Planar

A rotating shell element strikes and rebounds from a rigid wall surface. The plate is modeled with shell elements for viewing in LS-TAURUS. This does not affect the calculation.

*RIGIDWALL_PLANAR
Rotating Shell Strikes Rigid Wall
LS-DYNA Manual Section: *RIGIDWALL_PLANAR

Additional Sections:
*INITIAL_VELOCITY_NODE

Example: Rotating Shell Strikes Rigid Wall

Filename: rigidwall_planar.shell.k

Description:
A rotating shell element strikes and rebounds from a rigid wall surface.
The plate is modeled with shell elements for viewing in LS-TAURUS.
This does not affect the calculation.

Model:
The shell element has an elastic material model with Belytschko-Tsay shell
formulation. The plate measures 10 * 10 * 2 mm3. The plate has an initial
velocity of 100,000 mm/second in negative z-direction and an initial angular
velocity of 100,000 radians/second about the y-axis. The rigid surface is
modeled by an infinite smooth stonewall surface.

Input:
Nodes requiring initial velocity are specified with * INITIAL_VELOCITY_NODE.
The location of the "Stonewall" is in the x-y plane with z= 0
(*RIGIDWALL_PLANAR). The 4 nodes belonging to the shell element are slave nodes
in the stonewall definition. The velocity components of the slave nodes in the
normal direction to the stonewall are reset to zero at the moment of impact.

Reference:
Schweizerhof, K. and Weimar, K.

*CONTROL_ENERGY
*CONTROL_TERMINATION
*DATABASE_BINARY_D3PLOT
*DATABASE_BINARY_D3THDT
*DATABASE_GLSTAT
*DATABASE_HISTORY_NODE
*DATABASE_NODOUT
*DATABASE_RWFORC
*ELEMENT_SHELL
*END
*INITIAL_VELOCITY_NODE
*KEYWORD
*MAT_ELASTIC
*NODE
*PART
*RIGIDWALL_PLANAR
*SECTION_SHELL
*SET_NODE_LIST
*TITLE

  *KEYWORD
  *TITLE
  STONEWALL SURFACE                                                       
  $
  $  LSTC Example
  $
  $  Last Modified: September 23, 1997
  $
  $  Units: ton, mm, s, N, MPa, N-mm
  $
  $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
  $
  $$$$  Control Ouput
  $
  $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
  $
  $...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
  $
  *CONTROL_TERMINATION
  $   endtim    endcyc     dtmin    endneg    endmas
   2.000E-04
  $
  *CONTROL_ENERGY
  $     hgen      rwen    slnten     rylen
           2         2
  $
  $
  *DATABASE_BINARY_D3PLOT
  $       dt      lcdt
   1.000E-05
  $
  *DATABASE_BINARY_D3THDT
  $       dt      lcdt
   2.000E-03
  $
  *DATABASE_GLSTAT
  $       dt
     4.0e-06
  $
  *DATABASE_NODOUT
  $       dt
     4.0e-06
  $
  *DATABASE_HISTORY_NODE
  $        i         i         i         i         i         i         i         i
  $      id1       id2       id3       id4       id5       id6       id7       id8
          12        13       101
  $
  *DATABASE_RWFORC
  $       dt
     4.0e-06
  $
  $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
  $
  $$$$  Rigidwalls
  $
  $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
  $
  $...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
  $
  $$$$  The nodes in set 1 (nodes of the moving shell) are prevented from
  $$$$  penetrating the rigidwall.
  $
  *RIGIDWALL_PLANAR                                                               
  $     nsid    nsidex     boxid
           1
  $
  $       xt        yt        zt        xh        yh        zh      fric
      20.000    20.000     0.000  20.00000  20.00000   100.000
  $
  $
  *SET_NODE_LIST
  $      sid
           1
  $     nid1      nid2      nid3      nid4      nid5      nid6      nid7      nid8
         101       102       103       104         
  $
  $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
  $
  $$$$  Initial Conditions
  $
  $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
  $
  $...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
  $
  $$$$  Nodes of the moving shell are given an initial tran and rot velocity.
  $
  *INITIAL_VELOCITY_NODE
  $      nid        vx        vy        vz       vxe       vye       vze
         101 0.000E+00 0.000E+00-1.000E+05 0.000E+00 1.000E+05 0.000E+00
         102 0.000E+00 0.000E+00-1.000E+05 0.000E+00 1.000E+05 0.000E+00
         103 0.000E+00 0.000E+00-1.000E+05 0.000E+00 1.000E+05 0.000E+00
         104 0.000E+00 0.000E+00-1.000E+05 0.000E+00 1.000E+05 0.000E+00
  $
  $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
  $
  $$$$  Define Parts and Materials
  $
  $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
  $
  $...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
  $
  *PART
  $      pid       sid       mid     eosid      hgid    adpopt
  wall
           1         1         1
  moving-shell
           2         2         2
  $
  $
  *MAT_ELASTIC
  $      mid        ro         e        pr        da        db         k
           1 1.000E-08 1.000E+05 3.000E-01
  $
  *MAT_ELASTIC
  $      mid        ro         e        pr        da        db         k
           2 1.000E-08 1.000E+05 3.000E-01
  $
  $
  *SECTION_SHELL
  $      sid    elform      shrf       nip     propt   qr/irid     icomp
           1         2   0.83333 2.000E+00 3.000E+00 0.000E+00
  $       t1        t2        t3        t4      nloc
   1.000E+00 1.000E+00 1.000E+00 1.000E+00 0.000E+00
  $
  *SECTION_SHELL
  $      sid    elform      shrf       nip     propt   qr/irid     icomp
           2         2   0.83333 2.000E+00 3.000E+00 0.000E+00
  $       t1        t2        t3        t4      nloc
   2.000E+00 2.000E+00 2.000E+00 2.000E+00 0.000E+00
  $
  $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
  $
  $$$$  Define Nodes and Elements
  $
  $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
  $
  $...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
  $
  $
  *END