A symmetric short crush tube is impacted by a moving wall. Corner elements are removed on desired initial crush area. See file symtube.k for exploitation of symmetry.
*BOUNDARY_SPC_NODE *CONTACT_AUTOMATIC_SINGLE_SURFACE *CONTROL_ENERGY *CONTROL_TERMINATION *DATABASE_BINARY_D3PLOT *DATABASE_BINARY_D3THDT *DATABASE_EXTENT_BINARY *DATABASE_GLSTAT *DATABASE_HISTORY_NODE *DATABASE_MATSUM *DATABASE_NODOUT *DATABASE_RWFORC *DATABASE_SLEOUT *ELEMENT_SHELL *END *KEYWORD *MAT_PIECEWISE_LINEAR_PLASTICITY *NODE *PART *RIGIDWALL_PLANAR_MOVING_FORCES *SECTION_SHELL *TITLE
*KEYWORD
*TITLE
Short Crush Tube Impacted by a Moving Wall
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$ J.D. Reid 2/14/95, 1/17/96, 2/15/00
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$ Units: mm, kg, ms, kN, GPa, kN-mm
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$$$$ Control Ouput
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$...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
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*CONTROL_TERMINATION
$ endtim endcyc dtmin endeng endmas
20.00
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*CONTROL_ENERGY
$ hgen rwen slnten rylen
2 2
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*DATABASE_BINARY_D3PLOT
$ dt lcdt
1.0
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*DATABASE_EXTENT_BINARY
$ neiph neips maxint strflg sigflg epsflg rltflg engflg
$ cmpflg ieverp beamip
1
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*DATABASE_BINARY_D3THDT
$ dt lcdt
999999
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*DATABASE_GLSTAT
$ dt
0.1
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*DATABASE_MATSUM
$ dt
0.1
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*DATABASE_NODOUT
$ dt
0.1
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*DATABASE_HISTORY_NODE
$ id1 id2 id3
99999 259 7
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*DATABASE_RWFORC
$ dt
0.1
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*DATABASE_SLEOUT
$ dt
0.1
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$$$$ Define Contacts - Sliding Interfaces
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$...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
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*CONTACT_AUTOMATIC_SINGLE_SURFACE
$ ssid msid sstyp mstyp sboxid mboxid spr mpr
0
$ Equating ssid to zero means that all segments are included in the contact
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$ fs fd dc vc vdc penchk bt dt
0.08 0.08
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$ sfs sfm sst mst sfst sfmt fsf vsf
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$$$$ Define Stone Walls
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$...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
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*RIGIDWALL_PLANAR_MOVING_FORCES
$ nsid nsidex boxid
0 0 0
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$ xt yt zt xh yh zh fric
0.0 0.0 274.0 0.0 0.0 0.0 1.0
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$ sw mass sw vel
800.000 8.94
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$ soft ssid node1 node2 node3 node4
0 0 99999
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$$$$ Define Materials and Parts
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$...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
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*PART
$ pid sid mid eosid hgid grav adpopt tmid
corner 1
1 1 1
corner 2
2 1 1
corner 3
3 1 1
corner 4
4 1 1
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*MAT_PIECEWISE_LINEAR_PLASTICITY
$ mid ro e pr sigy etan eppf tdel
1 7.830E-06 200.0 0.3 0.366 0.750
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$ C p lcss lcsr
40 5
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$ Values for plastic stress/strain curves
0.000 0.025 0.049 0.072 0.095 0.118 0.140 0.182
0.366 0.424 0.476 0.507 0.529 0.546 0.559 0.584
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*SECTION_SHELL
$ sid elform shrf nip propt qr/irid icomp
1 2 3.0000
$ t1 t2 t3 t4 nloc
2.0 2.0 2.0 2.0
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$$$$ Define Constraints, Boundary & Initial Conditions
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$...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
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$$$$ Nodal single point constraints
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*BOUNDARY_SPC_NODE
$ nid cid x y z rx ry rz
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*END
