Fiber

• Sensitivity_Command_Manual
  • General Commands
    • reliability
    • parameter
    • addToParameter
    • updateParameter
    • sensitivityIntegrator
    • sensitivityAlgorithm
    • recorder
  • Material Commands
    • uniaxialMaterial
    • nDmaterial
  • Section Commands
    • Fiber
    • Elastic
    • Aggregator
  • Element Commands
    • dispBeamColumnWithSensitivity
    • quadWithSensitivity
    • bbarBrickWithSensitivity
  • Constraint Commands
    • Transformation

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Both 2-D and 3-D fiber sections are available for response sensitivity computation.

section Fiber $secTag {

fiber <fiber arguments>

patch <patch arguments>

layer <layer arguments>

}

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References:

http://opensees.berkeley.edu/OpenSees/manuals/usermanual/index.html

Spacone E., Filippou F.C., Taucer F.F. (1996). “Fibre beam-column element for nonlinear analysis of R/C frames. Part I: Formulation.” Earthquake Engineering and Structural Dynamics, 25:711-725.