Re: force on pole (fwd from Yang)

[Elton Smith <elton@jlab.org>]

---------- Forwarded message ----------
Date: Mon, 15 Dec 2008 23:26:36 -0000 (GMT)
From: yangg@physics.gla.ac.uk
To: whitey@jlab.org
Cc: jstewart@jlab.org, halld-tagger@jlab.org
Subject: Re: force on pole

Dear Tim,

    The force on a 6.3 m magnet is 240 tonnes. I passed this information to
    Jim months ago.
Cheers

yang


> Yes I was confused. The 150 tonnes was for the 3.1 m magnets. There
> would be 221 tonnes on a 6.3 m magnet from your ANSYS analysis. Yang,
> do  you have new numbers from your TOSCA analysis for the 1 piece
> magnet?
>
> Tim
>
> Tim Whitlatch wrote:
>> Hi Jim,
>>
>> This equates to about 150 tons over the 4 meters. This is what Yangs
>> original calculation showed for a 2M magnet? I am assuming his
>> analysis from 2006 was based on a 2 magnet design.
>>
>> Tim
>>
>> Jim Stewart wrote:
>>> Hi Tim
>>>
>>> I told ANSYS to compute the y component of the force on the flat
>>> surface of the TOP pole tip.
>>> The force for this ~1m long surface is -3.445e+005 N. The downstream
>>> boundary condition was placed at z=1m.
>>> Is this about what you expect?
>>>
>>> Jim