Tri31 Element: Difference between revisions
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Code Developed by: <span style="color:blue"> [http:// | Code Developed by: <span style="color:blue"> [http://www.roozbehgm.com/ Roozbeh G. Mikola], UC Berkeley</span> and <span style="color:blue"> [http://www.ce.berkeley.edu/~sitar/ N. Sitar], UC Berkeley</span> | ||
Revision as of 06:21, 6 April 2016
- 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 constant strain triangular element (Tri31) which uses three nodes and one integration points.
| element tri31 $eleTag $iNode $jNode $kNode $thick $type $matTag <$pressure $rho $b1 $b2> |
| $eleTag | unique element object tag |
| $iNode $jNode $kNode | three nodes defining element boundaries, input in counter-clockwise order around the element. |
| $thick | element thickness |
| $type | string representing material behavior. The type parameter can be either "PlaneStrain" or "PlaneStress." |
| $matTag | tag of nDMaterial |
| $pressure | surface pressure (optional, default = 0.0) |
| $rho | element mass density (per unit volume) from which a lumped element mass matrix is computed (optional, default=0.0) |
| $b1 z$b2 | constant body forces defined in the domain (optional, default=0.0) |
NOTE:
- Consistent nodal loads are computed from the pressure and body forces.
- The valid queries to a Tri31 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 domain.
Code Developed by: Roozbeh G. Mikola, UC Berkeley and N. Sitar, UC Berkeley