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Dear FMK and other friend :) I have developed a new material by the way of compiling dll.And it works well. Now I want to get current state of the model (the location of NodeI for example) in my material. When I include the Domain.h and Node.h in my cpp and use: Domain* theDomain = OPS_GetDomain(); ...

Hi~ I also faced the same errors. :shock: In VS2015, the stdio is defined by: _ACRTIMP_ALT FILE* __cdecl __acrt_iob_func(unsigned); #define stdin (__acrt_iob_func(0)) #define stdout (__acrt_iob_func(1)) #define stderr (__acrt_iob_func(2)) but in VS10/12/13 that is defined by : _CRTIMP FILE * __cdecl...

dear fmk: i cant find out the specific global system matrix form when use CentralDifference. why when using your paras, printA will return mass matrix? hope you kindly make some explanation. i use Newmark method, with no Damping, and printA will return Ke= K+1/(beta*dt**2)*M. if that is right (K is ...

Hi all, As is known to everybody, we can obtain global stiffness matrix by command PrintA. and for mass matrix, i tried my model under a simple Transient analysis and get the equivalent global matrix. then i can cal mass matrix. there is one thing i cant understand: as a 2D problem, no matter how mu...

fmk wrote:
> there probably is no need for the 1, as there is only 1 section in the
> TrussSection.
Thank you sir, I really learn much from you~

Hello everyone, I'm trying to use zeroLengthSection element to analyze moment-curvature of RC sections. I can get the result of moment and curvature through: "recorder Node -file ** -time -node * -dof ** disp;" and everything is alright. But command like : "recorder Element -file Element1.out -time ...

Dear all, The codes below get a strange result that I can’t understand. The model is a fiber-section RC column, and I am sure that the definition of it is correct. #------------------------------------------------------------------ #establish model … … #recorder #------------------------------------...

fmk wrote:
> you cannot obtain it using recorders. if you are using displacement based
> elements you can calculate it directly knowing nodal displacements. this is
> not possible for the beam column element.

Thanks for your kindly reply.
BTW, does Opensees have variable cross-section element?

Hey everyone, I have a simple question. I know that I can use command like below to record certain section's deformation, recorder Element -file xx.out -time -ele 1 section $i deformation the sections are defined previously as one IntgrPts. But how can I get one section' displacement? I ask this que...

Hey, I am a new user of OpenSees. I have learn the software for a couple of days by reading the Command manual and those examples on the website. My question is those items in the manual are just providing simple descriptions of commands. What should I do if I want get more details about the commend...