{"id":359876,"date":"2024-04-01T17:47:52","date_gmt":"2024-04-01T17:47:52","guid":{"rendered":"\/forum\/forums\/topic\/element-30-has-an-undefined-node-number-0\/"},"modified":"2024-04-02T09:42:09","modified_gmt":"2024-04-02T09:42:09","slug":"element-30-has-an-undefined-node-number-0","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/element-30-has-an-undefined-node-number-0\/","title":{"rendered":"Element 30 has an undefined node number 0"},"content":{"rendered":"

Hi. I got an error stated above. There seems to be a problem with my APDL code. I’m trying to use SOLID65 and define stress and strain for every temperature. I have also tried to input “AMESH” above “\/sol” but it didn’t work. The mesh is already a tetrahedron linear mesh. I have tried to supress the APDL code and the analysis worked so, the problem really is on the APDL Code. But, I can’t spot the error. Kindly help me on this. Thank you.
Here’s what the APDL Command contains:<\/p>\n

\/PREP7<\/p>\n

solid65_matid = 9996<\/p>\n

 <\/p>\n

MPTEMP,1,20,200,400,600,800,900<\/p>\n

MPDATA,EX,solid65_matid,1,12379.7911,5463.276115,2636.625645,747.8055365,336.5124914,186.9513841<\/p>\n

MPDATA,PRXY,solid65_matid,1,0.2,0.2,0.2,0.2,0.2,0.2<\/p>\n

 <\/p>\n

TB,MELAS,solid65_matid,10,6<\/p>\n

 <\/p>\n

TBTEMP,20<\/p>\n

TBPT,,0.0004999, 6.1884<\/p>\n

TBPT,,0.0009995, 12.0469<\/p>\n

TBPT,,0.0014989, 16.8393<\/p>\n

TBPT,,0.0019980, 19.8166<\/p>\n

TBPT,,0.0024969, 20.7518<\/p>\n

 <\/p>\n

 <\/p>\n

TBTEMP,200<\/p>\n

TBPT,,0.0010994, 6.0063<\/p>\n

TBPT,,0.0021976, 11.6995<\/p>\n

TBPT,,0.0032946, 16.3635<\/p>\n

TBPT,,0.0043903, 19.2682<\/p>\n

TBPT,,0.0054849, 20.1894<\/p>\n

 <\/p>\n

TBTEMP,400<\/p>\n

TBPT,,0.0019980, 5.2680<\/p>\n

TBPT,,0.0039920, 10.2706<\/p>\n

TBPT,,0.0059821, 14.3777<\/p>\n

TBPT,,0.0079682, 16.9450<\/p>\n

TBPT,,0.0099503, 17.7710<\/p>\n

 <\/p>\n

TBTEMP,600<\/p>\n

TBPT,,0.0049875, 3.7297<\/p>\n

TBPT,,0.0099503, 7.2931<\/p>\n

TBPT,,0.0148886, 10.2398<\/p>\n

TBPT,,0.0198026, 12.1036<\/p>\n

TBPT,,0.0246926, 12.7305<\/p>\n

 <\/p>\n

TBTEMP,800<\/p>\n

TBPT,,0.0049875, 1.6784<\/p>\n

TBPT,,0.0099503, 3.2819<\/p>\n

TBPT,,0.0148886, 4.6079<\/p>\n

TBPT,,0.0198026, 5.4466<\/p>\n

TBPT,,0.0246926, 5.7287<\/p>\n

 <\/p>\n

TBTEMP,900<\/p>\n

TBPT,,0.0049875, 0.9324<\/p>\n

TBPT,,0.0099503, 1.8233<\/p>\n

TBPT,,0.0148886, 2.5599<\/p>\n

TBPT,,0.0198026, 3.0259<\/p>\n

TBPT,,0.0246926, 3.1826<\/p>\n

 <\/p>\n

TB,CONC,solid65_matid,1,9, <\/p>\n

TBTEMP,,<\/p>\n

TBDATA,,0.3,1, 3.59  ,-1,0,0<\/p>\n

 <\/p>\n

!*<\/p>\n

ET,solid65_matid,SOLID65<\/p>\n

KEYOPT,solid65_matid,1,1<\/p>\n

 <\/p>\n

CMSEL,S,NM_Con,ELEM            <\/p>\n

EMODIF,ALL,TYPE,solid65_matid, <\/p>\n

EMODIF,ALL,MAT,solid65_matid,<\/p>\n

 <\/p>\n

ALLSEL,ALL<\/p>\n

\n

\/SOLU<\/p>\n

 <\/p>\n

 <\/p>\n

I’ve tried to separate the code for modifying materials and type. Only modifying the type seems to get the error stated above while modifying the materials continued the analysis but there is a convergence error (stated below is the error) that stopped the analysis.<\/p>\n

“Solution not converged at time 7.2 (load step 1 substep 1).            
  Run terminated.”<\/p>\n

Your answer would be a great help.<\/p>\n<\/div>\n","protected":false},"template":"","class_list":["post-359876","topic","type-topic","status-closed","hentry","topic-tag-ansys-apdl","topic-tag-ansys-mechanical-apdl","topic-tag-ansysapdl","topic-tag-apdl","topic-tag-apdl-code-in-workbench","topic-tag-apdl-coding","topic-tag-apdl-command","topic-tag-convergence","topic-tag-ConvergenceFailure-1","topic-tag-convergence-issue","topic-tag-convergence-problem-1","topic-tag-mesh-elements","topic-tag-mesh-nodes","topic-tag-mesh-problem-1","topic-tag-MeshUpdating-1","topic-tag-meshing","topic-tag-node","topic-tag-nodes-problem-1","topic-tag-quadliteral-mesh-1","topic-tag-Remesh-1","topic-tag-updating-mesh"],"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