The OpenSees Community

it's up to you and what you want from analysis.

most probably the mass source in two programs are different. please apply sigma (pAL/2) to your nodal mass in opensees.

Hi

i want to learn C++ in order to change the source of some algorithms in opensees. there are many references related to C++. in your opinion, what is the best reference for a civil engineer?

is your model a bridge?

Iman Mansouri
-----------------
Univ. of Kerman
Iran

Hi Nahid

It may be that the nonlinear effects are not very strong for your model. I suggest that increase the magnitude of your target displacement and then compare the results.

Iman Mansouri
-----------------
Univ. of Kerman
Iran

I think you need to do a post-process step. You can use stressStrain as a argument of “recorder element”, draw the stress-strain curve, and see that material nonlinearity has been reached or not.
Any opinion?

If Kinit then it is clear that the stiffness will not be updated If Ktangent then the stiffness will be updated (there is a choice which stiffness to use).

Hi all

Can we use “model BasicBuilder” command several times in a script? We have a truss which its supports are beam-column elements.

Nahid
You are using DisplacementControl integrator which means the control of displacement is set up by user and the output denotes force.
Your loading probably has a problem. Please send your script.

Dear vesna

You modeled example 5.4 from Prof. Chopra's book. When I run your script, opensees doesn’t give any error message. But output files are empty. I use opensees 2.2.2. would you please tell me what the problem is?

Thank you.

Dear Dr. McKenna,

would you please guide me?

Hi, I want to change the opensees source. For example, in http://opensees.berkeley.edu/WebSVN/listing.php?repname=OpenSees&path=%2Ftrunk%2FSRC there are many files. which of them should be gotten? If all files are required, how can we download them together (is there zip format)? It is very time-con...

Dear Prof. McKenna,

You put your dissertation in one of previous topics: http://opensees.berkeley.edu/community/ ... php?t=6683
Unfortunately, it is not possible to download it.
Would you plz put it again?

Thank you.

Hi,

Is there an element or command which can do progressive collapse in opensees?

tnx.

Hi,
Thank you for your attention.
As a user I need some example for modeling of bridge.