Search found 8 matches
- Wed Apr 03, 2024 7:20 pm
- Forum: OpenSees.exe Users
- Topic: Axial force of column section is very small. Why?
- Replies: 2
- Views: 2849
Re: Axial force of column section is very small. Why?
Thank you very much! I will change the element type and try again.
- Sat Feb 24, 2024 12:43 am
- Forum: OpenSees.exe Users
- Topic: Axial force of column section is very small. Why?
- Replies: 2
- Views: 2849
Axial force of column section is very small. Why?
Hello everyone, I'm trying to do a pushover analysis on a 3 storty 3 bay 2D RC frame with fiber section. The results of pushover is very strange. 1. The axial force in the bottom section of the column is very small only 12726.2N, but the nodal axial force at the same position is 235068N 2. I got lar...
- Sat Mar 25, 2023 3:25 am
- Forum: OpenSees.exe Users
- Topic: Add more elements in the model but get smaller results. Why?
- Replies: 3
- Views: 2040
Re: Add more elements in the model but get smaller results. Why?
Thank you very much!
- Fri Mar 24, 2023 2:20 am
- Forum: OpenSees.exe Users
- Topic: Add more elements in the model but get smaller results. Why?
- Replies: 3
- Views: 2040
Add more elements in the model but get smaller results. Why?
I built a 2D RC frame. At first, the model was built 2 nodes per beam/column (1 element for 1 beam/column). The model runs well and everything was fine. Then I added more elements in the model (1 beam/column divided into 5 element) because I want to define different sections in the beam/column. The ...
- Tue Feb 28, 2023 1:37 am
- Forum: OpenSees.exe Users
- Topic: Time history analysis got same result with different model
- Replies: 3
- Views: 2499
Re: Time history analysis got same result with different model
Thank you very much for replying! I did try stronger ground motion, but still got same result
- Mon Feb 27, 2023 3:51 am
- Forum: OpenSees.exe Users
- Topic: Time history analysis got same result with different model
- Replies: 3
- Views: 2499
Time history analysis got same result with different model
I built a 2d 3 story 2 bay RC frame. Then I run the time history analysis. The model runs good, everything seems fine. But then, I reinforced the structure with extra FRP materials and run the time history analysis, I got the same results as the un-reinforced model. At first I thought was the gravit...
- Mon Oct 31, 2022 8:16 pm
- Forum: OpenSees.exe Users
- Topic: Question on using rigid diaphragm for a RC frame with fiber sections
- Replies: 3
- Views: 3880
Re: Question on using rigid diaphragm for a RC frame with fiber sections
Dear Zhi
I meet the same problem as you do. The use of equalDOF would lead to inrealistic axial force and moment in beam when using the nonlinear element (here is the ref: https://opensees.berkeley.edu/wiki/inde ... nsequences). I also wonder have you manage to solve question 1?
I meet the same problem as you do. The use of equalDOF would lead to inrealistic axial force and moment in beam when using the nonlinear element (here is the ref: https://opensees.berkeley.edu/wiki/inde ... nsequences). I also wonder have you manage to solve question 1?
- Mon Oct 31, 2022 5:40 am
- Forum: OpenSees.exe Users
- Topic: Problem related to equalDOF in 2D structure model
- Replies: 0
- Views: 9762
Problem related to equalDOF in 2D structure model
For a 3 storied 1 bay 2d structure model, I simulated the effect of Diaphragms by using the command equalDOF. But it arouse the problem of inrealisitic axial force and moment in the beam. So I'm wondering how should I do to simulate the the effect of Diaphragm, withou using the command equalDOF. Tha...