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A center of mass is constrained to slide along a local coordinate system. The termination time is 0.010 seconds.
Introduction
*MAT_RIGID
Rigid Sliding Block in Local Coordinate System
LS-DYNA Manual Section: *MAT_RIGID
Additional Sections:
*DEFINE_COORDINATE_VECTOR
*LOAD_SEGMENT
Example: Rigid Sliding Block in Local Coordinate System
Filename: mat_rigid.block-slide.k
Description:
A center of mass is constrained to slide along a local coordinate system.
The termination time is 0.010 seconds.
Model:
The material description references a local coordinate system to constrain the
rigid block. The rigid block is free to translate along the local z axis.
Input:
The material definition is a rigid material (*MAT_RIGID). The material
specifies the use of a local coordinate system, the local coordinate constraint
value of 100111 (tx ty tz rx ry rz), and the local coordinate system for
output. The local coordinate system specifies that the local origin is the
global origin, the local x-axis point is (1.0,0.0,1.0) and the local y-axis
point is (0.0,0.0,1.0) (*DEFINE_COORDINATE_VECTOR). A shell element is defined
in order to control the time-step.
Results:
The block slides along the local coordinate system.
Keywords
*CONTROL_TERMINATION
*DATABASE_BINARY_D3PLOT
*DEFINE_COORDINATE_VECTOR
*DEFINE_CURVE
*ELEMENT_SHELL
*ELEMENT_SOLID
*END
*KEYWORD
*LOAD_SEGMENT
*MAT_ELASTIC
*MAT_RIGID
*NODE
*PART
*SECTION_SHELL
*SECTION_SOLID
*TITLE
*KEYWORD
*TITLE
Sliding Block
$
$ LSTC Example
$
$ Last Modified: September 18, 1997
$
$ Units: lbf-s2/in, in, s, lbf, psi, lbf-in
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
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$$$$ Control Ouput
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
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$...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
$
*CONTROL_TERMINATION
$ endtim endcyc dtmin endneg endmas
1.000E-02
$
*DATABASE_BINARY_D3PLOT
$ dt lcdt
5.000E-04
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$$$$ Define Parts and Materials
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$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
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$...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
$
*PART
$ pid sid mid eosid hgid adpopt
block
1 1 1
plate
2 2 2
$
$
*MAT_RIGID
$ mid ro e pr n couple m alias
1 7.85e-04 30.00e+06 0.300
$
$ cmo con1 con2
-1.0 1.0 100111
$
$ lco/a1 a2 a3 v1 v2 v3
1.0
$
*DEFINE_COORDINATE_VECTOR
$ cid xt yt zt xh yh zh
1 1.000E+00 0.000E+00 1.000E+00 0.000E+00 0.000E+00 1.000E+00
$
*MAT_ELASTIC
$ mid ro e pr da db k
2 7.85e-04 30.00e+06 0.300
$
$
*SECTION_SOLID
$ sid elform
1 0
$
*SECTION_SHELL
$ sid elform shrf nip propt qr/irid icomp
2
$ t1 t2 t3 t4 nloc
1.0 1.0 1.0 1.0
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$$$$ Loading
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
$
*LOAD_SEGMENT
$ lcid sf at n1 n2 n3 n4
1 1.000E+00 0.000E+00 53 49 50 54
1 1.000E+00 0.000E+00 57 53 54 58
1 1.000E+00 0.000E+00 61 57 58 62
1 1.000E+00 0.000E+00 54 50 51 55
1 1.000E+00 0.000E+00 58 54 55 59
1 1.000E+00 0.000E+00 62 58 59 63
1 1.000E+00 0.000E+00 55 51 52 56
1 1.000E+00 0.000E+00 59 55 56 60
1 1.000E+00 0.000E+00 63 59 60 64
$
*DEFINE_CURVE
$ lcid sidr scla sclo offa offo
1
$ abscissa ordinate
0.000E+00 1.000E+02
1.000E-02 1.000E+02
$
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$$$$ Define Nodes and Elements
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$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
$
$...>....1....>....2....>....3....>....4....>....5....>....6....>....7....>....8
$
$
*END
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