Search found 10 matches

by ftong
Wed Nov 29, 2017 6:22 am
Forum: OpenSees.exe Users
Topic: Previously converged analysis failed when using Release 2.5
Replies: 2
Views: 2563

Re: Previously converged analysis failed when using Release

Hi dgale,

Thanks for your reply. I also searched for older releases and finally came to the identical version 2.5.0 (rev6477) as what you use. It works for dynamic analyses but does not work for static pushover analyses.

Thanks.
Fei.
by ftong
Tue Nov 07, 2017 11:17 am
Forum: OpenSees.exe Users
Topic: Previously converged analysis failed when using Release 2.5
Replies: 0
Views: 1619

Previously converged analysis failed when using Release 2.5

Hi everyone, I have a few analyses that were run in March 2016 and converged well. However, they failed when I run them using the identical .tcl scripts using OpenSees Release Version 2.5.0. I cannot remember the exact version that I used in March 2016. It should be the latest release by that time. ...
by ftong
Tue Oct 31, 2017 10:21 am
Forum: OpenSees.exe Users
Topic: Previously converged analysis failed when using Release 2.5
Replies: 2
Views: 2563

Previously converged analysis failed when using Release 2.5

Hi everyone, I have a few analyses that were run in March 2016 and converged well. However, they failed when I run them using the identical .tcl scripts using OpenSees Release Version 2.5.0. I cannot remember the exact version that I used in March 2016. It should be the latest release by that time. ...
by ftong
Wed Apr 27, 2016 12:01 pm
Forum: OpenSees.exe Users
Topic: uniaxialMaterial SPSW_Web_Plate
Replies: 1
Views: 1859

uniaxialMaterial SPSW_Web_Plate

Can anyone advise if the uniaxialMaterial model SPSW_Web_Plate has been implemented in OpenSees? When I tried to use it, it prompts "WARNING could not create uniaxialMaterial SPSW_Web_Plate".
Thanks
Fei
by ftong
Sat Apr 23, 2016 6:16 am
Forum: OpenSees.exe Users
Topic: Behavioural and Physical Models for Steel Plate Shear Walls
Replies: 0
Views: 1829

Behavioural and Physical Models for Steel Plate Shear Walls

Hi everyone, I am trying to model a steel plate shear wall (SPSW) assembly (boundary elements + infill plate). Could anyone please share your experiences on my following inquiries? [1] Phenomenological Model Whereas strip models are widely adopted in simulating the physical characteristics of SPSWs,...
by ftong
Mon Feb 01, 2016 8:46 am
Forum: OpenSees.exe Users
Topic: Newton and ModifiedNewton methods
Replies: 2
Views: 2860

Re: Newton and ModifiedNewton methods

Thanks Frank.
by ftong
Mon Jan 25, 2016 11:46 am
Forum: OpenSees.exe Users
Topic: Newton and ModifiedNewton methods
Replies: 2
Views: 2860

Newton and ModifiedNewton methods

Hi everyone, Can someone help clarify about the options applied to the iterative algorithms of Newton and ModifiedNewton? Newton -initial Is it the initial tangent stiffness (associated with the undeformed structure) that will be used throughout all the integration time steps and for each iterative ...
by ftong
Mon Oct 12, 2015 12:38 pm
Forum: OpenSees.exe Users
Topic: Bi-Directional Displacement-Controlled Pushover
Replies: 1
Views: 1956

Bi-Directional Displacement-Controlled Pushover

Does anyone has some idea on the following modeling demand? I'd like to conduct a displacement-controlled pushover analysis on a 3D structure. Instead of the structure's principle axes on plan that align with the global X and Z respectively, the controlled displacement need to be applied along a dia...
by ftong
Mon Jun 08, 2015 7:21 am
Forum: OpenSees.exe Users
Topic: Displacement-controlled time history analysis
Replies: 2
Views: 3302

Displacement-controlled time history analysis

Could anyone please advise if it is possible for OpenSees to conduct a time history analysis that is not excited by a ground motion acceleration but a displacement/velocity time history that is applied on selected DOF(s)? I would like to test the Viscous Damper uniaxialMaterial by doing a displaceme...
by ftong
Wed Mar 06, 2013 12:10 pm
Forum: Useful Scripts.
Topic: SectionAggregator Object
Replies: 1
Views: 3098

SectionAggregator Object

Dear Colleagues, Here is a question about SectionAggregator object. I am trying to incorporate linear elastic shear component into an already-defined fiber section that captures the axial and flexural behaviors. To my knowledge, the following scripts are to be used: section Fiber $fiberSecTag { ; # ...