Section Aggregator: Difference between revisions

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| || T Torsion Force-Deformation
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| '''$sectionTag''' || tag of previously-defined Section object to which the UniaxialMaterial objects are aggregated as additional force-deformation relationships
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[[Image:SectionAggregator.gif]]


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section Aggregator 2 2 Vy -section 4; # create new section with IDtag 2, taking the existing material tag 2 to represent the shear and adding it to the existing section tag 4, which may be a fiber section where the interaction betweeen axial force and flexure is already considered.
section Aggregator 2 2 Vy -section 4; # create new section with IDtag 2, taking the existing material tag 2 to represent the shear and adding it to the existing section tag 4, which may be a fiber section where the interaction betweeen axial force and flexure is already considered.
THEORY:
Read if you're using moment-curvature in beamWithHinges element to represent moment-rotation, or vice versa
http://earthquakespectra.org/doi/abs/10.1193/1.4000136


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Code Developed by: <span style="color:blue"> Micheal H. Scott, Oregon State </span>
Code Developed by: <span style="color:blue"> Micheal H. Scott, Oregon State </span>

Latest revision as of 23:15, 13 August 2013




This command is used to construct a SectionAggregator object which aggregates groups previously-defined UniaxialMaterial objects into a single section force-deformation model. Each UniaxialMaterial object represents the section force-deformation response for a particular section degree-of-freedom (dof). There is no interaction between responses in different dof directions. The aggregation can include one previously defined section.


section Aggregator $secTag $matTag1 $dof1 $matTag2 $dof2 ....... <-section $sectionTag>



$secTag unique section tag
$matTag1 $matTag2 ... tag of previously-defined UniaxialMaterial objects
$dof1 $dof2 ... the force-deformation quantity to be modeled by this section object. One of the following section dof may be used:
P Axial force-deformation
Mz Moment-curvature about section local z-axis
Vy Shear force-deformation along section local y-axis
My Moment-curvature about section local y-axis
Vz Shear force-deformation along section local z-axis
T Torsion Force-Deformation
$sectionTag tag of previously-defined Section object to which the UniaxialMaterial objects are aggregated as additional force-deformation relationships



EXAMPLE

section Aggregator 2 2 Vy -section 4; # create new section with IDtag 2, taking the existing material tag 2 to represent the shear and adding it to the existing section tag 4, which may be a fiber section where the interaction betweeen axial force and flexure is already considered.


THEORY:

Read if you're using moment-curvature in beamWithHinges element to represent moment-rotation, or vice versa

http://earthquakespectra.org/doi/abs/10.1193/1.4000136


Code Developed by: Micheal H. Scott, Oregon State