Seismosoft | Earthquake Engineering Solutions

I have a simple RC beam under a vertical load in the middle span. This load is a pushover load.
I have two problem with my model in pushover analysis:

1) when I want to see discretization of my sections, the view is incorrect:
https://ibb.co/ckczOFhe
I create the model again, but the problem was remained.

2) In analysis, reinforcement was reached for yield, the concrete was reached for cover, but the analysis doesn't complete and it was stopped after concrete reached to strain 0.0035 for cover. It doesn't reach to the final strain for reinforcement and also for core concrete. The error message was "Unable to apply the entire phase load. Phase terminated'' for fbd_Tol and also fbd.Inv. I also see your video for solving this problem, but changing the values of the setting or other solutions doesn't work. I think that it may be a bog, because I see other new post in the forum that they had similar problems for RC structures or elements. I check all of my details for element such as materials, unit, load,... . It was mention that I used infrmFB and the beam should be reach to the final non-linear behavior, but it doesn't.

Could you please help me for this two problem?

Is there anyone to help me? I don't know how should I solve these two problems.

The link that you provided is not accessible and we cannot really understand what you mean with your first point.
Regarding the convergence problems that you face, can it be that you are using too many infrmFB elements to model your beam? Also check that your modelling is correct, e.g. you are not applying unrealistically large forces.

Seismosoft Support

Sorry for bad link. Please see and check the "error in view discretization" by the following link. Actually, I use SiesmoStruct 2016-6 the latest version:

http://wikisend.com/download/694976/Capture.JPG

Capture.JPG

or

http://wikisend.com/download/898174/Capture0.JPG

Capture0.JPG

Indeed, there seems to be a problem with the program here, can you please send the input file to support@seismosoft.com?
Note however that the bug seems to be with the display of the section discretization ONLY. The discretization for analytical purposes is done elsewhere in the code and is not affected by this bug.

Seismosoft Support

Thank you for your response.
I will send you soon. I think that the current version should be check by seismosoft. I created several models for example beam and column for verification. The program didn't assign all of the load and it was stopped for both static time history or for push over analysis. I say it before in the forum but every time, the support team say to me that my load is very bigger than the capacity of the elements. It is not true because they were based on published literatures with experimental test programs. However, seismostruct is my favorite analytical tool and I want to use it in my works.
Do you check the program for your verification reports by the latest version of seismostruct? I tried to run the example of chapter 4 , Ch4-joint-03 by it, but there is error log!!!! :
Errors detected in Classes Module:

Errors detected in Classes Module:

Not adequate section fibres for section BEAM_A
...
Not adequate section fibres for section BEAM_B
...
Not adequate section fibres for section COLUMN_A
...
Not adequate section fibres for section COLUMN_B
...

I really confused. I am trying to do a very hard study on my thesis but with this problems, how should I use the program for my works without worrying?. They are warning for the future analysis on my work and I'm not sure that my results will true or not.

Dear sem.ma,

Could you please inform us about the version you are using?
I checked the View discretization module and could not reproduce the reported error. I also checked the Ch4-joint-03.spf and the analysis ran successfully without receiving any of the reported messages.

SeismoStruct 2016 has been checked for all the models of the Verification Report. You may check the Verification Report document, where all the results have been updated for the SeismoStruct 2016 version.

SeismoStruct has been used and tested for many years by thousands users. Of course, there might be some minor bugs at some versions, that's why we try every day to improve Seismosoft's applications.

sem.ma hi,

SeismoStruct has been used by thousands of users worldwide during the last 15 years and we believe it is adequately verified. Further, it has been checked against dozens of experimental tests and it was found extremely accurate in predicting the highly inelastic response (see the verification report of the program in: "http://www.seismosoft.com/Public/Editor ... Models.zip").
From the error message the you get, it seems that you reduced the number of fibres of your members in the element classes module (or increased the reinforcing rebars), but the error message does not appear with the original files that come with the SeismoStruct installation.

If however you worry about the accuracy of the program, maybe you should change to another software. No hard feelings.

Seismosoft Support

Thank you so much for your description. It was very helpful to me.
Exactly, I don't know what is the problem. I didn't change any for RC-Joint of your verification report. I used the latest version release 6 and downloaded January, 2017. I reinstall the program but the error was remained. However, I think the new version 2017 was a very good software. Could you please let me to know that when it will be published? Thanks again for your answer and help.

Dear sem.ma,

Could you please download the SeismoStruct Verification Report models from http://www.seismosoft.com/seismostruct-documentation and let us know if you still get the reported message?

SeismoStruct 2017 will be published after this summer.