BEM acoustics of a rectangular plate I

This is a first example of a recangular plate subjected to nodal force excitation. *FREQUENCY_DOMAIN_ACOUSTIC_BEM is used for running a vibro-acoustic problem with variational indirect BEM. In the file domgeom.k the domain decomposition can be studied. Example 8.1 from LS-Dyna training class NVH, Fatigue and Frequency Domain Analysis with LS-DYNA by Yun Huang.

*CONTROL_ENERGY
*CONTROL_HOURGLASS
*CONTROL_TERMINATION
*CONTROL_TIMESTEP
*DAMPING_FREQUENCY_RANGE
*DATABASE_BINARY_D3PLOT
*DATABASE_BINARY_D3THDT
*DATABASE_GLSTAT
*DEFINE_CURVE
*ELEMENT_SHELL
*END
*FREQUENCY_DOMAIN_ACOUSTIC_BEM
*KEYWORD  
*LOAD_NODE_POINT
*MAT_ELASTIC
*NODE
*PART
*SECTION_SHELL
*SET_NODE_LIST
*SET_PART_LIST
*TITLE

*KEYWORD  
*TITLE
acoustic field generated by a vibrating plate, by variational indirect bem 
*FREQUENCY_DOMAIN_ACOUSTIC_BEM
  1.210000 340.00000 28.000000 350.00000       162     0.001     0.000 2.0000E-5
         1         1         0         0         4
         2      1000 1.0000E-6         8
                   1
         1         1         0         0
*CONTROL_ENERGY
         2         0         0         0
*CONTROL_HOURGLASS
         0     0.000
*CONTROL_TERMINATION
  1.024000         0     0.000     0.000     0.000
*CONTROL_TIMESTEP
     0.000  0.900000         0     0.000 -1.100E-6         0         0         0
     0.000         0         0
*DATABASE_GLSTAT
 1.0000E-4         0         0         1
*DATABASE_BINARY_D3PLOT
  0.001000         0         0         0         0
         0
*DATABASE_BINARY_D3THDT
  0.001000         0         0         0         0
*LOAD_NODE_POINT
       477         3         1     0.000         0         0         0         0
*PART
plate
         1         1         1         0         0         0         0         0
*SECTION_SHELL
         1        16  1.000000         3         0         0         0         0
  0.001000  0.001000  0.001000  0.001000     0.000     0.000     0.000         0
*MAT_ELASTIC
         1 7800.00002.1000E+11  0.300000     0.000     0.000         0
*DEFINE_CURVE
*SET_NODE_LIST
         1     0.000     0.000     0.000     0.000          
     10000         0         0         0         0         0         0         0
*SET_PART_LIST
         1     0.000     0.000     0.000     0.000          
         1         0         0         0         0         0         0         0
*DAMPING_FREQUENCY_RANGE
  0.010000 30.000000 300.00000         0
*ELEMENT_SHELL
*NODE
*END