Reduced Input

*KEYWORD  
*TITLE
Acoustic analysis of a simplified compartment model by FEM
*FREQUENCY_DOMAIN_ACOUSTIC_FEM
1.2300E-12   340000.       10.      500.       491                        2.e-11
         3         0
         1         2        11         5         3         2        1.
       200         1
*DATABASE_FREQUENCY_BINARY_D3ACS
         1
*CONTROL_TERMINATION
  0.187970         0     0.000     0.000 50.000000
*CONTROL_TIMESTEP
     0.000  0.800000
     0.000         0         0
*DATABASE_BINARY_D3DUMP
 10000.000
*DATABASE_BINARY_D3PLOT
  0.001000
         0
*DATABASE_BINARY_D3THDT
 5.0000E-4
*DATABASE_BINARY_RUNRSF
 5000.0000
*PART
body = Al 3mm thick 
         1         1         1
*SECTION_SHELL
         1         2
  3.000000  3.000000  3.000000  3.000000
*MAT_RIGID
         1 2.7000E-9 72000.000  0.300000     0.000     0.000     0.000          
  1.000000         7         7
     0.000     0.000     0.000     0.000     0.000     0.000
*PART
acoustic medium                                                                 
         3         3         3
*SECTION_SOLID
         3         2
*MAT_ELASTIC_FLUID
         3  1.220000     0.000     0.000     0.000     0.000 141.03000
     0.000     0.000
*ELEMENT_SOLID
*NODE
*SET_NODE_LIST
       200     0.000     0.000     0.000     0.000
    110607
*DEFINE_CURVE
         2         0     0.000     0.000     0.000     0.000         0
               0.000               0.000
        1000.0000000               0.000
*DEFINE_CURVE
         3         0     0.000     0.000     0.000     0.000         0
               0.000           7.0000000
        1000.0000000           7.0000000
*SET_SEGMENT
*END
*ELEMENT_SHELL