Search found 9 matches

by limaochang
Wed Apr 14, 2021 6:53 pm
Forum: OpenSees.exe Users
Topic: How to simulate a brace used in the frame?
Replies: 0
Views: 509

How to simulate a brace used in the frame?

Dear all I am simulating a brige bent retrofitted with a self-centring brace.But I don't know how to model the SCB in the brige bent.I have tried to use tuss element to model SCB,but this method doesn't work.And here is my model code. model BasicBuilder -ndm 2 -ndf 3 #L column node 1 -1300 0 node 2 ...
by limaochang
Sun Sep 20, 2020 11:14 pm
Forum: OpenSees.exe Users
Topic: problem about flatsliderbearing
Replies: 0
Views: 526

problem about flatsliderbearing

model BasicBuilder -ndm 2 -ndf 3 node 1 +0.000000E+00 +0.000000E+00 -ndf 3 node 2 +0.000000E+00 +0.000000E+00 -ndf 3 fix 1 1 1 1 fix 2 0 0 1 uniaxialMaterial ElasticPP 1 +1.580000E+03 +2.000000E-03 -2.000000E-03 +0.000000E+00 uniaxialMaterial Elastic 2 0 0 frictionModel VelPressureDep 1 0.085 0.163 ...
by limaochang
Sun Sep 20, 2020 10:49 pm
Forum: OpenSees.exe Users
Topic: Need help!error flog:-3
Replies: 2
Views: 764

Re: Need help!error flog:-3

mhscott wrote:
Thu Sep 17, 2020 6:43 am
There is an error somewhere in your section definition. Try elastic materials and draw out the fibers and back out the process until you find the error.
Thanks for your suggestion,it's very helpful!
by limaochang
Thu Sep 17, 2020 12:08 am
Forum: OpenSees.exe Users
Topic: Need help!error flog:-3
Replies: 2
Views: 764

Need help!error flog:-3

This is my model code: model BasicBuilder -ndm 2 -ndf 3 node 1 -1.300000E+03 +0.000000E+00 -ndf 3 node 2 +1.300000E+03 +0.000000E+00 -ndf 3 node 3 -1.300000E+03 +1.600000E+03 -ndf 3 node 4 +1.300000E+03 +1.600000E+03 -ndf 3 node 5 -1.300000E+03 +1.700000E+03 -ndf 3 node 6 +1.300000E+03 +1.700000E+03...
by limaochang
Wed Sep 16, 2020 5:37 pm
Forum: OpenSees.exe Users
Topic: problems of modal analysis
Replies: 5
Views: 1178

Re: problems of modal analysis

mhscott wrote:
Wed Sep 16, 2020 6:25 am
Regardless, use constraints Transformation as Selim suggested.
Thank you !I will try.
by limaochang
Tue Sep 15, 2020 11:48 pm
Forum: OpenSees.exe Users
Topic: problems of modal analysis
Replies: 5
Views: 1178

Re: problems of modal analysis

selimgunay wrote:
Tue Sep 15, 2020 10:16 pm
You may need to use constraints Transformation.

Are you using equaldof, rigid diaphragm or similar multi-dof constraints?
thanks for your suggestion,actually I am using rigid links to simulate the connection between supscture and bearing.
by limaochang
Tue Sep 15, 2020 11:38 pm
Forum: OpenSees.exe Users
Topic: problems of modal analysis
Replies: 5
Views: 1178

Re: problems of modal analysis

thanks for your suggestion,actually I am using rigid links to simulate the connection between supscture and bearing.
by limaochang
Tue Sep 15, 2020 7:10 pm
Forum: OpenSees.exe Users
Topic: analysis of four span continuous beam bridge
Replies: 2
Views: 878

analysis of four span continuous beam bridge

Hello,recently I am modeling a four span continuous beam bridge,but I just start learning opensees,when I run the analysis,some errors have appeared,and here is my code of this model,please help me fix the code ,thank you! model BasicBuilder -ndm 3 -ndf 6 # Node tag xCrd yCrd zCrd ndf node 1 +0.0000...
by limaochang
Tue Sep 15, 2020 6:42 pm
Forum: OpenSees.exe Users
Topic: problems of modal analysis
Replies: 5
Views: 1178

problems of modal analysis

Hello,I am building a model of four span continuous beam bridge recently.When I run the analysis of eigen,some errors has appeared. I have put my tcl.file here,can you give me some suggestions of this model, tank you ! OpenSees > # modify2.tcl OpenSees > logFile "modify2.log" OpenSees > set systemTi...