# Pipe — Welcome to LS-DYNA Examples

Problem Description: A pipe consisting of an elastoplastic and a rigid part is given an initial angular velocity. It crashes into another elastoplastic pipe and both are locally crushed.

## Keywords

```*CONTACT_AUTOMATIC_SINGLE_SURFACE
*CONTACT_FORCE_TRANSDUCER_PENALTY
*CONTROL_ENERGY
*CONTROL_OUTPUT
*CONTROL_SHELL
*CONTROL_TERMINATION
*DATABASE_BINARY_D3PLOT
*DATABASE_BINARY_D3THDT
*DATABASE_EXTENT_BINARY
*DATABASE_GLSTAT
*DATABASE_JNTFORC
*DATABASE_MATSUM
*DATABASE_RBDOUT
*DATABASE_RCFORC
*ELEMENT_SHELL
*ELEMENT_SOLID
*END
*INITIAL_VELOCITY_GENERATION
*KEYWORD
*MAT_PLASTIC_KINEMATIC
*MAT_RIGID
*NODE
*PART
*SECTION_SHELL
*SECTION_SOLID
*SET_PART_LIST
*TITLE```

## Reduced Input

```  *KEYWORD
*TITLE
Pipe on Pipe Impact
\$
\$  J.D. Reid   7/13/00 - original model from Brian Coon 3/25/00
\$
\$  Units: mm, kg, ms, kN, GPa, kN-mm
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\$
\$
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\$
\$...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
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\$
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\$
\$\$\$\$  Joints
\$
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\$
\$...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
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\$
\$
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\$
\$\$\$\$  Control Ouput
\$
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\$
\$...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
\$
*CONTROL_TERMINATION
\$   endtim    endcyc     dtmin    endeng    endmas
20.0
\$
*CONTROL_ENERGY
\$     hgen      rwen    slnten     rylen
2         2         2
\$
*CONTROL_OUTPUT
\$    npopt    neecho    nrefup    iaccop     opifs    ipnint    ikedit
1         3
\$
*CONTROL_SHELL
\$   wrpang    itrist     irnxx    istupd    theory       bwc     miter
1
\$
\$
*DATABASE_BINARY_D3PLOT
\$       dt      lcdt
1.00
\$
*DATABASE_EXTENT_BINARY
\$    neiph     neips    maxint    strflg    sigflg    epsflg    rltflg    engflg

\$   cmpflg    ieverp    beamip
1
\$
*DATABASE_BINARY_D3THDT
\$       dt      lcdt
999999
\$
\$
*DATABASE_GLSTAT
\$       dt
0.10
\$
*DATABASE_JNTFORC
\$       dt
0.10
\$
*DATABASE_MATSUM
\$       dt
0.10
\$
*DATABASE_RBDOUT
\$       dt
0.10
\$
*DATABASE_RCFORC
\$       dt
0.10
\$
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\$
\$\$\$\$  Define Contacts - Sliding Interfaces
\$
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\$
\$...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
\$
\$\$\$  Force Transducer - contact forces on deformable pipe: part 1
\$
*CONTACT_FORCE_TRANSDUCER_PENALTY
\$     ssid      msid     sstyp     mstyp
1                   3

\$
*CONTACT_AUTOMATIC_SINGLE_SURFACE
\$     ssid      msid     sstyp     mstyp    sboxid    mboxid       spr       mpr
3                   2
\$
\$       fs        fd        dc        vc       vdc    penchk        bt        dt
0.30      0.30
\$
\$      sfs       sfm       sst       mst      sfst      sfmt       fsf       vsf

\$
\$
*SET_PART_LIST
\$     psid
3
\$     pid1      pid2      pid3      pid4      pid5      pid6      pid7      pid8
1         3
\$
\$
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\$
\$\$\$\$  Initial Conditions
\$
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\$
\$...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
\$
*INITIAL_VELOCITY_GENERATION
\$      sid      ntyp     omega        vx        vy        vz
5         1    -0.082
\$
\$       xc        yc        zc        nx        ny        nz     phase
-78.50   -610.13      5.69       1.0       0.0       0.0         0
\$
\$
*SET_PART_LIST
\$     psid
5
\$     pid1      pid2      pid3      pid4      pid5      pid6      pid7      pid8
1         2
\$
\$
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\$
\$\$\$\$  Define Pipe Parts and Materials
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\$
\$...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
\$
*PART
\$      pid       sid       mid     eosid      hgid      grav    adpopt
Deformable-Pipe
1         1         1
Pipe-End
2         2         2
Rigid-Pipe
3         2         1
\$
\$
\$\$\$\$  Materials
\$
*MAT_PLASTIC_KINEMATIC
\$      mid        ro         e        pr      sigy      etan      beta
1   7.86e-6     200.0      0.30     0.250   0.00689
\$
\$      src       srp        fs

\$
\$
*MAT_RIGID
\$      mid        ro         e        pr        da        db         k
2   7.86e-6     200.0      0.30
\$      cmo      con1      con2

\$      lco        a2        a3        v1        v2        v3

\$
\$
\$\$\$\$  Sections
\$
*SECTION_SHELL
\$      sid    elform      shrf       nip     propt   qr/irid     icomp
1         2                   5
\$
\$       t1        t2        t3        t4      nloc
11.0      11.0      11.0      11.0
\$
*SECTION_SHELL
\$      sid    elform      shrf       nip     propt   qr/irid     icomp
2         2                   3
\$
11.0      11.0      11.0      11.0
\$
\$
\$
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\$
\$\$\$\$  Define Bracket Parts and Materials
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\$
\$...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
\$
*PART
\$      pid       sid       mid     eosid      hgid      grav    adpopt
Bracket
4         4         4
\$
\$
*MAT_RIGID
\$      mid        ro         e        pr        da        db         k
4   7.86e-6     200.0      0.30
\$      cmo      con1      con2
1         7         7
\$      lco        a2        a3        v1        v2        v3

\$
\$
*SECTION_SOLID
\$      sid    elform
4
\$
\$
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\$
\$\$\$\$  Define Nodes and Elements
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\$
\$...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
\$
*END```