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Nonlinear Analyses of Modular Coils and Shell structure for Cooldown and Modular Coil EM Loads Part 2 – Results of Clamp Assembly, Wing Bags, Poloidal Break Joints, and Flange Spacer Joints. H.M. Fan PPPL Nov. 15, 2005. FEA Model. FEA model simulates one field period.
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Nonlinear Analyses of Modular Coils and Shell structure for Cooldown and Modular Coil EM Loads
Part 2 – Results of Clamp Assembly, Wing Bags, Poloidal Break Joints, and Flange Spacer Joints
H.M. Fan
PPPL
Nov. 15, 2005
FEA Model
Right type C shell
Right type B shell
Right type A shell
Left type A shell
Left type B shell
Left type C shell
Material Properties and Loadings
• The following material properties are used:
EM Loads on Modular Coils
Top view
Side view
Top view
Contact Status of Top and Side Pads on Modular Coils
Pad locations
Pad locations
Von Mises Stresses in Clamps
Max. stress
Maximum Stresses at Clamp-Tee Interface
Contact pressure
Contact friction stress
Contact Pressure on Wing Bags at Type AShell
Left type A shell
Right type A shell
Contact Pressure on Wing Bags at Right Type BShell
Right shell type B
Contact pressure to shell type C
Contact pressure to shell type B
Contact Pressure on Wing Bags at Right Type CShell
Wing bag outside the 120° range
Wing bag between shell types B and C
Rotational image for wing bag outside the 120° range
Contact Pressures on Right Poloidal Breaks
Shell Type C
Shell Type A
Shell Type B
Contact Pressures on Left Poloidal Breaks
Shell Type C
Shell Type A
Shell Type B
Contact Shear Stresses on Poloidal Breaks
Shell Type A
Shell Type B
Shell Type C
Joint Connections for Shell Flanges and Poloidal Breaks
Shell type A
Shell type B
Shell type C
Shell type C
Stresses Patterns are Sensitive to the Shape of Flange Spacer
Original shape
Revised shape
Normal stress
Radial shear Stress
Vertical shear stress
Normal Stresses in the Toroidal Direction for All of Inboard Flange Spacer Elements
At 60°
At 40°
At 20°
At 0°
At -20°
At -40°
At -60°
Normal Stresses and Shear Stresses for theFlange Spacer Elements at 0°
Normal stress
Radial shear Stress
Vertical shear stress
Normal Stresses and Shear Stresses for theFlange Spacer Elements at 20°
Normal stress
Radial shear Stress
Vertical shear stress
Normal Stresses and Shear Stresses for theFlange Spacer Elements at 40°
Normal stress
Radial shear Stress
Vertical shear stress
Normal Stresses and Shear Stresses for theFlange Spacer Elements at 60°
Normal stress
Radial shear Stress
Vertical shear stress
No bolt connection
No bolt connection
No bolt connection
No bolt connection
At 60°
At 40°
At 20°
At 0°
Inboard Shell Flanges without Bolt Connections
More on the Stresses on the Inboard Shell Flanges Joints
Net Normal and Shear Forces at Inboard Flange Regions with No Bolt Connection
Bolt Connections at Shell Flanges and Poloidal Breaks
Partial Thread engagement
Discussion and Summary
Discussion and Summary (Continued)
Further Works
Further Works (Continued)
FEA Model and Result Data Base