Shell Element: Difference between revisions
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| style="background: | | style="background:lime; color:black; width:800px" | '''element ShellMITC4 $eleTag $iNode $jNode $kNode $lNode $secTag''' | ||
|} | |} | ||
| Line 26: | Line 26: | ||
NOTE: | NOTE: | ||
#The valid queries to a Quad element when creating an ElementRecorder object are 'forces', 'stresses,' and 'material $matNum matArg1 matArg2 ...' Where $matNum refers to the material object at the integration point corresponding to the node numbers in the isoparametric domain. | #The valid queries to a Quad element when creating an ElementRecorder object are 'forces', 'stresses,' and 'material $matNum matArg1 matArg2 ...' Where $matNum refers to the material object at the integration point corresponding to the node numbers in the isoparametric domain. | ||
#It is a 3D element with 6 dofs and CAN NOT be used in 2D domain. | |||
---- | ---- | ||
EXAMPLE: | EXAMPLE: | ||
<pre> | |||
set t 100.0 | |||
model basic -ndm 3 -ndf 6 | |||
nDMaterial ElasticIsotropic 1 200000 0.3 | |||
nDMaterial PlateFiber 4 1 | |||
set secArgs "7" | |||
section PlateFiber $secArgs 4 $t | |||
set EleType ShellMITC4 | |||
block2D $n1 $n2 1 1 $EleType $secArgs { | |||
1 0.0 0.0 0.0 | |||
2 0.0 10 0.0 | |||
3 1000 10 0.0 | |||
4 1000 0.0 0.0 | |||
} | |||
</pre> | |||
REFERENCES: | REFERENCES: | ||
Dvorkin,Bathe, A continuum mechanics based four node shell | |||
element for general nonlinear analysis, Eng.Comput.,1,77-88,1984 | |||
---- | ---- | ||
Original implementation: <span style="color:blue">Ed Love</span> | |||
Latest revision as of 16:59, 2 June 2022
- Command_Manual
- Tcl Commands
- Modeling_Commands
- model
- uniaxialMaterial
- ndMaterial
- frictionModel
- section
- geometricTransf
- element
- node
- sp commands
- mp commands
- timeSeries
- pattern
- mass
- block commands
- region
- rayleigh
- Analysis Commands
- Output Commands
- Misc Commands
- DataBase Commands
This command is used to construct a ShellMITC4 element object, which uses a bilinear isoparametric formulation in combination with a modified shear interpolation to improve thin-plate bending performance.
| element ShellMITC4 $eleTag $iNode $jNode $kNode $lNode $secTag |
| $eleTag | unique element object tag |
| $iNode $jNode $kNode $lNode | four nodes defining element boundaries, input in counter-clockwise order around the element. |
| $secTag | tag associated with previously-defined SectionForceDeformation object.
Currently must be either a PlateFiberSection, or ElasticMembranePlateSection |
NOTE:
- The valid queries to a Quad element when creating an ElementRecorder object are 'forces', 'stresses,' and 'material $matNum matArg1 matArg2 ...' Where $matNum refers to the material object at the integration point corresponding to the node numbers in the isoparametric domain.
- It is a 3D element with 6 dofs and CAN NOT be used in 2D domain.
EXAMPLE:
set t 100.0
model basic -ndm 3 -ndf 6
nDMaterial ElasticIsotropic 1 200000 0.3
nDMaterial PlateFiber 4 1
set secArgs "7"
section PlateFiber $secArgs 4 $t
set EleType ShellMITC4
block2D $n1 $n2 1 1 $EleType $secArgs {
1 0.0 0.0 0.0
2 0.0 10 0.0
3 1000 10 0.0
4 1000 0.0 0.0
}
REFERENCES:
Dvorkin,Bathe, A continuum mechanics based four node shell element for general nonlinear analysis, Eng.Comput.,1,77-88,1984
Original implementation: Ed Love