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Dear

I modeled 2-D RC resistant frame by considering soil-structure interaction. The model was subjected to nonlinear dynamic analysis. Nodes of each story were restricted in x direction by equalDof command. I used “constraints Transformationâ€

Dear all
can opensees consider large deformation effects?

Hi I considered soil-foundation-structure interaction. I modeled soil and foundation by quad element, and foundation was considered rigid. I used zeroLengthContactNTS2D element in my model for modeling slip between soil and foundation. first I did a eigenvalue analysis, and structure periods were ac...

Hi

I would know enough information about these elements that put in the new version of opensees:

1)FrictionModel
2)CoulombFriction
3)VDependentFriction, 4)VPDependentFriction
5)FlatSlider2D and 3D

Dear Dr Silvia I modeled soil-structure interaction. I model soil and foundation by quad element and elasticBeamColumn element, respectively. in ground level, I define three group elements (soil node, virtual node and foundation node) in same coordinate. virtual nodes have tow degree freedom in x an...

Dear Dr Mckenna

Is there zeroLengthContactNTS2D element that has been proposed by Professor Pedro Arduino and Roozbeh Geraili Mikola in new version Opensees (version 2.2)?

Thanks you.

Dear Dr Mckenna I contacted to Professor Pedro Arduino and Roozbeh Geraili Mikola about zeroLengthContactNTS2D element. He mentioned that the source of zeroLengthContactNTS2D element has been sent to you in order to put in new version of opensees source. When do you think that this version would be ...

Hi every body.

I am working on "Damage Index" in 2D frames. I need to calculate hysteretic energy. I obtain the force-deformation response in any section.

How can I use source code to reach my purpose?
How do I integrate the force-deformation response?

Thanks you.

Hi every body

I am studying nonlinear dynamic analysis of RC frame including soil-structure interaction(2D).
I would consider separation (uplifting) mode between soil and foundation.
How can i model this mode? which element is proper?

Thanks.

Dear silvia

I want add any file to source of opensees. How can I do this work?

Thanks.

Dear silvia

I would model soil-structure interaction (2D). I would create a rigid foundation by B*D dimension in my model.

Which element can I use for rigid foundation?

Dear Dr silvia

is there contact element in opensees?

Dear silvia I am studying nonlinear dynamic analysis of RC frame including soil-structure interaction(2D). The finite element approach is used to model the interaction system, which consists of structural frame members, soil layers, and the interface between the foundation of structure and soil. I f...

Dear Dr silvia
I would consider soil-structure interaction. I would model foundation by rigid beam. which is element proper for this modeling?

Thanks Dr silvia. I used geomTransf Linear for beam and column. This commend can be same for all elements. I don't know direction of local y and z axes in section. I studied the manual, but I didn't find the these directions. I consider shear deformation in all elements. how can I use geomTransf Lin...