rotation of isolator2spring section

[linzhidan]

dear vesna,
my question is to recording the rotation of isolator2spring. but there is some rule in this section,
the important is it is really have the rotation--theta in the equations.
follow the example in opensees:
fix 1 1 1 1;
fix 2 0 0 1; "it shold be constrained against rotation"----said in opensees.
section Iso2spring 1 $tol $k1 $fyo $k20 $kv0 $hb $pe $p0;
element zeroLengthSection 1 1 2 1;

if i record like this:
record Element 1 -file element1.out deformation;------it must be zero at the third column (rotation value), because the condition fixed rotation.
so how to .....
waiting for your reply

[linzhidan]

Dear vesna, would you please consider my question?
Thank you very much.

[vesna]

Record it in -xml format to see what each of the columns of the output file stands for.

[linzhidan]

dear vesna,
i have writen the recorder command like this:
recorder Element -xml $dataDir/iso2spring_clcEle.txt -time -ele 1 deformation;

this is the contents about iso2spring_clcEle.txt . the first column is time, second column is displacement of x, third is displacement of y ,fourth is rotation.
and i have check the fourth column,there is all zeros.

my question also is how to get the ratation---theta.

<?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">
<TimeOutput>
<ResponseType>time</ResponseType>
</TimeOutput>
<ElementOutput eleType="ZeroLengthSection" eleTag="1" node1="1" node2="2">
<ResponseType>e1</ResponseType>
<ResponseType>e2</ResponseType>
<ResponseType>e3</ResponseType>
</ElementOutput>
<Data>
1.50379e-006 9.6e-005 -0.0017311 0
3.00757e-006 0.000192 -0.00173111 0
4.51136e-006 0.000288 -0.00173111 0
6.01514e-006 0.000384 -0.00173111 0
7.51893e-006 0.00048 -0.00173111 0
9.02271e-006 0.000576 -0.00173112 0
1.05265e-005 0.000672 -0.00173112 0
1.20303e-005 0.000768 -0.00173113 0
1.35341e-005 0.000864 -0.00173114 0
1.50379e-005 0.00096 -0.00173114 0
1.65416e-005 0.001056 -0.00173115 0
1.80454e-005 0.001152 -0.00173116 0
1.95492e-005 0.001248 -0.00173117 0
2.1053e-005 0.001344 -0.00173118 0
2.25568e-005 0.00144 -0.00173119 0
2.40606e-005 0.001536 -0.00173121 0
2.55644e-005 0.001632 -0.00173122 0
2.70681e-005 0.001728 -0.00173123 0
2.85719e-005 0.001824 -0.00173125 0
. . . .
. . . .
. . . .

[vesna]

Try to record nodal rotation to see if you are going to get what you are looking for.

What would you get with this recorder:
recorder Element -xml $dataDir/iso2spring_clcEle.txt -time -ele 1 section 1 deformation;

[linzhidan]

vesna wrote:
> Try to record nodal rotation to see if you are going to get what you are looking
> for.
>
> What would you get with this recorder:
> recorder Element -xml $dataDir/iso2spring_clcEle.txt -time -ele 1 section 1 deformation;

dear vesna,

1. in my first post about rotation of isolator2spring section,
i said there is some rule in this isolator2spring section,
it is :
"it shold be constrained against rotation"----said in opensees.
so,
fix 1 1 1 1;
fix 2 0 0 1;
section Iso2spring 1 $tol $k1 $fyo $k20 $kv0 $hb $pe $p0;
element zeroLengthSection 1 1 2 1;

so if i record nodal ratation, it also is zeros in rotation.
my question is to recording the rotation of isolator2spring.
the important is it is really have the rotation--theta in the equations.
how to get it.

2. you ask me: > What would you get with this recorder:
> recorder Element -xml $dataDir/iso2spring_clcEle.txt -time -ele 1 section 1 deformation;

at the first time, the recorder like this: record Element 1 -file element1.out deformation;
so vesna wrote:
> Record it in -xml format to see what each of the columns of the output file stands for.
and then i record it : recorder Element -xml $dataDir/iso2spring_clcEle.txt -time -ele 1 deformation;

thanks!

[vesna]

Ok, I see. Node 2 is fixed for rotation. Rotation theta is the internal rotation of the element.

Did you get any rotation with this recorder:
recorder Element -xml $dataDir/iso2spring_clcEle.txt -time -ele 1 section 1 deformation

In case you did not then there is no way to retrieve that information.

[linzhidan]

vesna wrote:
> Ok, I see. Node 2 is fixed for rotation. Rotation theta is the internal
> rotation of the element.
>
> Did you get any rotation with this recorder:
> recorder Element -xml $dataDir/iso2spring_clcEle.txt -time -ele 1 section 1
> deformation
>
> In case you did not then there is no way to retrieve that information.

dear vesna,
thank you very much for your help, thanks!
i did not get rotation in -xml format as you said.

in my opinion, would you please talk with the author Keri L. Ryan ( Assistant Professor ) about this problem?
i have gave her several emails , but i did not get a reply, i think my email was covered with her lots of emails.
maybe you may talk with her easily, i think.

thank you for your reply and help!

[vesna]

I will contact her.

[linzhidan]

vesna wrote:
> I will contact her.

thanks, vesna!
waiting for your news.

[linzhidan]

> vesna wrote:
> > I will contact her.
>

dear vesna,
did you contact Keri L. Ryan ( Assistant Professor ) about rotation of isolator2spring section ?
is there anything news about isolator2spring?
waiting for your reply!

[vesna]

I have contacted her but did not get a response yet.

[linzhidan]

thank you