[quote="fmk"]they are stored in the elements .. have a look at the source code ..
[url]
http://opensees.berkeley.edu/cgi-bin/cv ... C/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 domain during a analysis,must l use the code written by c++?
Search found 9 matches
- Tue May 18, 2010 4:17 pm
- Forum: OpenSees.exe Users
- Topic: Element with birth and dead
- Replies: 5
- Views: 5174
- Mon May 17, 2010 10:41 pm
- Forum: OpenSees.exe Users
- Topic: Element with birth and dead
- Replies: 5
- Views: 5174
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 at current nodal displacements and if non-zero, store these as initial displacements ..
just how to "store these as initial displacements .. "?
please,please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
when adding elements most (NOT ALLl) elements look at current nodal displacements and if non-zero, store these as initial displacements ..
just how to "store these as initial displacements .. "?
please,please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
- Sat May 15, 2010 10:25 pm
- Forum: OpenSees.exe Users
- Topic: model construction sequence
- Replies: 0
- Views: 1652
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 this construction sequence achieved in the opensees?
I used steel02 material to simulate the post-tensioning element,and if I do not consider the contruction sequence of the elements,the post-tensioning force would apply a initial force to the friction device element and this is not what I want.
Thank you !Very Happy
So I want to activate the friction device element after the post-tensioning force was applied to the model. how can I make this construction sequence achieved in the opensees?
I used steel02 material to simulate the post-tensioning element,and if I do not consider the contruction sequence of the elements,the post-tensioning force would apply a initial force to the friction device element and this is not what I want.
Thank you !Very Happy
- Thu May 13, 2010 1:17 am
- Forum: Soil Modelling
- Topic: transformation constraints
- Replies: 3
- Views: 4579
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?
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?
- Mon May 10, 2010 6:15 am
- Forum: Soil Modelling
- Topic: transformation constraints
- Replies: 3
- Views: 4579
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
rigidLink beam 1 2
equalDOF 2 3 1 2
thank you
- Mon May 10, 2010 6:14 am
- Forum: OpenSees.exe Users
- Topic: transformation constraints
- Replies: 0
- Views: 1666
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
rigidLink beam 1 2
equalDOF 2 3 1 2
thank you
- Fri Apr 09, 2010 4:42 am
- Forum: OpenSees.exe Users
- Topic: Question about zeroLength curvature
- Replies: 4
- Views: 4253
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 section.[/quote]
how can i get the moment-theta relationship in the section where the zerolengthsection element is defined?what is different when i get the moment-theta relationship in a sectioon of another element (such as a elastic element etc. ) is defined?
when used in a fiber-section, the material provides the stress-strain relationship for a fiber at a point in the section.[/quote]
how can i get the moment-theta relationship in the section where the zerolengthsection element is defined?what is different when i get the moment-theta relationship in a sectioon of another element (such as a elastic element etc. ) is defined?
- Thu Apr 08, 2010 12:10 am
- Forum: OpenSees.exe Users
- Topic: Question about zeroLength curvature
- Replies: 4
- Views: 4253
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?
the force here refer to what?
- Fri Mar 12, 2010 6:28 am
- Forum: Useful Scripts.
- Topic: We are collecting OPENSEES User-Requirements Data
- Replies: 27
- Views: 62081
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 Frames.
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 Frames.