Hi Everyone
\nI need to export a 96*96 stiffness matrix about a gearbox with screws from ANSYS workbench, but I met some problems.
\nAt first, I defined some Beam contact as screws and gave them two steps Load and Lock in Analysis Setting.
\nAnd I set 16 Remote Points in the middle of the bearings And named them in Command. I need to export the stiffness matrix about these points.
\nThen I added a command in Analysis Setting, but the model stopped from here and met some errors.<\/p>\n
\u00a0*** ERROR ***\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0CP =\u00a0\u00a0842.062\u00a0TIME= 11:13:07
\n\u00a0The analysis type must not be changed after the first load step. For a\u00a0new analysis, enter the FINISH command now and
\nreenter using the\u00a0\u00a0\u00a0\/SOLUTION command.<\/p>\n
There is my APDL code.<\/p>\n
antype,substr<\/p>\n
seopt,,1,2,1,resolve !CHANGES MADE HERE
\n*DIM,node_pos,array,arg1,4
\n*DIM,dof_text_col,CHAR,1,arg1*6
\n*GET,unitsys,ACTIVE,0,UNITS<\/p>\n
*DO,i,1,arg1
\n\u00a0M,M%i%,ALL
\n\u00a0node_pos(i,1)=i
\n\u00a0node_pos(i,2)=NX(M%i%)
\n\u00a0node_pos(i,3)=NY(M%i%)
\n\u00a0node_pos(i,4)=NZ(M%i%)
\n\u00a0dof_text_col(1,6*(i-1)+1)=’N%i%_DX’
\n\u00a0dof_text_col(1,6*(i-1)+2)=’N%i%_DY’
\n\u00a0dof_text_col(1,6*(i-1)+3)=’N%i%_DZ’
\n\u00a0dof_text_col(1,6*(i-1)+4)=’N%i%_RX’
\n\u00a0dof_text_col(1,6*(i-1)+5)=’N%i%_RY’
\n\u00a0dof_text_col(1,6*(i-1)+6)=’N%i%_RZ’
\n*ENDDO<\/p>\n
allsel,all<\/p>\n
I don’t know how to improve my code to export the stiffness matrix.
\nThanks a lot in advance!<\/p>\n
<\/p>\n","protected":false},"template":"","class_list":["post-169698","topic","type-topic","status-closed","hentry","topic-tag-ansys-mechanical","topic-tag-apdl-commands","topic-tag-mechanical-apdl","topic-tag-static-structural","topic-tag-stiffness-matrix"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t