Search found 115 matches

by ismailqeshta
Sat Jun 29, 2019 4:23 am
Forum: OpenSees.exe Users
Topic: eleLoad doesn't seem to work..
Replies: 6
Views: 5722

Re: eleLoad doesn't seem to work..

Yes, I just noticed that. The load is applied at the local x-axis.
by ismailqeshta
Fri Jun 28, 2019 10:26 am
Forum: OpenSees.exe Users
Topic: eleLoad doesn't seem to work..
Replies: 6
Views: 5722

Re: eleLoad doesn't seem to work..

It is not possible. You can try to explain the problem or, if possible, copy the line of code that has the problem, and I will try to help you.
by ismailqeshta
Wed Jun 26, 2019 9:55 pm
Forum: OpenSees.exe Users
Topic: eleLoad doesn't seem to work..
Replies: 6
Views: 5722

Re: eleLoad doesn't seem to work..

Can you provide more explanation for your problem?

Anyway,

I have had a problem with eleLoad a while ago, but it ultimately worked with me:
http://opensees.berkeley.edu/community/ ... =2&t=64317
by ismailqeshta
Tue Jun 11, 2019 2:22 am
Forum: OpenSees.exe Users
Topic: ForceBeamColumn3D
Replies: 4
Views: 3997

Re: ForceBeamColumn3D

You may need to have a look at this:

https://ascelibrary.org/doi/10.1061/%28 ... 2%28244%29
by ismailqeshta
Thu May 09, 2019 8:01 am
Forum: OpenSees.exe Users
Topic: Pushover with confined concrete
Replies: 4
Views: 4224

Re: Pushover with confined concrete

ConfinedConcrete01 is based on Braga and Laterza (2006) model, while concrete 02 is based on Yassin (1994) work. Hence, they would definitely show some differences in behaviour. Regarding your period change, why don't you just test whether you run the model correctly by following the examples given ...
by ismailqeshta
Thu May 02, 2019 1:56 am
Forum: OpenSees.exe Users
Topic: Pushover with confined concrete
Replies: 4
Views: 4224

Re: Pushover with confined concrete

I have tried both FRPConfinedConcrete and ConfinedConcrete01, and they showed similar results. However, I would recommend ConfinedConcrete01, as it requires less info. It has been used in many studies over the past few years.
by ismailqeshta
Sun Apr 14, 2019 3:32 am
Forum: OpenSees.exe Users
Topic: Why are additional nodes resulting in failure + convergence
Replies: 8
Views: 6800

Re: Why are additional nodes resulting in failure + converge

You may need to check the rigidity of the beam between the two columns. It may be hard to obtain convergence if it has large rigidity. I have faced a similar issue in one of my models.
by ismailqeshta
Thu Apr 11, 2019 4:34 pm
Forum: OpenSees.exe Users
Topic: Problems with a 3D model using ZeroLengthSections
Replies: 1
Views: 2253

Re: Problems with a 3D model using ZeroLengthSections

I am not sure about the coordinates directions of your model, but I think you need to double check the fixity. You are using fix 1 0 1 1 1 1 1. Remember that you need to restrain Vy, Vz and T.
by ismailqeshta
Mon Apr 08, 2019 8:20 am
Forum: OpenSees.exe Users
Topic: Why are additional nodes resulting in failure + convergence
Replies: 8
Views: 6800

Re: Why are additional nodes resulting in failure + converge

Yes, I am currently facing a similar issue with convergence for higher intensities. I just posted a question on it recently:

http://opensees.berkeley.edu/community/ ... =2&t=65708
by ismailqeshta
Sun Apr 07, 2019 9:42 pm
Forum: OpenSees.exe Users
Topic: Why are additional nodes resulting in failure + convergence
Replies: 8
Views: 6800

Re: Why are additional nodes resulting in failure + converge

I am using Plain numberer and got differences in results (post-peak) when I used more than one element. In my case, the differences are actually in static analysis. I did not check the dynamic analysis. I am not actually sure about the source of this problem, but if you really need to model your str...
by ismailqeshta
Sun Apr 07, 2019 9:29 pm
Forum: OpenSees.exe Users
Topic: how to check the model
Replies: 2
Views: 2776

Re: how to check the model

As a beginner, I would strongly advise you to follow the OpenSees basic examples available through the link below. Have a look at them and then start coding a model or two yourself by referring to the explanation provided in each example. It can be a little hard at the beginning, but by the time you...
by ismailqeshta
Sun Apr 07, 2019 6:02 am
Forum: OpenSees.exe Users
Topic: ZeroLengthSection Element for cantilever
Replies: 3
Views: 3736

Re: ZeroLengthSection Element for cantilever

Thanks Ericson for your reply and sorry for the delay in getting back to you. The elastic section is given the normal properties of a column. I also increased the elastic section stiffness, but it still does not change the results. My model is actually in mm, tonne, sec and N. To make it easy for me...
by ismailqeshta
Sat Apr 06, 2019 2:57 am
Forum: OpenSees.exe Users
Topic: How to improve the convergence of dynamic analysis of SDOF?
Replies: 0
Views: 2026

How to improve the convergence of dynamic analysis of SDOF?

Hi, I am running a dynamic (time-history) analysis of a single degree of freedom (SDOF) model using distributed plasticity (dispBeamColumn element). I am using the below code to run my analysis. I tried to improve the convergence by using the different alternative algorithms of the analysis code of ...
by ismailqeshta
Tue Apr 02, 2019 5:31 am
Forum: OpenSees.exe Users
Topic: ZeroLengthSection Element for cantilever
Replies: 3
Views: 3736

ZeroLengthSection Element for cantilever

Hi, I am trying to model a cantilever using zero-length section elements at its both ends while the middle element is elasticBeamColum element. I would like to capture the response of cantilever based on the fiber section defined for the ZeroLengthSection element at both ends. The nodes arrangement ...