*KEYWORD
$ new notes:
$ 196 and 93 have a default damping
$ 196 damping can be turned off by setting D=1.e-9
$ 93 damping seemingly can't be turned off, even by setting D=1.e-9 in mat 74
$
$
$ old notes:
$ timestep for elastic mat 74,196 is smaller than for mat 66 if zero length
$ timestep for elastic mat 74,196 is same as mat 66 if finite length
$ Also 196 response is damped thru 971 R3.2.1 but not in 971 R4.2
$
*database_history_beam
$66,74,196
93,74,196
*PART

66,21,66

196,21,196

74,21,74

93,21,93
*MAT_LINEAR_ELASTIC_DISCRETE_BEAM
$$ not used
$ mat 66
$#     mid        ro       tkr       tks       tkt       rkr       rks       rkt
        666.50000E-5 1.5000000  
$#     tdr       tds       tdt       rdr       rds       rdt   

$#     for       fos       fot       mor       mos       mot   

*MAT_ELASTIC_SPRING_DISCRETE_BEAM
$ mat 74
$#     mid        ro         k        f0         d       cdf       tdf   
        746.50000E-5 1.5000000          1.00000E-9
$        746.50000E-5 1.5000000 
$#   flcid     hlcid        c1        c2       dle     glcid     

*MAT_GENERAL_SPRING_DISCRETE_BEAM
$ mat 196
$     MID        RO
$#     mid        ro  
       1966.50000E-5
$#     dof      type         k         d       cdf       tdf   
         1         0 1.50000001.00000E-9
$         1         0 1.5000000
$#   flcid     hlcid        c1        c2       dle     glcid     
         0         0     0.000     0.000     0.000         0
*MAT_ELASTIC_6DOF_SPRING_DISCRETE_BEAM
$ mat 93
93, 6.5000E-5, 74
$93, 6.5000E-5, 74,74,74
*TITLE
$ now units are ton,mm,s,N
$ **********************CONTROL CARDS**************************
*CONTROL_TERMINATION
$   endtim    endcyc     dtmin    endeng    endmas
1.0000
*CONTROL_TIMESTEP
$   dtinit    tssfac      isdo    tslimt     dt2ms      lctm     erode     ms1st
0.0,0.9
$   dt2msf   dt2mslc
0.0
*CONTROL_ENERGY
$     hgen      rwen    slnten     rylen
2, 2, 2, 2
$ ****************************OUTPUT CONTROL********************************   
*DATABASE_BINARY_D3PLOT
0.0010
*DATABASE_BINARY_D3THDT
0.0010
*DATABASE_ELOUT
1.0E-5
*DATABASE_GLSTAT              
4.000E-04
*DATABASE_NODOUT
0.01
*database_history_node
1,11,21
*SECTION_BEAM
$   SECID    ELFORM      SHRF   QR/IRID       CST     SCOOR       NSM
       21         6                                     2.0
$     VOL      INER       CID        CA    OFFSET     RRON     SRCON     TRCON
      1.0       0.0       0.0       0.0       0.0       0.0       0.0       0.0
*ELEMENT_BEAM
$   EID     PID      N1      N2      N3     RT1     RR1     RT2     RR2   LOCAL
$     66      66       1       2               0       0       0       0       1
     93      93       1       2               0       0       0       0       1
    196     196      11      12               0       0       0       0       1
     74      74      21      22               0       0       0       0       1
$ **********************BASE EXCITATION**************************   
*LOAD_BODY_Z
1,9810
*DEFINE_CURVE
1
0,1
10,1
$ **********************NODE CONSTRAINTS**************************   
*BOUNDARY_SPC_NODE
1,0,1,1,0,1,1,1
2,0,1,1,1,1,1,1
11,0,1,1,0,1,1,1
12,0,1,1,1,1,1,1
21,0,1,1,0,1,1,1
22,0,1,1,1,1,1,1
$ **********************CONNECTOR NODES**************************
*NODE
       1,              0.,              0.,              0.
       2,              0.,              0.,              1.
      11,              0.,              0.,              0.
      12,              0.,              0.,              1.
      21,              0.,              0.,              0.
      22,              0.,              0.,              1.
$ **********************DEFINE MASS ELEMENT IN DECK**************************
*ELEMENT_MASS
 1, 1, 0.001 
 2, 11, 0.001 
 3, 21, 0.001 
$ **********************DEFINE MASS ELEMENT CABINET**************************
*END