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I fixed it It was mass problem. loadConst -time 0.0 I changed my codes like below (after analyzing gravity load). =========================== puts "Gravity analysis complete" mass 2 [expr $m/1400*350] 1.e-9 0.0; mass 3 [expr $m/1400*350] 1.e-9 0.0; mass 4 [expr $m/1400*350] 1.e-9 0.0; mass...

If it occuring during the analysis, how to correct "0 stiffness" ????????????

I....still cannot solve this problem... T^T
help me plz........

Thank you, fmk!!
i want to choose 2nd slolution, and i've got question....
what is "the initial tangent" mean??
is that mean one of the rayleigh damping constants??
thank you again.

thank you!
I didn't know that and removed section aggregators!
But!!!!!!!!!!!!!!!!!!!!!still have same error.........
I am just goning carzy..........T^T
How can I fixed this error...???????

thanks vesna i saw the example and fixed analysis command. but it still have error..and.. error is become more complex.... and i have a question about the command that used in example, ReadRecord command is not worked at all.. i'm using OpenSees2.2.2 version... should i upgrade it? i upgraded to ver...

Hi, I have questions about my error.... here is my error Massege; ================================================================= WARNING BandGenLinLapackSolver::solve<> -LAPACK routine returned 2 WARNING NewtonRaphson::solveCurrentStep<> -the KnearSysOfEqm failed in solve<> DirectIntegrationAnaly...

hi all,

i have some errors when operating EQ analysis..

and ma question is that should i apply "mass" on the x-dir.?

if i have to apply on the x-dir., what value should be applied?

is it weight/g ?????? how about y-dir.?

hi all. i have some problems with my code i want to do EQ analyzis with SAC ground motion of LA21 but there is errors.................... i'm an king begginer.....with EQ analysis....somebody plz help me.. there are my codes (this codes are work properly with push-over analysis) --------------------...