Search found 9 matches

by songlianglong
Tue May 18, 2010 4:17 pm
Forum: OpenSees.exe Users
Topic: Element with birth and dead
Replies: 5
Views: 1623

add a new element

[quote="fmk"]they are stored in the elements .. have a look at the source code .. [url] http://opensees.berkeley.edu/cgi-bin/cvsweb2.cgi/OpenSees/SRC/element/ [/url][/quote] i am so frustrated. i have not learned c++ so i can not understand the source code? if i want to add a new element to the doma...
by songlianglong
Mon May 17, 2010 10:41 pm
Forum: OpenSees.exe Users
Topic: Element with birth and dead
Replies: 5
Views: 1623

problem about opensees

[quote="fmk"]when you add/remove nodes, elements, constraints to/from the model the domain is flagged as hacvng changed and the analysis re-initializes itself to take this into account. the state of the other elements in the model does not change. when adding elements most (NOT ALLl) elements look a...
by songlianglong
Sat May 15, 2010 10:25 pm
Forum: OpenSees.exe Users
Topic: model construction sequence
Replies: 0
Views: 469

model construction sequence

My connection model simulated the assumed construction sequence for a moment resisting frame, where a posttensioning force is applied before a friction device is constructed. So I want to activate the friction device element after the post-tensioning force was applied to the model. how can I make th...
by songlianglong
Thu May 13, 2010 1:17 am
Forum: Soil Modelling
Topic: transformation constraints
Replies: 3
Views: 1948

transformation constraints 2

[quote="fmk"]one or the other should be fine .. just not both.[/quote]
i am confused : i used both of the commands and the transformation constraints, but my program can still run,could this happen? is the output data correct?
by songlianglong
Mon May 10, 2010 6:15 am
Forum: Soil Modelling
Topic: transformation constraints
Replies: 3
Views: 1948

transformation constraints

i want to know if i use the command below,can i use the transformation constraints?

rigidLink beam 1 2

equalDOF 2 3 1 2

thank you :P
by songlianglong
Mon May 10, 2010 6:14 am
Forum: OpenSees.exe Users
Topic: transformation constraints
Replies: 0
Views: 477

transformation constraints

i want to know if i use the command below,can i use the transformation constraints?

rigidLink beam 1 2

equalDOF 2 3 1 2

thank you :P
by songlianglong
Fri Apr 09, 2010 4:42 am
Forum: OpenSees.exe Users
Topic: Question about zeroLength curvature
Replies: 4
Views: 962

zero-length element

[quote="fmk"]when a uniaxial material is used in a zeroLength element, the material provides the relationship between global forces at the two nodes and the displacement at the nodes. when used in a fiber-section, the material provides the stress-strain relationship for a fiber at a point in the sec...
by songlianglong
Thu Apr 08, 2010 12:10 am
Forum: OpenSees.exe Users
Topic: Question about zeroLength curvature
Replies: 4
Views: 962

zero-length

[quote="fmk"]the zeroLength element takes a material which provides the force-deformation relationship .. there is no moment-curvature relationship provided, as you point out it has no length.[/quote]
the force here refer to what?
by songlianglong
Fri Mar 12, 2010 6:28 am
Forum: Useful Scripts.
Topic: We are collecting OPENSEES User-Requirements Data
Replies: 23
Views: 20914

Re: We are collecting OPENSEES User-Requirements Data

[quote="silvia"]We are collecting some Requirements Data. Please reply to this post with a list of what you, as an OpenSees USER, require of OpenSees EXAMPLES. Thank you, The OpenSees Development Team[/quote] Hi, silvia As a user I need some example for modeling of Pre-stressing Concrete Fabricated ...