NSTX outer TF leg analysis (with radius rods and VV added)

*Full 360º model and VV added.

*Al blocks connected to umbrella structure

*totally 24 radius rods added: 12 upper and 12 lower.

*cases with symm and asym PF curr are studied

*welded ring: 2.8”x2.8” rect solidRadius rod: 2”x2” rect solidRadius rod supt: 2”x2” rect solid

Totally 24 radius rods added (12

upper and 12 lower)

Symm:Asym:

Radius rods supt struct

1. welded ring (2.8x2.8” rect solid), radius rods (2”x2”), radius rods supt struct (2”x2”)

Symm PF curr: coil theta displacement (mm)

In previous result, max uy is ~4mm. Now max uy is 7.8mm. It seems 2”x2” radius rods not strong enough and umbrella structure deform more. I am increasing the thickness of

radius rods to 3”x3”

Asym PF curr: coil theta displacement (mm)

16mm

1. welded ring (2.8x2.8” rect solid), radius rods (2”x2”), radius rods supt struct (2”x2”)

Symm PF curr: VV stress (Pa)

Asym PF curr: VV stress (Pa)

Max 719MPa (104.3ksi)

At the biggest arch

Max 775MPa (112.4ksi)

At the biggest arch

1. welded ring (2.8x2.8” rect solid), radius rods (2”x2”), radius rods supt struct (2”x2”)

Symm PF curr: standard arch stress (300MPa, 43.5ksi)

Asym PF curr: standard arch stress (150MPa, 21.8ksi)

1. welded ring (2.8x2.8” rect solid), radius rods (2”x2”), radius rods supt struct (2”x2”)

Symm PF curr: Al. block area stress (519MPa, 75.3ksi)

Asym PF curr: Al. block area stress (487MPa, 70.6ksi)

1. welded ring (2.8x2.8” rect solid), radius rods (2”x2”), radius rods supt struct (2”x2”)

Symm PF curr: Port area stress (411MPa, 59.6ksi)

Asym PF curr: Port area stress (404MPa, 58.6ksi)

1. welded ring (2.8x2.8” rect solid), radius rods (2”x2”), radius rods supt struct (2”x2”)

Symm PF curr: coil stress (Pa)

Asym PF curr: coil stress (Pa)

Max 177MPa (25.7ksi)

At the connection between coil and

ring

Max 166MPa (24.1ksi)

At the connection between coil and

ring

1. welded ring (2.8x2.8” rect solid), radius rods (2”x2”), radius rods supt struct (2”x2”)

Symm PF curr: ring stress (Pa)

Asym PF curr: ring stress (Pa)

Max 185MPa (26.8ksi)

At the connection between coil and

ring

Max 203MPa (29.4ksi)

At the connection between coil and

ring

1. welded ring (2.8x2.8” rect solid), radius rods (2”x2”), radius rods supt struct (2”x2”)

Symm PF curr: radius rod load (N)

Max: 44.5KN (10 klbs)Min: 18.4KN (4.1 klbs)

Asym PF curr: radius rod load (N)

Max: 49.2KN (11.1klbs)Min: 10.7KN (2.4klbs)