Skip to content. | Skip to navigation

Sections
Personal tools
You are here: Home Intro by J. Reid Two Plates
Valuable Sites

LSTC

Developer of LS-DYNA

LS-DYNA Support Site

Tutorials, HowTos, FAQs ...

 

DYNAlook

LS-DYNA specific conference papers

 

LS-OPT Support Site

Optimization examples, FAQs, HowTos ...

 

Dummy Models

Dummy models for LS-DYNA

LS-PrePost

Online documentation

Top Crunch

Benchmarks in high performance computing

DYNAmore

LS-DYNA distributor, tools, docs

 

 

 

Two Plates

2 Plates joined by a spot-weld. Exercise to define cross sections and prescribed boundary conditions. Download is available in the download section of this document.

Keywords

Keywords

This example has been taken from the introductory class of John D. Reid. Example name: two-plates.k

The used Keywords in alphabetical order.

*CONTACT_AUTOMATIC_SINGLE_SURFACE
*CONTROL_ENERGY
*CONTROL_OUTPUT
*CONTROL_SHELL
*CONTROL_TERMINATION
*DATABASE_BINARY_D3PLOT
*DATABASE_BINARY_D3THDT
*DATABASE_CROSS_SECTION_PLANE
*DATABASE_GLSTAT
*DATABASE_HISTORY_NODE
*DATABASE_MATSUM
*DATABASE_NODOUT
*DATABASE_SECFORC
*DATABASE_SWFORC
*ELEMENT_SHELL
*END
*KEYWORD
*MAT_PLASTIC_KINEMATIC
*NODE
*PART
*SECTION_SHELL
*SET_PART_LIST
*TITLE

Reduced Input

Reduced Input

This example has been taken from the introductory class of John D. Reid. Example name: two-plates.k

*Node and *Element Cards are removed.

  *KEYWORD
  *TITLE
  Two Plates
  $
  $   - two plates, one on top of the other with an overlap
  $   - material is some type of aluminum (I believe)
  $   - contact is defined (auto single surface)
  $   - modified from the plate model of 1995
  $      * refined mesh
  $      * documentation cleaned-up
  $      * re-organized
  $      * non-essentials removed
  $      * 1 cross section defined through each plate
  $      * fully integrated shell formulation (elform = 16)
  $
  $  J.D. Reid    2/1/00
  $
  $  Units: mm, kg, ms, kN, GPa, kN-mm
  $
  $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
  $
  $$$$  Control Ouput
  $
  $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
  $
  $...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
  $
  *CONTROL_TERMINATION
  $   endtim    endcyc     dtmin    endneg    endmas
        8.00
  $
  *CONTROL_ENERGY
  $     hgen      rwen    slnten     rylen
           2         2         2
  $
  *CONTROL_OUTPUT
  $    npopt    neecho    nrefup    iaccop     opifs    ipnint    ikedit
           1         3
  $
  *CONTROL_SHELL
  $   wrpang    itrist     irnxx    istupd    theory       bwc     miter
                                         1
  $
  *DATABASE_BINARY_D3PLOT
  $       dt      lcdt
         0.2
  $
  *DATABASE_BINARY_D3THDT
  $       dt      lcdt
       99999
  $
  *DATABASE_GLSTAT
  $       dt
       0.010
  $
  *DATABASE_MATSUM
  $       dt
       0.010
  $
  *DATABASE_NODOUT
  $       dt
       0.010
  $
  *DATABASE_HISTORY_NODE
  $
  $     1022 - weld location on plate 1
  $     2032 - center, right end (max X) of plate 2
  $
  $      id1       id2       id3       id4       id5       id6       id7       id8
        1022      2032
  $
  *DATABASE_SWFORC
  $       dt
       0.010
  $
  $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
  $
  $$$$  Define Cross Sections
  $
  $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
  $
  $...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
  $
  $$$$  Make two cross section cuts, one through each plate.
  $
  *DATABASE_SECFORC
  $       dt
       0.010
  $
  $
  *DATABASE_CROSS_SECTION_PLANE
  $     psid       xct       yct       zct       xch       ych       zch
           1      28.0       0.0       0.0     100.0       0.0       0.0
  $     xhev      yhev      xhev      lenl      lenm
        28.0       1.0       0.0
  $
  *DATABASE_CROSS_SECTION_PLANE
  $     psid       xct       yct       zct       xch       ych       zch
           2      92.0       0.0       0.0     100.0       0.0       0.0
  $     xhev      yhev      xhev      lenl      lenm
        92.0       1.0       0.0
  $
  $
  *SET_PART_LIST
  $      sid
           1
  $     pid1      pid2      pid3      pid4      pid5      pid6      pid7      pid8
           1
  $
  *SET_PART_LIST
  $      sid
           2
  $     pid1      pid2      pid3      pid4      pid5      pid6      pid7      pid8
           2
  $
  $
  $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
  $
  $$$$  Define Contacts
  $
  $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
  $
  $...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
  $
  *CONTACT_AUTOMATIC_SINGLE_SURFACE
  $     ssid      msid     sstyp     mstyp    sboxid    mboxid       spr       mpr
           0
  $
  $       fs        fd        dc        vc       vdc    penchk        bt        dt
  
  $
  $      sfs       sfm       sst       mst      sfst      sfmt       fsf       vsf
  
  $
  $
  $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
  $
  $$$$  Define Parts and Materials
  $
  $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
  $
  $...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
  $
  *PART
  $      pid       sid       mid     eosid      hgid      grav    adpopt      tmid
  plate_1 
           1         1         1
  plate_2
           2         1         1
  $
  *MAT_PLASTIC_KINEMATIC
  $      mid        ro         e        pr      sigy      etan      beta
           1   2.70e-6      68.9     0.330     0.286   0.00689
  $
  $      src       srp        fs
  
  $
  $
  *SECTION_SHELL
  $ 
  $      sid    elform      shrf       nip     propt   qr/irid     icomp
           1        16                 5.0
  $
  $       t1        t2        t3        t4      nloc
         2.0       2.0       2.0       2.0
  $
  $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
  $
  $$$$  Define Nodes and Elements
  $
  $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
  $
  $...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
  $
  *END

Figures

Figures

This example has been taken from the introductory class of John D. Reid. Example name: two-plates.k

image01.gif

image02.gif

Animated Result

Animated Result

This example has been taken from the introductory class of John D. Reid. Example name: two-plates.k

Result

Download

Download

This example has been taken from the introductory class of John D. Reid. Example name: two-plates.k