拓扑优化169行代码

% AN 169 LINE 3D TOPOLOGY OPITMIZATION CODE BY LIU AND TOVAR (JUL 2013)
function top3d_169(nelx,nely,nelz,volfrac,penal,rmin)
% example (80,40,20,0.15,3,1.5)
% USER-DEFINED LOOP PARAMETERS
maxloop = 200;    % Maximum number of iterations
tolx = 0.01;      % Terminarion criterion
displayflag = 0;  % Display structure flag
% USER-DEFINED MATERIAL PROPERTIES
E0 = 1;