DDM-Based Response Sensitivity Computation Tcl Commands:
Introduction
Only new commands are listed here
General commands
reliability Command
- This command creates the reliability domain in which the sensitivity, reliability and optimization components are kept. This
- reliability domain is parallel to the finite element (FE) domain in OpenSees. Currently, the commands for stand-alone sensitivity : analysis (e.g., sensitivityIntegrator, sensitivityAlgorithm) are set in the reliability domain only and, thus, the ‘reliability’
：： {| ：： | style="background:yellow; color:black; width:800px" | reliability ：： |}
parameter Command
- In DDM-based FE response sensitivity analysis, the sensitivity parameters can be material,
- geometry or discrete loading parameters. Each parameter should be defined as:
| parameter $tag <specific object arguments> |
UniaxialMaterial Commands
Several uniaxial materials are available for DDM-based FE response sensitivity computation.
SteelMP Command
- This command is used to construct a uniaxial Menegotto-Pinto steel material object.
- 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.
| uniaxialMaterial SteelMP $matTag $sigmaY $E $b |
SmootPSConcrete Command
- This command is used to construct a uniaxial smoothed Popovics-Saenz concrete material object,
- Reference:
- Zona A., Barbato M., Conte J.P. (2005). “Finite element response sensitivity analysis of steel-concrete composite beams with
- deformable shear connection.” Journal of Engineering Mechanics (ASCE), 131(11):1126–1139.
| uniaxialMaterial SmoothPSConcrete $matTag $fc $fu $Ec $epso $epsu $eta |
The following Analysis commands are added to the interpreter to create the Analysis and perform the analysis: