Search found 103 matches

by kengawk
Fri Aug 12, 2011 4:11 am
Forum: OpenSees.exe Users
Topic: how to use load control and displacement contol
Replies: 4
Views: 1458

Re: how to use load control and displacement contol

Thanks, Vesna! yeah,I wanna simulate a test with variable vertical load and lateral displacement. foreach Vstep $ivstep Dstep $iDstep {.... ...loadcontrol ....analyze.... ...records ...displacement control ....nanlyze the problem is that it only records no hysteresis loops but a linear line. maybe t...
by kengawk
Thu Aug 11, 2011 7:31 am
Forum: OpenSees.exe Users
Topic: how to use load control and displacement contol
Replies: 4
Views: 1458

how to use load control and displacement contol

when simulate the test with vertical load control and lateral displacement control.

it seems it cannot be simulated directly?
by kengawk
Thu Aug 11, 2011 7:29 am
Forum: OpenSees.exe Users
Topic: how can I decrease the displacement step cotrol automaticall
Replies: 2
Views: 867

how can I decrease the displacement step cotrol automaticall

I am trying to decrease the step size automatically when solving failed.

but the variable cannot be changed in each loop.

it seems the only ways is create steping size file for that?
by kengawk
Wed Aug 10, 2011 7:30 am
Forum: OpenSees.exe Users
Topic: why Rectangular section is more difficult to calculate
Replies: 2
Views: 931

why Rectangular section is more difficult to calculate

it seems that rectangualar section is more difficult to calculate than circular section during hysteresis analysis? Of course,it's not the essential reason,but why? and I cannot solve the rectangular section when I change the materials from concrete01 to concrete04. WARNING - ForceBeamColumn2d::upda...
by kengawk
Wed Aug 10, 2011 7:02 am
Forum: Useful Scripts.
Topic: any one uses navigator matlab code????
Replies: 6
Views: 15072

Re: any one uses navigator matlab code????

a matlab-based pro and post processing interface program programmed by Andreas Schellenberg and Tony Yang
check this link
http://peer.berkeley.edu/OpenSeesNavigator/
by kengawk
Mon Aug 08, 2011 9:06 pm
Forum: OpenSees.exe Users
Topic: recording stressstrain is empty, why?
Replies: 7
Views: 2587

Re: recording stressstrain is empty, why?

of course, I used wipe so that it can make same data length.

I don't know why...
by kengawk
Mon Aug 08, 2011 7:29 am
Forum: OpenSees.exe Users
Topic: recording stressstrain is empty, why?
Replies: 7
Views: 2587

Re: recording stressstrain is empty, why?

I met the same problem with rectangular section, while I can get the stress and strain from circular section.

the file is empty...why?
by kengawk
Wed Aug 03, 2011 5:38 am
Forum: Useful Scripts.
Topic: Plotting & Checking fiber sections in Matlab
Replies: 8
Views: 26562

Re: Plotting & Checking fiber sections in Matlab

thanks!
the scripts are very useful to visualize the os sections!
by kengawk
Thu Jul 21, 2011 3:30 am
Forum: OpenSees.exe Users
Topic: modal pushover
Replies: 7
Views: 5561

Re: modal pushover

I believe you could use the same model for both nonlinear static analysis and dynamics analysis.
by kengawk
Sat Jul 16, 2011 5:04 am
Forum: OpenSees.exe Users
Topic: Gmsh2OpenSEES
Replies: 0
Views: 856

Gmsh2OpenSEES

does anyone use it in windows system? Gmsh is a general purpose finite element (FEM( 2D/3D mesh generator with post-processing capabilities and an intuitive GUI based interface. OpenSEES, is an open-source finite element library with main emphasis in civil engineering applications. Gmsh lacks a FEM ...
by kengawk
Thu Jul 14, 2011 9:39 pm
Forum: Documentation
Topic: Concrete03
Replies: 1
Views: 2059

Re: Concrete03

yeah,I cannot find concrete03 in version 2.3.
by kengawk
Wed Jul 13, 2011 5:25 am
Forum: Useful Scripts.
Topic: beamwithhinge element example
Replies: 1
Views: 2530

Re: beamwithhinge element example

how is it going?
yeah,I meet the same problem.
maybe you could revise the tol and increase the iter.
and shorter the displacement control step.
and, the above does not work,expecially when the step is too large.
by kengawk
Mon Jul 11, 2011 5:34 am
Forum: OpenSees.exe Users
Topic: cyclic analysis
Replies: 4
Views: 1790

Re: cyclic analysis

maybe,you could disp it after wipe?
by kengawk
Mon Jul 11, 2011 5:26 am
Forum: OpenSees.exe Users
Topic: modal pushover
Replies: 7
Views: 5561

Re: modal pushover

insterested in the buckling of memebers in truss under compression?
by kengawk
Mon Jul 11, 2011 5:24 am
Forum: OpenSees.exe Users
Topic: modal pushover
Replies: 7
Views: 5561

Re: modal pushover

so...
Can you tell me how to simplify truss model into SDOF system and necessite to use modal pushover?