The OpenSees Community

silvia wrote:i'm a big fan of Crimson Editor, it is free, i really like it.

thanks, silva.

Thanks.

silva, Thank you very much. You mean we can run Opensees through Matlab? How? If so, this will solve my problem. I can use my Identification program and run Opensees (Finite element model), in this process, I will send some values to OpenSees. And also some variables will be assigned new values to O...

Thanks. I don't think OpenSees has the stuff to do identification / signal processing. If I can incorporate those stuff into opensees or make a link/interface between Opensees and some external softwares' command (e.g. Matlab), that will be great. I have considered this before, but Ｉam not familiar ...

I want to use Structural identification algorithms in the OpenSees. It needs signal processing commands from Matlab or if there are some in Opensees, it is better.

Could anybody let me know is this applicable?

Thanks.

I want to do nonlinear Finite Element model analysis of a Bridge.

Which software is better? OpenSees or ABAQUS, AnSYS?

Thanks a lot!

however, it is very difficult, cuz i need toolbox from other softwares, or I need to program it myself, which complicate the problems

how to do dynamic responses with (M, C, K known, and K variable),

Known: M,C,K(variable), input ( sinusoidal or earthquake wave)

To get response, using NewMark beta or wilson theta, etc.

Thanks!

class?

e.g. apply fx=sin(10*t+200) to the nodes in the truss

tks

I am thinking about Incorporate a Modified Bouc-Wen Model( with incremental form and finite formulation) into OpenSees.

not have much time to do this,

thanks

# Calculate the Frequencies and Mode shapes set f [open mode.out a+] #statement line puts $f " Period Frequency" puts $f " T/sec Hz" set lambda [eigen 10] for {set i 0} {$i<10} {incr i 1} { set lambdaa [lindex $lambda $i] set omega [expr pow($lambdaa,0.5)] set Tperiod [expr 2*3.1...

what are the commands,,,

no, not solve the problem of recorder envelope yet