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Re: Modeling of Cable stays

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First of all, you need to know SAP 2000 Nonlinear is really not a good
software in modelling or doing analysis of cables. Personally, I have just
come accross the same problem a few weeks ago. Anyways, hope the followings
can help you.

1> DEFINE-->NLLINK PROPERTIES, where you choose HOOK besides the icon TYPE.
Also you need to define all the properties of the cables, such as weight,
mass etc. If you want the cable to take tension only, under DIRECTIONAL
PROPERTIES, you need to click U1 and NONLINEAR and defone the stiffness of
cable by clicking MODIFY/SHOW FOR U1.

2> DRAW--> DRAW NLLINK ELEMENT, where you draw the cables in the proper
position in the structure.

3> Highlight the element you just draw and ASSIGN--> NLLINK

4> Because these nonlinear element are valid in TIME HISTORY CASES only,
which means if you run the design in STATIC LOAD CASES as normal, it will
not show the cable (tension) force. So you need to define the TIME HISTORY
CASES under DEFINE. So, when you read the output, you will see the cable
only taking tansion.


Enny


----- Original Message -----
From: Jos?Vel嫳quez <josemvv(--nospam--at)LatinMail.com>
To: <seaint(--nospam--at)seaint.org>
Sent: Wednesday, September 06, 2000 10:36 PM
Subject: Modeling of Cable stays


> Dear friends,
>
> Can anybody please tell me how to model the cable elements as a hook
element (tension only) in the SAP2000. As well as I know it is the only way
to do that, and I don't have another software. The problem is that SAP2000
doesn't take into account the large deformation and non-linear behavior of
cables. Thanks
>
> Jos?Vel嫳quez
>
>
> _________________________________________________________
> http://www.latinmail.com.  Gratuito, latino y en espa隳l.
>
>
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