Seismosoft | Earthquake Engineering Solutions

Hi, i have frame model that analysis with seismostruct 2016 version but i need to add seismic isolators that model. 2016 version there is no options with bearing elements.

I tried the open model with 2020 version then run analysis but 2020 version give an error


There is difference with hysteretic curves

Version 2016


Version 2020


How can i fix this problem?

Model files

Version 2016
https://drive.google.com/file/d/1cx7BuP ... sp=sharing

Version 2020
https://drive.google.com/file/d/12_i7km ... sp=sharing

Sorry for the picture link

I tried the open model with 2020 version then run analysis but 2020 version give an error


There is difference with hysteretic curves

Version 2016


Version 2020

The differences are relatively small and they are probably attributed to a loose convergence criterion (see instabilities in the top of the curve in v2016). With more stringent criteria you will probably get very similar response.
Seismosoft Support

Hi again, actually i want create hysteretic curve so add eartquake aceleration version 2016 and there ise 2016 hysteretic curve





And totaly same model on version 2020, only difference is convergence criteria



convergence analysis detail



Hystereric curve



Am i missing something?

The values of 0.10 for the convergence criteria are extremely loose. You should not set them larger than 1e-4. This is probably causing the disrepancies.
Seismosoft Support

seismosoft wrote: 16 Apr 2021, 13:14 The values of 0.10 for the convergence criteria are extremely loose. You should not set them larger than 1e-4. This is probably causing the disrepancies.
Seismosoft Support

Still same

We cannot know what differences there are between your v2016 and v2020 models. However, we already checked the v2016 model that you sent us, we ran it with v2016 and v2020, and the differences between them were negligible, hence there must be some difference between the models.

Seismosoft Support