Limit Curve Question

[ccharrin]

Hi,

When I change the $defType from 2 to 1 in the CenterColShearSpring.tcl file of the limit state material debugged example Opensees crashes. I know that defType 1 is for maximum beam-column chord rotations. Why doesn't it work for this example?

Thanks

[vesna]

Try contacting Mohammad, the guy that debugged the code.

[ccharrin]

Hi Vesna,

I am having difficulty locating Mohammad's contact info. Is there any chance you have it?

Thank you

[vesna]

Here it is:
m.r.azadi AT ut.ac.ir

[ccharrin]

Thank you Vesna.

[wuhaoshrek]

vesna wrote:
> Here it is:
> m.r.azadi AT ut.ac.ir

Hi vesna, the example does not give converged result for the dynamic case. For pushover and cyclic it is fine.

[mhscott]

Make sure you are using the latest version of OpenSees. I recently fixed a bug related to this issue.

[wuhaoshrek]

mhscott wrote:
> Make sure you are using the latest version of OpenSees. I recently fixed a
> bug related to this issue.

YES, I used the version 2.4.3<rev 5645>. And the analysis stopped at time 3.260800. By the way, when I compiled the
source code just updated this morning, there are 13 failed to get built. Thanks.

[mrazadi1986]

I have modified the example and sent it to Vesna to upload.

[cdv]

Dear all,
running the debugged examples of the limit state material (files downloaded from OpenSeeswiki) with the v. 2.4.3 (rev 5645 - 2013) i have found minor problems on:
1) the pushover analysis in load control works fine but it's necessary to change the node number (1 instead of 5) at which the reactions are recorded (the X reactions for node 5 is always 0);
2) the pushover analysis in displacement control works fine only with the same change reported at the point 1) and it's also necessary to change the node number of the integrator Dislacementcontrol (4 instead of 2);
in both cases the results are the same and equal to those reported in the Example Manual.
I hope to have your help in running the cyclic analysis, because OpenSees returns the following problems:
3) the cyclic analysis in load control works without changes in the original scripts but with unsignificant results (the displacement of node 4 and the reaction of the node 1 are very low about e-42);
4) the cyclic analysis in dislpacement control failed because it's necessary to set du = 0.01 out of the "if" loop; with this change Opensees started to work but immediately it stopped and this Windows warning appears: " OpenSees has stopped working. Windows is searching for a solution".
by using an OpenSees older version (downloaded in august 2012) it returns a convergence error on the domain of the element 99 (the beamcolumn). i cannot be more precise on this error because after the istallation of the last version of OpenSees i'm not able to run the old one.
Thanks in advance

[cdv]

this is the error for the cyclic analysis in displacement control point 4) with a previous version of OpenSees

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Pacific Earthquake Engineering Research Center -- 2.3.2.2

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OpenSees > source CenterCol_basicModel_Cyclic.tcl
HI
69.5 101.604 133.707 0.00239655 0.0761983 0.15
WARNING - ForceBeamColumn2d::update - failed to get compatible element forces &
deformations for element: 99(dW: << 1.78065e+019)
Domain::update - domain failed in update
DisplacementControl::newStep - model failed to update for new dU
StaticAnalysis::analyze() - the Integrator failed at iteration: 0 with domain at
load factor -3.2955e+039
OpenSees > analyze failed, returned: -2 error flag
WARNING - ForceBeamColumn2d::update - failed to get compatible element forces &
deformations for element: 99(dW: << 2.84904e+020)
Domain::update - domain failed in update
DisplacementControl::newStep - model failed to update for new dU
StaticAnalysis::analyze() - the Integrator failed at iteration: 0 with domain at
load factor -9.89123e+039
OpenSees > analyze failed, returned: -2 error flag
ANALYSIS FAILED
OpenSees >