Bidirectional Section: Difference between revisions
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* The bidirectional section is a suitable base isolator model and should be used in conjunction with a [[ZeroLengthSection]] element to this end. | * The bidirectional section is a suitable base isolator model and should be used in conjunction with a [[ZeroLengthSection_Element | ZeroLengthSection]] element to this end. | ||
* The implementation is a generalization of the uniaxial return map algorithm for rate independent plasticity (page 45, Simo and Hughes, 1998) | * The implementation is a generalization of the uniaxial return map algorithm for rate independent plasticity (page 45, Simo and Hughes, 1998) | ||
Revision as of 21:28, 14 September 2012
- 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 allows the user to construct a Bidirectional section, which is a stress-resultant plasticity model of two coupled forces. The yield surface is circular and there is combined isotropic and kinematic hardening.
| section Bidirectional $secTag $E $Fy $Hiso $Hkin |
| $secTag | unique section tag |
| $E | elastic modulus |
| $Fy | yield force |
| $Hiso | isotropic hardening modulus |
| $Hkin | kinematic hardening modulus |
NOTES:
- The bidirectional section is a suitable base isolator model and should be used in conjunction with a ZeroLengthSection element to this end.
- The implementation is a generalization of the uniaxial return map algorithm for rate independent plasticity (page 45, Simo and Hughes, 1998)
Code Developed by: Michael H. Scott, Oregon State University