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Publication Number: FHWA-HRT-04-095
Date: November 2004

Manual for LS-DYNA Soil Material Model 147

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APPENDIX B. EXAMPLES OF INPUT

INPUT FOR SINGLE-ELEMENT SIMULATION OF 3.4-MPA TRIAXIAL COMPRESSION TEST

*KEYWORD
*TITLE
TRIAXIAL COMPRESS @ 3.4MPa for FHWA soil model

$
$ Check out/debug model with research plan changes
$ Look at effects of changing Ksk and pwd2
$ Look at effects of changing moisture content with Ksk and pwd2 fixed
$ Use Nebraska soil parameters
$
$ Last Modified: March 27, 2002 by Brett Lewis
$
$ Units: kg, mm, msecs
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$$$$ Control Output
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
*CONTROL_TERMINATION
$ endtim endcyc dtmin endneg endmas
100.00
$
*CONTROL_TIMESTEP
$     dtinit      scft      isdo      tslimt      dtms      lctm      erode      ms1st
              3
*DEFINE_CURVE
$     lcid      sidr      scla      sclo      offa      offo
     3
$     abscissa      ordinate
     0.000      1.54E-04
     10.0000      1.54E-04
     50.000      1.54E-03
     1000000.      1.54E-03
$
*CONTROL_ENERGY
$      hgen      rwen      slnten      rylen
     2      1
$
*CONTROL_OUTPUT
$      npopt      neecho      nrefup      iaccop      opifs      ipnint      ikedit
     0      3
$
$
*DATABASE_BINARY_D3PLOT
$      dt      lcdt
0.5000
$ 1.0000
$
*DATABASE_EXTENT_BINARY

$     neiph     neips     maxint     strflg     sigflg     epsflg     rltflg     engflg $     cmpflg     ieverp     beamip
        0
$
*DATABASE_BINARY_D3THDT
$         dt         lcdt
    999999
$
*DATABASE_GLSTAT
$    dtf
    .500000
$
*DATABASE_MATSUM
$     dt
.500000
$
$
$
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$$$$ Define Parts and Materials
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$$$ Part     1     solid: SINGLE ELEMENT
$
*PART
$     pid     sid     mid     eosid     hgid     adpopt
cube - Material 147 HRCL soil
    1     1     1
$$$$ materials
$.   ..>.   ...1.   ...>.   ...2.   ...>.   ...3.   ..>.   ...4.   ...>.   ...5.   ...>.   ...6.   ...>.   ...7.   ..>.   ...8
*MAT_147

$ mid ro NPLOT SPGRAV RHOWAT VN GAMMAR ITERMAX
  1 2.350E-6 3 2.79 1.0E-6 1.1 000. 10
$ K G PHIMAX AHYP COH ECCEN AN ET
  .465000 .186000 1.1 1.0E-7 1.0E-6 0.7 0.0 10.
$ MCONT PWD1 PWKSK PWD2 PHIRES DINT VDFM DAMLEV
  0.034 000.00 0.0E-05 0.0 0.0 .00005 1.0E-09 .80

$ EPSMAX
    .030
*NODE
$   ...>.   ...1.   ..>.   ...2.   ..>.   ...3.   ..>.   ...4.   ..>.   ...5.   ..>.   ...6.   ...>.   ...7.   ..>.   ...8

$ node x y z tc rc
1 0.000000E+00 0.000000E+00 0.000000E+00 7 7
2 1.0000000000 0.000000E+00 0.000000E+00 3 7
3 1.0000000000 1.000000E+00 0.000000E+00 3 7
4 0.0000000000 1.000000E+00 0.000000E+00 3 7
5 0.0000000000 0.000000E+00 1.000000E+00 0 7
6 1.0000000000 0.000000E+00 1.000000E+00 0 7
7 1.0000000000 1.000000E+00 1.000000E+00 0 7
8 0.0000000000 1.000000E+00 1.000000E+00 0 7

$$$$ sections
$

 

*SECTION_SOLID
$         sid         elform
        1         0
$
$$$$$$$$$ elements solid
*ELEMENT_SOLID
$.     ..>.     ...1.     ...>.     ...2.     ...>.     ...3.     ..>.     ...4.     ...>.     ...5.     ..>.     ...6.     ...>.     ...7.     ...>.     ...8

$ eid pid n1 n2 n3 n4 n5 n6 n7 n8
  1 1 1 2 3 4 5 6 7 8

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$$$$ Loading - PRESCRIBED_MOTION_RIGID
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
*BOUNDARY_PRESCRIBED_MOTION_NODE

$       nid dof vad lcid sf vid
5 3 0 1 1.000E+00  
6 3 0 1 1.000E+00  
7 3 0 1 1.000E+00  
8 3 0 1 1.000E+00  

$
*DEFINE_CURVE
$       lcid       sidr       scla       sclo       offa       offo
            1

$ abscissa ordinate
  10.0000 -4.94E-04
  25.0000 -4.94E-04
  50.0000 -20.00E-04
  500.00000 -40.00E-04

$$$$$$$$$$$$$$$$$$$$$$$$$$$
$ PRESSURE LOADING ON SIDES
*LOAD_SEGMENT

$.     .>.     ...1.      ...>.     ...2.      ...>..     ..3.      ...>..     ..4.      .>..     ..5.      ..>..     ..6.      ..>.     ...7.      ...>.     ...8
2 0.0 0.0 1 2 6 5  
2 0.0 0.0 2 3 7 6  
2 0.0 0.0 3 4 8 7  
2 0.0 0.0 4 1 5 8  

*DEFINE_CURVE
$       lcid       sidr       scla       sclo       offa       offo
      2

$

abscissa
0.000
10.0000
500.00000

ordinate
.000000000
.003450000
.003450000

*END

FHWA MATERIAL MODEL INPUT FOR DIRECT SHEAR EXAMPLE

$$$$ Input for FHWA soil Units mm, kg, msecs
$
*MAT_FHWA_SOIL

$ mid ro NPLOT SPGRAV RHOWAT Vn GAMMAR ITERMAX
  1 2.350E-6 3 2.79 1.0E-6 1.1 0000. 10
$ K G PHIMAX AHYP COH ECCEN An ET 
  .003250 .001300 1.1 1.0E-7 6.2E-6 0.7 0.0 0.
$ MCONT PWD1 PWKSK PWD2 PHIRES DINT VDFM DAMLEV
  0.034 000.00 0.0E-05 0.0 .001 1.0E-5 6.0E-08 .99000
$ EPSPRMAX              
  .8              


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