Reduced Input
*Node and *Element Cards are removed.
*KEYWORD
*TITLE
Two Spotwelded Plates Pulled Apart with a Specified Velocity
$
$ LSTC Example
$
$ Last Modified: September 4, 1997
$
$ Model initially changed from old lstc example to partially reflect paper
$ by Matzenmiller, et al (ls-dyna conf 9/94) - Major differences include the
$ material and element formulation, units, and velocity loading.
$
$
$ Units: mm, kg, ms, kN, GPa, kN-mm
$
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$$$$ Control Ouput
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*CONTROL_TERMINATION
$ endtim endcyc dtmin endneg endmas
8.00
$
*CONTROL_ENERGY
$ hgen rwen slnten rylen
2 2 2
$
*CONTROL_OUTPUT
$ npopt neecho nrefup iaccop opifs ipnint ikedit
1 3
$
*CONTROL_SHELL
$ wrpang itrist irnxx istupd theory bwc miter
1
$
$
*DATABASE_BINARY_D3PLOT
$ dt lcdt
0.2
$
*DATABASE_BINARY_D3THDT
$ dt lcdt
99999
$
*DATABASE_GLSTAT
$ dt
0.010
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*DATABASE_MATSUM
$ dt
0.010
$
*DATABASE_NODFOR
$ dt
0.010
$
*DATABASE_NODAL_FORCE_GROUP
$ nsid cid
201
$
*SET_NODE_LIST
$ sid
201
$ nid1 nid2 nid3 nid4 nid5 nid6 nid7 nid8
213 123
$
*DATABASE_NODOUT
$ dt
0.010
$
*DATABASE_HISTORY_NODE
$ id1 id2 id3 id4 id5 id6 id7 id8
123 233
$
*DATABASE_SECFORC
$ dt
0.010
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*DATABASE_SWFORC
$ dt
0.010
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$$$$ Constrain the Plates Together
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$
$$$ Three spotwelds across the plate, with failure defined.
$
*CONSTRAINED_SPOTWELD
$ n1 n2 sn sf n m
212 122 7.854 4.534 2.0 2.0
213 123 7.854 4.534 2.0 2.0
214 124 7.854 4.534 2.0 2.0
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$$$$ Boundary Motion Conditions
$
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$
$$$ Prescribe the velocity of the nodes on one end of the plate.
$
*BOUNDARY_PRESCRIBED_MOTION_SET
$ nid dof vad lcid sf vid
1 1 0 1 1.0 0
$
*DEFINE_CURVE
$ lcid sidr scla sclo offa offo
1
$ abscissa ordinate
0.0000 0.0
10.0000 0.3048
20.0000 0.3048
$
*SET_NODE_LIST
$ sid
1
$ nid1 nid2 nid3 nid4 nid5 nid6 nid7 nid8
231 232 233 234 235
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
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$$$$ Define Contacts
$
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$
$...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
$
*CONTACT_AUTOMATIC_SINGLE_SURFACE
$ ssid msid sstyp mstyp sboxid mboxid spr mpr
0
$ fs fd dc vc vdc penchk bt dt
$ sfs sfm sst mst sfst sfmt fsf vsf
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
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$$$$ Define Parts and Materials
$
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$
*PART
$ pid sid mid eosid hgid adpopt
plate_1
1 1 1
plate_2
2 1 1
$
$
*MAT_PLASTIC_KINEMATIC
$ mid ro e pr sigy etan beta
1 2.70e-6 68.9 0.330 0.286 0.00689
$ src srp fs
$
$$$$ Element formulation 6 (S/R Hughes-Liu) is used to prevent hourglassing.
$
*SECTION_SHELL
$ sid elform shrf nip propt qr/irid icomp
1 6 3
$ t1 t2 t3 t4 nloc
2.0 2.0 2.0 2.0
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$$$$ Define Cross Sections
$
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$
$$$ Two cross sections defined - one through each plate. Two different
$ methods for defining the cross sections are used.
$
$...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
$
$$$ cross section through plate 1
$
*DATABASE_CROSS_SECTION_PLANE
$ psid xct yct zct xch ych zch
0 30.0 0.0 0.0 31.0 0.0 0.0
$ xhev yhev xhev lenl lenm
30.0 1.0 0.0
$
$$$ cross section through plate 2
$
*DATABASE_CROSS_SECTION_SET
$ nsid hsid bsid ssid tsid dsid
4 2
$
*SET_NODE_LIST
$ sid da1 da2 da3 da4
4
$ nid1 nid2 nid3 nid4 nid5 nid6 nid7 nid8
226 227 228 229 230
$
*SET_SHELL_LIST
$ sid da1 da2 da3 da4
2
$ eid1 eid2 eid3 eid4 eid5 eid6 eid7 eid8
221 222 223 224
$
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
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$$$$ Define Nodes and Elements
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$
*END