Hi
I'm modeling a 2D 4-storey, 3-Bay steel structure frame with X-Braces in the middle span. All the braces and their adjacent beams should be pinned, not being able to carry any fix end moments. How could I release moments for these aforementioned elements? As I know all the joints between different elements carry fix end moments. I just want these elements not to carry any end moments induced by element chord rotations.
How to model pinned braces&beams?
-
ricardomonteiro
- Posts: 37
- Joined: 15 Sep 2010, 11:40
Re: How to model pinned braces&beams?
Hi Mostafa,
In SeismoStruct you have the possibility to use the truss elements, which, according to the help system you can easily access, can be employed in those cases where there is a need to introduce members that work in their axial direction only (e.g. horizontal or vertical braces, steel trusses, etc).
Will these be suitable for what you intend to do?
Ricardo
In SeismoStruct you have the possibility to use the truss elements, which, according to the help system you can easily access, can be employed in those cases where there is a need to introduce members that work in their axial direction only (e.g. horizontal or vertical braces, steel trusses, etc).
Will these be suitable for what you intend to do?
Ricardo
-
kalmithkush
- Posts: 8
- Joined: 07 Jul 2010, 12:24
Re: How to model pinned braces&beams?
Hi Mostafa,
As Ricardo pointed out, you can use the truss element in modelling of braces. However, if you are interested in modelling of post buckling behaviour of braces, then you can use two inelastic forced-based frame elements (infrmFB) to model single brace. In that case, you have to use the link element with very low rotational stiffness to connect a brace to the surrounding frame elements to simulate the pin ended connection of the brace.
Regards,
Kuhsan.
As Ricardo pointed out, you can use the truss element in modelling of braces. However, if you are interested in modelling of post buckling behaviour of braces, then you can use two inelastic forced-based frame elements (infrmFB) to model single brace. In that case, you have to use the link element with very low rotational stiffness to connect a brace to the surrounding frame elements to simulate the pin ended connection of the brace.
Regards,
Kuhsan.
Re: How to model pinned braces&beams?
Hi,
I am trying to model a brace member with two different types of material. Is it possible in seismostruct to model such braces. Whenever i tried it says zero diagonal zero diagonal terms encountered in those nodes. Can any one give me suggestion what to do?
Regards
I am trying to model a brace member with two different types of material. Is it possible in seismostruct to model such braces. Whenever i tried it says zero diagonal zero diagonal terms encountered in those nodes. Can any one give me suggestion what to do?
Regards
-
kalmithkush
- Posts: 8
- Joined: 07 Jul 2010, 12:24
Re: How to model pinned braces&beams?
Hi Muntarsir,
It is possible in SeismoStrut to model such a brace but, you have to check in the section list whether the required type of composite section (where you can assign different materials to different part of the section) is available or not. In the case that it is not available, SeismoStrut developers may release new version in which you can define your own composite section shape using different patches. However, you can have more information on this from SeismoStrut developers.
best regards,
Kushan
It is possible in SeismoStrut to model such a brace but, you have to check in the section list whether the required type of composite section (where you can assign different materials to different part of the section) is available or not. In the case that it is not available, SeismoStrut developers may release new version in which you can define your own composite section shape using different patches. However, you can have more information on this from SeismoStrut developers.
best regards,
Kushan