Nodal/Resultant force FRF

This example shows a beam model with two layers of solids. *FREQUENCY_DOMAIN_FRF is used to define z-acceleration to the left end and z-direction nodal force output. With *DATABASE_NODAL_FORCE_GROUP resultant force output is defined. Example 4.4 from LS-Dyna training class NVH, Fatigue and Frequency Domain Analysis with LS-DYNA by Yun Huang.

*BOUNDARY_SPC_SET
*CONTROL_IMPLICIT_EIGENVALUE
*CONTROL_IMPLICIT_GENERAL
*CONTROL_IMPLICIT_SOLUTION
*CONTROL_TERMINATION
*DATABASE_BINARY_D3PLOT
*DATABASE_NODAL_FORCE_GROUP
*ELEMENT_SOLID
*END
*FREQUENCY_DOMAIN_FRF
*KEYWORD  
*MAT_ELASTIC
*NODE
*PART
*SECTION_SOLID
*SET_NODE_LIST
*TITLE

*KEYWORD  
*TITLE
FRF with resultant force
*FREQUENCY_DOMAIN_FRF
                             3         1         0    2000.0
      0.01
         1         1         3         3
       1.0     1000.      1000 
*DATABASE_NODAL_FORCE_GROUP
         1         0
*CONTROL_IMPLICIT_GENERAL
         1  1.000000         0         0         0         0         0         0
*CONTROL_IMPLICIT_SOLUTION
         1         0         0     0.000     0.000     0.000     0.000     0.000
         0         0         0         0         0         0
         0         0     0.000         1         2
*CONTROL_IMPLICIT_EIGENVALUE
        20        .0
                                                 1
*CONTROL_TERMINATION
  1.000000         0     0.000     0.000     0.000
*DATABASE_BINARY_D3PLOT
  1.000000         0         0         0         0
         0
*SET_NODE_LIST
         1     0.000     0.000     0.000     0.000
        30        31        32        33        38        39       222       223
       226       227       230       232       234       236       238       240
       242       244
*SET_NODE_LIST
         2     0.000     0.000     0.000     0.000
       204       205       206       207       212       213       534       537
       538       541       543       545       547       549       551       553
       555       557
*SET_NODE_LIST
         3
       538       541       545       549       553       557
*BOUNDARY_SPC_SET
         1         0         1         1         1         1         1         1
*MAT_ELASTIC
         1 7.8000E-9 2.0700E+5  0.280000     0.000     0.000         0
*PART
beam
         2         1         1         0         0         0         0         0
*SECTION_SOLID
         1        18
*ELEMENT_SOLID
*NODE
*END