Assembly of mass Matrix algorithm
3 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
I have this code, that generate the "Assembly of mass Matrix algorithm" this code deisgned for (3,3) matrix.
The problem is: how can i upgrade this code for (9*9) matrix.
%% assembly of the mass matrix
function M = MassMar2D(p,t)
clear,clc
p = [0 1 2 2 0;
0 0 0 1 1];
t = [1 1 2;
4 2 3;
5 4 4];
np = size(p,2); % number of nodes
nt = size(t,2); % number of elements
M = sparse(5,5); % allocate mass matrix
for K = 1:nt % loop over elements
loc2glb = t(1:3,K) % locate to global map
x = p(1, loc2glb); % node x-coordinates
y = p(2, loc2glb); % y
area = polyarea(x,y); % triangle area
MK = [2 1 1;
1 2 1;
1 1 2]/ 12 * area; % elements mass matrix
M(loc2glb, loc2glb) = M(loc2glb, loc2glb) ...
+ MK; % add element masses to M
end
0 Kommentare
Antworten (0)
Siehe auch
Kategorien
Mehr zu Operating on Diagonal Matrices finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!