link modelling

03-Analytical/modelling capabilities
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mohamed
Posts: 4
Joined: 06 Oct 2008, 16:51

link modelling

Post by mohamed »

I have a problem when using the link modelling to model a vertical shear link having two springs( one rotational and one translational).
The program asks about the six degrees of freedom (F1,F2,F3,M1,M2,M3). In my case I put the values of the stiffness of F1,F2,M1,M3 big values and used the linear symmetric type, and I used the bilinear kinematic type in case of F3,M2 beacause it is close to the hysteretic behavior of the shear link.
The problem is that the program doesn't consider the shear link even using any type ( bilinear kinematic or any other type) and even using any parameters( I tried to put a very small value to the stiffness and then putting a very big value, THE SAME RESULTS.
So what's the problem ?
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seismosoft
Posts: 1271
Joined: 06 Jul 2007, 04:55

Re: link modelling

Post by seismosoft »

Apologies for not having responded yet to this issue. We are currently trying to deal with a backlog of issues that is delaying us a bit. We will look into this matter as soon as possible. Renewed apologies.

SeismoSoft Support
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seismosoft
Posts: 1271
Joined: 06 Jul 2007, 04:55

Re: link modelling

Post by seismosoft »

Please accept our apologies for the extremely long delay in responding; probably this reply of ours is now even too late. In any case, we finally did find some time to look into your model, and seem to have the impression that the shear links are not properly connected to the remaining of the structure (this becomes apparent when one follows the deformed shaped whilst running the analysis); e.g. link 1 seems to be connected to a certain node ‘n25’ that is then not connected to the rest of the structure, etc etc. You could perhaps therefore check those link-frame connections again?

Renewed apologies for the delay,

SeismoSoft Support
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