SteelMP Material

• 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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This command is used to construct a uniaxial Menegotto-Pinto steel material object.

uniaxialMaterial SteelMP $matTag $sigmaY $E $b

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$matTag	unique material object integer tag
$sigmaY	yield stress or force
$E	initial tangent stiffness
$b	strain-hardening ratio (ratio between post-yield tangent and initial elastic tangent)

For this material class, the sensitivity parameters can be: sigmaY, E, b

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Reference:

Barbato M., Conte J.P. (2006). “Finite element structural response sensitivity and reliability analyses using smooth versus non-smooth material constitutive models.” International Journal of Reliability and Safety, 1(1-2):3-39.