Constraints
This example shows how to use *CONSTRAINED_LINEAR_LOCAL keyword to describe constraints in a local coordinate system.
https://www.dynaexamples.com/introduction/intro-by-k.-weimar/misc/constraints
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Constraints
This example shows how to use *CONSTRAINED_LINEAR_LOCAL keyword to describe constraints in a local coordinate system.
*BOUNDARY_PRESCRIBED_MOTION_NODE *CONSTRAINED_LINEAR_LOCAL *CONTROL_ENERGY *CONTROL_TERMINATION *DATABASE_BINARY_D3PLOT *DATABASE_EXTENT_BINARY *DATABASE_GLSTAT *DATABASE_HISTORY_NODE *DATABASE_NODOUT *DEFINE_CURVE *ELEMENT_SHELL *END *KEYWORD *MAT_ELASTIC *NODE *PART *SECTION_SHELL *TITLE
*KEYWORD
*TITLE
Linear Constraint Equations
*CONSTRAINED_LINEAR_LOCAL
$ LCID
1
$ NID DOF CID COEFF
$ 40 3 0.80
40 3 1.00
42 3 -1.00
*DEFINE_CURVE
$ i i f f f f
$ lcid sidr scla sclo offa offo
1
$ f f
$ abscissa ordinate
0.0 0.0
0.0005 -15.0
0.0010 -15.0
*BOUNDARY_PRESCRIBED_MOTION_NODE
$ i i i i f i
$ nid dof vad lcid sf vid
41 3 2 1 1.0
*CONTROL_TERMINATION
$ f i f f f
$ endtim endcyc dtmin endneg endmas
.5000E-3
*DATABASE_EXTENT_BINARY
$ i i i i i i i i
$ neiph neips maxint strflg sigflg epsflg rltflg engflg
1
$ i i i
$ cmpflg ieverp beamip
*DATABASE_BINARY_D3PLOT
$ f i
$ dt/cycl lcdt
0.0200E-3
*CONTROL_ENERGY
$ i i i i
$ hgen rwen slnten rylen
2 1 2
*DATABASE_GLSTAT
$ f
$ dt
0.0010E-3
*DATABASE_NODOUT
$ f i
$ dt
0.0010E-3
*DATABASE_HISTORY_NODE
$ i i i i i i i i
$ id1 id2 id3 id4 id5 id6 id7 id8
40 42
*MAT_ELASTIC
$ i f f f f f f
$ mid ro e pr da db k
1 7.85e-9 210000.0 0.3
*SECTION_SHELL
$ i i f f f f i
$ sid elform shrf nip propt qr/irid icomp
1 16 0.83333 2.0 3.0
$ f f f f f
$ t1 t2 t3 t4 nloc
2.0 2.0 2.0 2.0
*PART
$ c
$ head
Impacted Material
$ i i i i i i
$ pid sid mid eosid hgid adpopt
1 1 1 0 0 0
*NODE
$ i8 f f f i i
$ node x y z tc rc
*ELEMENT_SHELL
$ i i i i i i
$ eid pid n1 n2 n3 n4
*END