recorder element

[Tas]

O.k Vesna,
It is good that we found out how the program works.

[amir70007]

Hi...
I can not understand what does "fiber 0.1 0.1" do in this command?and for what 0.1 , 0.1?
recorder Element -file Element1_9StressStrain.out -time -ele 1 9 section 1 fiber 0.10 0.10 stressStrain
THX

[vesna]

It records stress and strains at the fiber with coordinates 0.1, 0.1 in local coordinate system.

[meopensees]

vesna wrote:
> basicForces are forces at element ends (nodes i and j) that corresponds to
> basic degrees of freedom (e.g., if in 2D these are axial force at node j,
> moment at node i, and moment at node j).
>
> basicDermation are deformation that correspond to basic degrees of freedom
> (e.g., if in 2D these are axial displacement at node j, rotation at node i,
> and rotation at node j).
>
> plasticDermation are plastic deformation of an element (e.g., if in 2D
> these are plastic axial displacement at node j, plastic rotation at node i,
> and plastic rotation at node j).
what if i want to use recorder for another station in an element(for example basic deformation at L/4 of a column or beam)? shall i use another point (and element) there?
thanks

[vesna]

yes, you need a node at any location whose basic forces or basic deformation you want to record.

[kostast88]

So the conclusion of this post is that chord rotation and basic deformation are the same thing? Looking at the code of forcebeamcolumn, this apparently is:

// Chord rotation
else if (responseID == 3) {
vp = crdTransf->getBasicTrialDisp();
return eleInfo.setVector(vp);

I think this is the exact same thing as element rotation.I am a little confused on this, but to my knowledge, element rotation and chord rotation are different.

Any comments on this?

[sabir]

this topic was very interesting for me but i have 2 question:
1: can we say, chord rotation=(theta) y +(theta) plastic
2: this question may be unrelated to the topic but: for calculating the Rotation, can we say Pl*Curvature? then how is Pl?
i think for this we have determine the Pl previously, is it true?
Please help me
thanks

[fylseu]

sorry
What is chord rotation?
thanks