Search found 15 matches
- Sat Aug 19, 2017 10:55 pm
- Forum: OpenSees.exe Users
- Topic: Convergence Problem in Cyclic Analysis
- Replies: 3
- Views: 4270
Re: Convergence Problem in Cyclic Analysis
hi, dear Rejina, have your question solved? I also use dispbeamcolumn and elasticbeamcolmun element to model the shear wall, but failed, could you share your solutions?
- Wed Jun 14, 2017 11:19 pm
- Forum: OpenSees.exe Users
- Topic: why the convergence of concrete02 so bad?
- Replies: 4
- Views: 4868
Re: why the convergence of concrete02 so bad?
selimgunay wrote: > Yes the larger ultimate strain will improve the convergence, but I > experience a bit difficulty in understanding the objective of exploring > Concrete02 under different conditions, because this is difficult to > isolate, convergence depends on other factors such as the reinforce...
- Wed Jun 14, 2017 6:17 pm
- Forum: OpenSees.exe Users
- Topic: why the convergence of concrete02 so bad?
- Replies: 4
- Views: 4868
Re: why the convergence of concrete02 so bad?
selimgunay wrote: > Convergence performance directly depends on the specific parameters of the > problem. What are you using Concrete02 for and what is your ultimate > strain. Could you provide the details of your section? Thank you for your reply. ①I try to see the effect of Concrete02 under differ...
- Sat Jun 10, 2017 6:55 am
- Forum: OpenSees.exe Users
- Topic: why the convergence of concrete02 so bad?
- Replies: 4
- Views: 4868
why the convergence of concrete02 so bad?
When modelling the mechanical performance of RC structural members, if the Concrete02 material is employed, the problem encountered most frequency is the convergence, one will always get "analyze failed", no matter the force based element is employed nor the displacement based element. So,...
- Sun Jul 10, 2016 6:20 am
- Forum: OpenSees.exe Users
- Topic: Concrete01 for dynamic analysis
- Replies: 2
- Views: 3002
Re: Concrete01 for dynamic analysis
fmk wrote:
> what element are you using?
nonlinear beam column element. I think maybe the change of neutral axis during the whole analysis cause the element centerline longer
> what element are you using?
nonlinear beam column element. I think maybe the change of neutral axis during the whole analysis cause the element centerline longer
- Thu Jul 07, 2016 7:12 am
- Forum: OpenSees.exe Users
- Topic: Concrete01 for dynamic analysis
- Replies: 2
- Views: 3002
Concrete01 for dynamic analysis
Hi everybody. there is a question. I use concrete01 and steel02 material to simulate a two stroy RC frame, the dynamic analysis result reveal that the axis force of the first floor column is compression but the y-direction displacement in the first floor is positive. is there anybody come across the...
- Fri Apr 08, 2016 5:02 am
- Forum: Reliability Analysis
- Topic: Problem Structure Optimization with SNOPT
- Replies: 2
- Views: 17180
Re: Problem Structure Optimization with SNOPT
I have encountered the same problem:
Fatal: can not run tcl file tclFileToRun.tcl in SNOPTAnalysis
toyOptFunction: SNOPTAnalysis -> update wrong!
could you paste how you deal with this problem?
Fatal: can not run tcl file tclFileToRun.tcl in SNOPTAnalysis
toyOptFunction: SNOPTAnalysis -> update wrong!
could you paste how you deal with this problem?
- Mon Aug 03, 2015 6:42 am
- Forum: OpenSees.exe Users
- Topic: How to model RC shear wall?
- Replies: 2
- Views: 3158
Re: How to model RC shear wall?
dear miranc, which material did you use to simulate concrete?
- Mon Aug 03, 2015 6:37 am
- Forum: OpenSees.exe Users
- Topic: Can rigidDiaphragm and truss element work together?
- Replies: 4
- Views: 4273
Re: Can rigidDiaphragm and truss element work together?
dear jpc, which element did you use to simulate shear wall?
- Tue Mar 31, 2015 4:54 pm
- Forum: OpenSees.exe Users
- Topic: How Opensees deal with equation of motion
- Replies: 3
- Views: 3349
Re: How Opensees deal with equation of motion
rephrased, thank you
- Mon Mar 30, 2015 5:03 pm
- Forum: OpenSees.exe Users
- Topic: How Opensees deal with equation of motion
- Replies: 3
- Views: 3349
How Opensees deal with equation of motion
# -ndm 2 -ndf 3 cantilever O --> m node 3 | | | | O --> m node 2 (When modeling in opensees, only the horizontal DOFs have mass, m; element: beam-column element ) | | | | _|__ node 1 //// When doing the dynamic analysis, the equation of motion can be written as below: Ma+Cv+Kd=-MAg then, for a 2 dim...
- Mon Mar 23, 2015 9:42 pm
- Forum: Documentation
- Topic: Theoritical Implementation of Rigid diaphragm
- Replies: 5
- Views: 9357
Re: Theoritical Implementation of Rigid diaphragm
Could nodeReaction get a force from the master node that rigidDiaphragm using?
- Mon Mar 23, 2015 3:53 am
- Forum: OpenSees.exe Users
- Topic: Something about rigidDiaphragm and nodeReaction
- Replies: 1
- Views: 2146
Something about rigidDiaphragm and nodeReaction
Could someone tell me that when the command nodeReaction recorder a force?
When rigidDiaphragm is used, if displacementControl is used, I can get a force from the rigid node using nodeReaction or reaction, but when the LoadControl is used I got zero.
Could anyone can tell when nodeReaction works?
When rigidDiaphragm is used, if displacementControl is used, I can get a force from the rigid node using nodeReaction or reaction, but when the LoadControl is used I got zero.
Could anyone can tell when nodeReaction works?
- Wed Nov 13, 2013 5:59 pm
- Forum: OpenSees.exe Users
- Topic: Seismic Base Isolation System
- Replies: 5
- Views: 7012
Re: Seismic Base Isolation System
dear fmk when i use the KikuchiBearing, there exists a warning, but i do not know why. I only use the example tcl supplied by opensees at http://opensees.berkeley.edu/wiki/index.php/KikuchiBearing_Element.(KikuchiBearing_Sample.tcl) WARNING KikuchiBearing::setUp() - element: 1 ignoring nodes and usi...
- Tue Nov 12, 2013 6:51 pm
- Forum: OpenSees.exe Users
- Topic: WARNING BandGenLinLapackSolver::solve() -LAPACK routine retu
- Replies: 16
- Views: 15736
Re: WARNING BandGenLinLapackSolver::solve() -LAPACK routine
I have a question, do Opensees have any command to simulate the 3D isolate building with Rubber isolation bearing?
I found that in Opensees, there exist a command that can simulate 2D isolate building with Rubber isolation bearing?
Hope for your reply
I found that in Opensees, there exist a command that can simulate 2D isolate building with Rubber isolation bearing?
Hope for your reply