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[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 t...

[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) eleme...

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...

[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 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

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

[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 ...

[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?

[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 F...