Section aggregator, How to record shear distortion?

[sriram]

Hi Silvia and others,

I am modelling RC shear wall with nonlinear beam column elements. I am using sectionaggregator to account for the shear deformations. I wanted to compare the experimental shear distortion with the simulated values. So the question I have is, if there is any command available in opensees, to record the shear distortion in each element using recorders or any other means? I looked in the manual but didn't find anything. It will be a great help, if you can let me know, as I need this for the final report of NEES project to NSF.

Thank you.
-sriram.

[silvia]

doesn't the section deformation recorder on the aggregated section give you shear deformations???

[sriram]

Hi silvia, when i use the section deformation recorder on section aggregator, I get 4 columns of data. I am thinking those 4 columns of data represent follwing things.

the first one is force
2nd column: axial strain
3rd column : curvature
4th column : shear deformation

please let me know if I am correct.
thanks.

[silvia]

the first one is actually time -- proportional to force in a linear load pattern...

are you sure columns 3 and 4 are as you say? i'd guess the opposite.
put in -xml instead of -file so you see what the columns are in the header of the file.

[sriram]

Hi silvia,
Tahnks for the help. I took your suggestion adn used -xml. I got this output. So, I a guess the last column is gammaY, that is shear distortion. I hope I am correct. Let me know. Thanks for the help.


<?xml version="1.0" encoding="UTF-8"?>
<OpenSees
xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation = "http://OpenSees.berkeley.edu/xml-schema ... enSees.xsd">

<OpenSeesOutput>
<TimeOutput>
<ResponseType>time</ResponseType>
</TimeOutput>

<ElementOutput eleType="ForceBeamColumn2d" eleTag="2" node1="2" node2="3">
<GaussPointOutput number="1" eta="0.000000">
<SectionOutput secType="SectionAggregator" secTag="4">
<ResponseType>eps</ResponseType>
<ResponseType>kappaZ</ResponseType>
<ResponseType>gammaY</ResponseType>
</SectionOutput>
</GaussPointOutput>
</ElementOutput>

<Data>
3.171451 0.000000 0.000000 -0.000039

[silvia]

yup