RE: [TCML] hoop stress in primary coil

[Nick Andrews <nicothefabulous@xxxxxxxxxxx>]

Good, I was thinking of the calcs for hoop stress on something like a steel pressure tank, which is somewhat similar, but something I have not looked at since I was in college in the 90s!

Nick A


"Suburbia is where the developer bulldozes out the trees, then names the streets after them." Bill Vaughan





> Date: Fri, 1 May 2009 08:19:00 -0500
> From: bert.hickman@xxxxxxxxxx
> To: tesla@xxxxxxxxxx
> Subject: Re: [TCML] hoop stress in primary coil
> CC: 
> 
> Hi Jim,
> 
> A very straightforward analysis of B field and resulting hoop stress 
> calculation for a simple loop can be found in section 3.3.1 of the 
> following article from MIT.
> 
> http://ocw.mit.edu/NR/rdonlyres/E23FEEB3-AAEC-434E-997B-6950DAD6A121/0/chap3.pdf
> 
> The magnetic pressure (P) is proportional to the square of the B field, 
> and the resulting hoop stress for a "thin" turn is P*(a/t), where a = 
> radius of coil, and t = thickness of the turn.
> 
> Bert
> -- 
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> 
> jimlux wrote:
> >     Anyone have a cookbook approximation kind of equation for the hoop 
> > stress in the primary? Or even, a single turn coil, given di/dt, etc.
> > 
> > Tnx
> > Jim
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