The OpenSees Community

thank you very much indeed

thank you, i would be grateful if you send me a detailed adaptive strategy in tcl.

I would be thankful if anyone answer

the command set AccelSeries "Series -dt $dt -filePath $EQ_NAME -factor $GMfact"; # time series information defines the time-acceleration for dynamic analysis; the command set ok [analyze $Nsteps $DtAnalysis]; is conducted to analyze in step as $DtAnalysis 1- is it necessary that $dt==$DtAn...

what is the usage of this line in the analysis code? test $testTypeDynamic $TolDynamic $maxNumIterDynamic $printFlagDynamic; and what is the differences between these two lines? 1- test $testTypeDynamic $TolDynamic $maxNumIterDynamic $printFlagDynamic; 2- test $testTypeDynamic $TolDynamic $maxNumIte...

what is the acceptable number for TolDynamic in Nonlinear Dynamic Analysis? here are some part of code " variable TolDynamic 1.e-5; # Convergence Test: tolerance variable maxNumIterDynamic 1000; # Convergence Test: maximum number of iterations that will be performed before "failure to conv...

what are the alternative when the analysis does not converge?
1- to small $DtAnalysis?
2-to change integrator type?
or others
which of them are preferable?

i have made a 2-d model for RC moment frame, uniform excitation in one direction was applied on the model. i would like to conduct IDA (incremental dynamic analysis). the duration of selected record was 99.93 second. this message was appeared at the end. " Trying NewtonWithLineSearch .. WARNING...

TPdct wrote:
> Also, I advise you to use OpenSeesMP with Mumps solver to make computation
> fast enough
Thanks for your reply;
this error was due to modeling;
and it removed when i examined and correct the model;
i would like to thank you for your reply; it would be useful for me.

i conducted IDA analysis for my model and this message is printed i want to know that does it show that the analysis converge successfully? in other word when analysis get completed it always means that it converged or not? " OpenSees -- Open System For Earthquake Engineering Simulation Pacific...

and when i changed it from Pdelta to corotational it works,
does every body know why this happens?
and another matter is that does corotational trnasformation include both Pdelta and linear?

dear all would you please tell me that is it possible that we use geomTransf PDelta %d in the column with zerolenght element in the column? i mean that i have a column element that has concentrated plastic hinge at the both ends and this columns has also elasticBeamColumn i have a model as i said fi...

Pardon me, I am sorry, but i do not understand your answer. Do you answer my two questions? I issued eigen command without any analysis command and it works, do you mean it is necessary analysis command to be put before eigen analysis? If it is necessary so why it works without it?! Another problem ...

i would like to ask you all to shed some light on this problem: 1- i ran a 3-storey in 3-D mode exactly similar to OpenSess example in OpenSees wiki when i put "eigen command" after gravity analysis it does not work but when i put "eigen command" before gravity analysis it worked...

I have modelled a 1-story building similar to the examples in OpenSees wiki. Surprisingly the software reports 14 periods for this model while I expect only three peiods since this is a 3 degree of freedom system (floors are modelled as rigid diphtagms).