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Hello,

I would like to know if there is a range of values for the damage1 and damage 2 for the hysteretic material. Also, I would like to know if there is a report or a paper for this kind of material. Thanks for your help.

Cordially,
MC

Hi there,

I am trying to run a displacement control analysis using two nodes and the displacements history coming from two different files(one for each node). How can I do this? Is there an example that I can follow? I have looked in the message board and could not find it.


Thanks for your help.

Hi Frank, Greetings. I did what you said and I found these errors: 1> Cast.cpp 1>..\..\..\SRC\material\uniaxial\Cast.cpp(279): error C3861: 'fmin': identifier not found 1>..\..\..\SRC\material\uniaxial\Cast.cpp(303): error C3861: 'fmax': identifier not found 1>..\..\..\SRC\material\uniaxial\Cast.cpp...

Hi, I did an svn check for updates today and now I have this error when I try to compile OpenSees. I am using MVS 10 and windows XP. 24> VC2005errno.cpp 24> Generating Code... 24>material.lib(TclModelBuilderUniaxialMaterialCommand.obj) : error LNK2019: unresolved external symbol "void * __cdecl...

Dear all, Im trying to model a spring element and viscous element. I tried to implement two truss elements. One with elastic material and the other with viscous material. When I tried to compared the results with K*u for the elastic and C*Veloc for the viscous I get exact results for the elastic but...

# -------------------------------------------------------------------------------------------------- # SDOF system with spring and damper # all units are in kip, inch, second # # SET UP ---------------------------------------------------------------------------- wipe; # clear opensees model model ba...

Hi all,

I am modeling a spring and damper system with truss elements elastic and viscous. When I output the damper force and compared with c*veloc they are not the same.

Thanks for your help,
Lola

thanks!!!

Dear all, I am looking at the source code of the elasticbeamcolumn element. When you dont specify rho and specify the nodal mass, how does it calculates the mass matrix? const Matrix & ElasticBeam2d::getMass(void) { K.Zero(); if (rho > 0.0) { double L = theCoordTransf->getInitialLength(); double...

Dear all, I used the cvs update this morning and now I am getting this errors: 4>Linking... 24>element.lib(DispBeamColumn3d.obj) : error LNK2019: unresolved external symbol "public: int __thiscall CompositeResponse::addResponse(class Response *)" (?addResponse@CompositeResponse@@QAEHPAVRes...

msa_imeg,

your codes could really help me a lot too. I am trying to obtain those matrices as well.


thanks

Ok. The following is the general energy formulation: Ek(t)+Evd(t) +Ea(t)=Ein(t) +Est(t) where: Ek(t)=relative kinetic energy at time t and is: (1/2){(velocity transpose)}(M){(velocity)} Evd(t)=energy dissipated energy by viscous damping integral{velocity transpose)}(C){dx} Ea(t)=is the absorbed ener...

Dear all,

I want to be able to calculate the viscous energy, absorbed energy, input energy,etc. But I do not know how to either extract the damping matrix or the velocity. Is there a way to do this?

Thanks!!!

From a presentation form an University on the US. I thought something was wrong thats why asked. Thanks for your reply.

Dear all,

I have a model with nonlinear beam elements with fiber sections. when I do recorder on the nonlinear beam element for forces and deformations, what are the output that i get?

Thanks!!!!