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Hi there, i had two frame models, the first one has the fixed end as the boundary condition, the other one has the rotation spring as the boundary condition. I recorded the deformation and plot the deformation shapes of these two models, but it turned out that they had the same deformation shapes. P...

no, it stiill doesnt work for my model, the results(deformation) i got from the sping model are the same as the fixed end model.

do you know why i got this problem?

Thank you very much~

thank you so much for your helpful reply, i actually wanna model a 3D frame, a single story single bay frame, having one rotation spring at each end of the beam column connection. besides, i also have a question about my earlier model, i used to have a fixed end frame, and i changed the fixed ends i...

thank you for your reply. here is the units file # UNITS AND CONSTANTS # Define basic units set m 1.0; # meter set sec 1.0; # second set kN 1.0; # kiloNewton # Define constants set PI [expr 2*asin(1.0)]; # pi set g [expr 9.81*$m/pow($sec,2)]; # gravity set U 1.e+10; # a really large number set u [ex...

4,5　　　　　　　　6,7 ●◎══════════════◎● ◎　　　　　　　　　◎ ║3.　　　　　　　　║8 ║　　　　　　　　　║ ║　　　　　　　　　║ ║2.　　　　　　　　║9 ◎　　　　　　　　　◎ ●1.　　　　　　　　●10 ╩　　　　　　　　　╩ for { set runnum 1 } { $runnum <= 17} { incr runnum } { wipe; model basic -ndm 3 -ndf 6; file mkdir try; source Units&Constants.tcl; set alpha [expr 0.01+2.0*(...

Hi there, how can i make a model about rotation springs in a single story single bay frame, i wanna have rotation spring at all the connections, so there are 4 springs, 8 nodes, i dont know how i can make the beam with springs at both end, the following is my code, please let me know where my mistak...

Hi, i followed the example you provided, i changed element zeroLength to element zerolengthSection, then i got error said fail to converge...

please let me know what i should do to fix this error.

Thanks a lot

i would like to have a rotation spring as my bottom boundary condition, the following is my code, but i got an error said" erroe 126 returned in factorization dgstrf()", i have no idea what it means, and i have already tried every methods that i think they may help, but unlucky, they are n...

hi there, i saw a example (zerolengh3, rotation spring), there was a "source rotSpring2D.tcl", could you please let me know where i can get this tcl?

thanks

thanks for the reply, but when i tried to change my fixed boundry condition to a rotation spring, i got an error says analyze failed, returned -3error flag. i basically added another node which has the same location as the node where i wanna have the spring, and i added a zerolengh element, using &q...

Hi, i have a question about rotation spring, can it be used in 3D model? thanks

Hi there, i want to get the period of a structure which considered P-delta effects, so i added the following code at the end of my code.(after the load pattern) but i got an error says "missing operator at _@_ in expression...+001 -1.344782e+001....." set xDamp 0.02; # damping ratio (0.02-...

can you explain it more? cause my previous model works, and i only added p-delta effects on it, and it doesnt work now...

so i am comfused...

my model is a column, and i devided it into 20 elements, for example the length of the column is L, so for each element, the length should be L/20, but when i define the element length as L/20, i got an error says "analyze failed, returned :-3 erroe flag, warning bandgenlinlapacksolve::solve()-...

what makes me confused is that why when i have structure lower than 6-story, the code works, but if it is higher than 6-story, the code doesnt work...and give me the argument not in valid range error... and i have one question, when i wanna consider p-delta effects, as you can see, i add the P on co...