sPHENIX discussion of the superconducting solenoid

["Yip, Kin" <kinyip AT bnl.gov>]

Hi Jon,

 

Attached I show you the stresses on the inner Left Wall and inner North Wall of the Full-Field-Test configuration.

The (net) stresses are always pointed towards the coil, even though I didn’t show the coil in the plot of the Left wall.  

And though the contour of stresses shown on the North Wall were drawn on the outside of the wall, they were really

pointed to the inside ( the –ve sign on the Integral, near the left-bottom corner, indicated that ).

There are stresses on the outside but they are much smaller.  

 

Wuzheng has provided a macro to calculate stress/force using “Maxwell Stress” and I’ve asked him ~100 questions

before I feel comfortable and gradually confident in what I’m doing.   The North/South walls are the easiest to deal with

as they’re just two flat plates and the other surfaces are more difficult …

 

I can give you a lot of numbers (of the contours) if you like ….. 

 

Kin

 

From: Kin Yip [mailto:kinyip AT bnl.gov]
Sent: Wednesday, June 29, 2016 12:38 PM
To: Hock, Jonathan <jhock AT bnl.gov>
Subject: Any use to you ?

 

Hi,

After working with Wuzheng Meng for a while, I can easily produce the force distribution (using Wuzheng's old result/model)
on the North/South pole (end caps) as the surfaces/planes are simple.

I can do so similarly for the surfaces on the Left/Right (side) though it'd be slightly more complicated as the structure is
more complicated.

Are you still interested in the force distribution ???

Kin

Attachment: LeftWall_inner.jpeg
Description: LeftWall_inner.jpeg

Attachment: NorthWall_inner.jpeg
Description: NorthWall_inner.jpeg