Conversion NASTRAN to ABAQUS
Conversion NASTRAN to ABAQUS
(OP)
Hello everyone,
I am trying to perform a simple frequency response analysis using ABAQUS - using a 2-DOF model
Here is the NASTRAN inputdeck:
what I did so far consisted in the conversion of the bulk data from NASTRAN to ABAQUS:
Does anybody know how to set the dynamical force? how to request the FR-solution until 20 Hz?
Thank you very much
I am trying to perform a simple frequency response analysis using ABAQUS - using a 2-DOF model
Here is the NASTRAN inputdeck:
CODE -->
ID FRF_TWO_DOF SOL 111 CEND TITLE = TWO-DOF SYSTEM SUBTITLE = MODAL FREQUENCY RESPONSE LABEL = NASTRAN EXAMPLE $ SPC = 996 METHOD = 10 DLOAD = 999 FREQ = 888 SDAMPING = 777 $ SET 11 = 1,2 OFREQ = ALL $ SUBCASE 1 DISPLACEMENT(PHASE,PUNCH) = 11 $ $ BEGIN BULK $ RLOAD1 999 997 901 DAREA 997 2 2 20.0 TABLED1 901 +TAB901 +TAB901 0.0 1.0 10.0 1.0 ENDT $ FREQ1 888 2. 0.10 80 $ $ TABDMP1 777 CRIT +TABD7 +TABD7 0. 0.05 100. 0.05 ENDT $ EIGRL 10 -0.1 20. 0 $ $Bulk data GRID 1 0. 2. 0. GRID 2 0. 1. 0. GRID 3 0. 0. 0. GRDSET 13456 CONM2 1 1 0.1 CONM2 2 2 10.0 CELAS2 11 100.0 1 2 2 2 CELAS2 12 1.0E4 2 2 3 2 SPC 996 3 2 $ PARAM,POST,-1 ENDDATA
what I did so far consisted in the conversion of the bulk data from NASTRAN to ABAQUS:
CODE
*HEADING
*NODE
1, 0., 2., 0.
2, 0., 1., 0.
3, 0., 0., 0.
*SPRING, ELSET=P1;Default PELAS_N Property
2, 2
100.,
*ELEMENT, TYPE=SPRING2, ELSET=P1;Default PELAS_N Property
11, 1, 2
*SPRING, ELSET=P2;Default PELAS_N Property
2, 2
10000.,
*ELEMENT, TYPE=SPRING2, ELSET=P2;Default PELAS_N Property
12, 2, 3
*MASS, ELSET=MASS_00000001
0.1,
*ELEMENT, TYPE=MASS, ELSET=MASS_00000001
1, 1
*MASS, ELSET=MASS_00000002
10.,
*ELEMENT, TYPE=MASS, ELSET=MASS_00000002
2, 2
*NSET, NSET=Anonymous Header SET
1, 2
*BOUNDARY, TYPE=DISPLACEMENT
3, 2, , 0. Does anybody know how to set the dynamical force? how to request the FR-solution until 20 Hz?
Thank you very much




