Joint II
This example illustrates the usage of *CONSTRAINED_JOINT keyword to model a translational joint. Download is available in the download section of this document.
Keywords
*CONSTRAINED_EXTRA_NODES_NODE *CONSTRAINED_EXTRA_NODES_SET *CONSTRAINED_JOINT_TRANSLATIONAL *CONTROL_CPU *CONTROL_ENERGY *CONTROL_TERMINATION *DATABASE_BINARY_D3PLOT *DATABASE_GLSTAT *DATABASE_JNTFORC *DATABASE_MATSUM *ELEMENT_SHELL *END *INITIAL_VELOCITY_NODE *KEYWORD *MAT_ELASTIC *MAT_RIGID *NODE *PART *SECTION_SHELL *SET_NODE *TITLE
Reduced Input
*KEYWORD
*TITLE
translational joint between shells
$
$ - one shell is elastic (to control time step size)
$
$ - no stiffness in joint, so local coordinate system is
$ not needed
*CONSTRAINED_JOINT_translational
$ 2 10 1 9 11 12 0.100E+01
$ 3rd node pair need not form vector perpendicular to free direction
$ 2 10 1 9 4 104 0.100E+01
2 10 1 9 3 103 0.100E+01
*constrained_extra_nodes_node
1,11
2,12
*CONTROL_TERMINATION
2.000E-02 0 0.000E+00 0 0.000E+00
*DATABASE_BINARY_D3PLOT
5.000E-04
*initial_velocity_node
$23456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789
3 90. 300.
4 90. 300.
*control_energy
2 0 2
*database_glstat
1.000E-04
*database_matsum
1.000E-04
*database_jntforc
1.000E-04
*CONTROL_CPU
0.000E+00
*MAT_RIGID
1 7.000E-04 3.000E+07 3.000E-01 0.000E+00 0.000E+00 0.000E+00
0.000E+00 0.000E+00 0.000E+00
0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
*MAT_RIGID
2 7.000E-04 3.000E+07 3.000E-01 0.000E+00 0.000E+00 0.000E+00
0.000E+00 0.000E+00 0.000E+00
0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000E+00
*MAT_ELASTIC
3 7.000E-04 3.000E+07 3.000E-01
*SECTION_SHELL
1 0 0.000E+00 0.000E+00 0.000E+00 0.000E+00
1.000E-01 1.000E-01 1.000E-01 1.000E-01 0.000E+00
*SECTION_SHELL
2 0 0.000E+00 0.000E+00 0.000E+00 0.000E+00
1.000E-01 1.000E-01 1.000E-01 1.000E-01 0.000E+00
*SECTION_SHELL
3 0 0.000E+00 0.000E+00 0.000E+00 0.000E+00
1.000E-01 1.000E-01 1.000E-01 1.000E-01 0.000E+00
*PART
1 1 1 0
*PART
2 2 2 0
*PART
3 3 3 0
*NODE
$
*ELEMENT_SHELL
$
*constrained_extra_nodes_set
2,104
*set_node
104
104,103
*END
Figures
Animated Result
