Recorder

[ninashnash]

Hi,


I have questions regarding the recorder (it might be funny for you, sorry). I could not find my answers by looking at manuals.

How I can get the rotation of beam-column element? (or any beam-column element)

How I can ger the force-displacement output of a zero-lenght element?

Is there any place or reference in which I can look for compelete response (types) to be recorded?

Thank you very much for your time and help,

[r0d4n]

Hi ninashnash,

elastic case:

you can get the rotation from nodal recorders of the i-j nodes and the forces from:

recorder Element -file ele1local.out -time -ele 1 localForce (or globalForce according with global coordinates)

fiber beam-column element case:

recorder Element -file $outputfile -time -ele $elemID section $isec deformation
recorder Element -file $outputfile -time -ele $elemID section $jsec deformation

recorder Element -file $outputfile -time -ele $elemID section $isec force
recorder Element -file $outputfile -time -ele $elemID section $jsec force

In this way you can get the curvatures and forces of the end sections of your elements according with the chosen number of integration points


For the ZLE you go with nodal recorders of i and j nodes

Opensees gives you more informations in the output if you use -xml instead of -file.


RODAN

[borjiajia]

[quote="r0d4n"]Hi ninashnash,

elastic case:

you can get the rotation from nodal recorders of the i-j nodes and the forces from:

recorder Element -file ele1local.out -time -ele 1 localForce (or globalForce according with global coordinates)

fiber beam-column element case:

recorder Element -file $outputfile -time -ele $elemID section $isec deformation
recorder Element -file $outputfile -time -ele $elemID section $jsec deformation

recorder Element -file $outputfile -time -ele $elemID section $isec force
recorder Element -file $outputfile -time -ele $elemID section $jsec force

In this way you can get the curvatures and forces of the end sections of your elements according with the chosen number of integration points


For the ZLE you go with nodal recorders of i and j nodes

Opensees gives you more informations in the output if you use -xml instead of -file.


RODAN[/quote]

What do you mean by
"Opensees gives you more informations in the output if you use -xml instead of -file." ?

[vesna]

In the command manual (http://opensees.berkeley.edu/wiki/index ... and_Manual) you can find definition of the all arguments in order to define the recorder. If you want to record nodal responses look here:
http://opensees.berkeley.edu/wiki/index ... e_Recorder

To record the element response first look here for definition of the element recorder:
http://opensees.berkeley.edu/wiki/index ... t_Recorder
and then go to the element of interest to see which responses you can record for that element. For example, zeroLenght element can output: 'force,' 'deformation,' 'stiff,' and 'material $matNum matArg1 matArg2 ...' Where $matNum is the tag associated with the material whose data is to be output (these element outputs are given under NOTE).

[akaratze]

Hello,

I have a question concerning the recorders in opensees. I have a rigid beam element of 1m dimension in x-x (node1 ... node2) and I would like to record its rotation. The analysis is elastic in 2D. I used this record for one of the nodes of my element:

recorder Node -file DBase.out -time -node 1 -dof 3 disp; # displacements at found

Can anyone help me? The record I used gives displacement due to rotation, rotation or relative vertical displacement/element length? How can I record the element elastic rotation (in rad) in one step?

Thank you very much
With my best regards
AK

[vesna]

The recorder you used gives you rotation of node 1. If your element is rigid the rotation of the element should be the same as rotation of the node.

[akaratze]

thank you very much for your help.
AK

[sugandha]

Hi,

I am trying to get force for a zerolength element using the following command:-

recorder Element -file Data/Force.out –time -ele 1 force;

but my output file is empty. Can you please help me with that?

Thanks,
Sugandha

[mahjoob]

hi
im have a same problem
Can you please help me with that?

[fmk]

what are the element commands