I_z/L^3 6*E*I_z/L^2;
0 6*E*I_z/L^2 4*E*I_z/L 0 -6*E*I_z/L^2 2*E*I_z/L;
-A*E/L 0 0 A*E/L 0 0;
0 -12*E*I_z/L^3 -6*E*I_z/L^2 0 12*E*I_z/L^3 -6*E*I_z/L^2;
0 6*E*I_z/L^2 2*E*I_z/L 0 -6*E*I_z/L^2 4*E*I_z/L ]
0 Commenti
Risposta accettata
Walter Roberson
il 30 Ott 2022
Modificato: Walter Roberson
il 30 Ott 2022
you overlooked the 1.0e+09 * at the top of the display. Those 0.0000 are not true zeros, they are 1.0e+09 * a number that is 0.0000 to four decimal places.
I suggest that you give the command
format long g
and then ask to display the matrix
3 Commenti
Stephen23
il 30 Ott 2022
"I mean for example value at 2, 2 is zero right..."
No, it is not. If the value is exactly zero then MATLAB displays it as "0". The trailing zero digits of "0.0000" tell us that value is not exactly zero, but that the trailing digits are zero when displayed with four digits after the decimal point.
Più risposte (0)
Vedere anche
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!