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ok,firstly,i do as you told me to compute the peroid,it does work ,but i still can't get right value,so i set mass to the top node of the iso2spring,the value of the mass is coresponding to the superstrture's mass,then,the period is right which is in a reasonable domain.so i have a suggestion that t...

hi vesna,i have solved the problem,thank you.

dear vesna:
i did it as you told me ,but the result is still not changed.i try to change the constraint of iso2spring ,the period return to a right value,but the constraint which i changed is not the one i need,could you tell me how to set the constraint of iso2spring?

you can change the eigen computation method from "genBandArpack" to "fullGenLapack" ,you can have a try.

sorry,I forgot to tell you that the original script is smoothly right,but when i add iso2spring section with zerolength element ,the period is extremely big, # Create Iso2spring section set k1 [expr 9262*$kN/$m] set Fyo [expr 90.4*$kN] set k2o [expr 926*$kN/$m] set kvo [expr 2132*$kN/$mm] set hb [ex...

thank you ,i have solved the problem,but i met another problem,when i run my script ,the period is very long ,about 1.0e+7sec,i could not find the solution,hope you can help me , # -------------------------------------------------------------------------------------------------- # 2D RC Frame-left #...

thank you ,i have solved the problem,but i met another problem,when i run my script ,the period is very long ,about 1.0e+7sec,i could not find the solution,hope you can help me , # -------------------------------------------------------------------------------------------------- # 2D RC Frame-left #...

dear all when i run my script showed below ,i met such warnings: WARNING BandGenLinLapackSolver::solve() -LAPACK routine returned 1 WARNING BandGenLinLapackSolver::solve() -LAPACK routine returned 1 WARNING BandGenLinLapackSolver::solve() -LAPACK routine returned 1 i hope somebody can help me solve ...

I have solved it,don't waste your time on it,my friends who will see this

wrong # args: extra words after "else" clause in "if" command while executing "if {(($pier==1)||($pier==[expr $NBay+1]))&&(($level==1)||($level==2))} {; set elemID [expr $N0col + $level*10 +$pier]; set nodeI [expr $level..." ("for" body line 3) invoked...

Thank U,I have found the problem that i used the pinching4 mat in a wrong way.

I also met such a problem , my problem is showed blow:
WARNING BandGenLinLapackSolver::solve() -LAPACK routine returned 6
could you tell me where it is?

Dear my friends, I have been learning this software for about two months,when i am programming my command flow ,I met the warnings showed below,I have been thinking about it for several days but failed to solve it,I hope you can help me. #### WARNING BandGenLinLapackSolver::solve() -LAPACK routine r...