Hi everybody
How can I use parallel and series materials to make a " flag shape " material for Pre-stressed connections?
Is there other way to introduce this kind of material in OpenSees?
I did not find any material in opensees library for flag shape material.
I saw hysteric material and self centring material but non of them were according to my considered material.
please help me.
Thanks so much.
" flag shape " material
Moderators: silvia, selimgunay, Moderators
Re: " flag shape " material
Hi, Ssami:
Is it possible to get your wanted flag material by changing the parameters in the self-centering material? Is the shape of the 4th hysteresis pic what you are looking for?
Is it possible to get your wanted flag material by changing the parameters in the self-centering material? Is the shape of the 4th hysteresis pic what you are looking for?
Baozai
Re: " flag shape " material
Hi dear baozai
No, it is impossible, I can not get my wanted flag material by changing the parameters in the self-centering material.
Shape of flag material which I am looking for, is in the link of following paper (entitled "Influence of design parameters on seismic response of post-tensioned steel MRF systems" authored by Maria M. Garlock, James M. Ricles, Richard Sause), page 1040, fig. 4 :
http://www.sciencedirect.com/science/ar ... 9607002386
Sincerely appreciating your kind attention, I look forward to your instructive guidance.
Thanks so much.
No, it is impossible, I can not get my wanted flag material by changing the parameters in the self-centering material.
Shape of flag material which I am looking for, is in the link of following paper (entitled "Influence of design parameters on seismic response of post-tensioned steel MRF systems" authored by Maria M. Garlock, James M. Ricles, Richard Sause), page 1040, fig. 4 :
http://www.sciencedirect.com/science/ar ... 9607002386
Sincerely appreciating your kind attention, I look forward to your instructive guidance.
Thanks so much.
Re: " flag shape " material
Hi, Ssami:
My pleasure. From the paper, it seems the initial stiffness is super big, and the unloading part shoot even lower than the yield point. In my opinion, there are two options, one is parallel the Self-Centering with a very rigid elastic material, use this rigid material to model the initial rigid part, just to make it looks similar to the hysteresis showing in the paper. Or maybe you could contact the author to see if he did any analysis in OpenSees.
Regards.
My pleasure. From the paper, it seems the initial stiffness is super big, and the unloading part shoot even lower than the yield point. In my opinion, there are two options, one is parallel the Self-Centering with a very rigid elastic material, use this rigid material to model the initial rigid part, just to make it looks similar to the hysteresis showing in the paper. Or maybe you could contact the author to see if he did any analysis in OpenSees.
Regards.
Baozai
Re: " flag shape " material
Dear baozai
Thank you very much for your response.
To modeling my wanted flag material shown in the paper, by using parallel the Self-Centering with a very rigid elastic material, A problem occurs:
In the paper, start and end points of hysteresis curve in tension (as shown in the paper) have not same coordinate, while start and end points of hysteresis curve in SelfCentering Material, have the same coordinate. How can I make a hysteresis curve with different coordinates for it's start and end points?
I would be very thankful, if you can guide me on this issue.
Best Regards.
Thank you very much for your response.
To modeling my wanted flag material shown in the paper, by using parallel the Self-Centering with a very rigid elastic material, A problem occurs:
In the paper, start and end points of hysteresis curve in tension (as shown in the paper) have not same coordinate, while start and end points of hysteresis curve in SelfCentering Material, have the same coordinate. How can I make a hysteresis curve with different coordinates for it's start and end points?
I would be very thankful, if you can guide me on this issue.
Best Regards.
Re: " flag shape " material
Hi, Ssami: I am sorry, I also have no idea how to get the exact same flag shape in the paper.
Baozai