FEA Studies for the Shell A Thin Wall Region:• Run #1: Original run having E=193 GPa

• Run #2: Modify E of shell A by a thickness ratio of 1.18/1.5. The E of shell A become 152 GPa. (Note: The actual model shell thickness is 1.375”)

• Run #3: E’s of shells B and C are 145 GPa, the value given by the specification. By modifying the thickness ratio of 1.05/1.375 for the shell A, the E of shell A becomes 111 GPa

• Run #4: E of shell is 145 GPa except in the shell A thin wall regions, where E=111 GPa

• Run #5: All shells having E=145 GPa, the value given by the specification.

• Run #6: E of shell is 145 GPa except in the shell A thin wall regions, where E=124 GPa based on thickness ratio of 1.18/1.375.

• Run #7: E of shell is 145 GPa except in the shell A thin wall regions, where E=137 GPa based on thickness ratio of 1.30/1.375

Stresses in Shell Type A for Run No. 1- E=193 GPa

Stress Plot up to 120MPa

Stresses in Shell Type A for Run No. 2 - E(A)=152 GPa, E(B&C)=193 GPa

Stress Plot up to 110MPa

Stresses in Shell Type A for Run No. 3 - E(A)=111 GPa, E(B&C)=145 GPa

Stress Plot up to 110MPa

Modulus of Elasticity in Shell Type A for Run No. 4, No. 6 and No.7

Right ViewLeft View

In the pink regions, E = 145 GPa

In the brown regions, E=111 GPa

Stresses in Shell Type A for Run No. 4 - E=145 GPa except E(thin wall region)=111 GPa

Stress Plot up to 120MPa

Stresses in Shell Type A for Run No. 5- E=145 GPa

Stresses in Shell Type A for Run No. 6 - E=145 GPa except E(thin wall region)=124 GPa

Stresses in Shell Type A for Run No. 7 - E=145 GPa except E(thin wall region)=137 GPa

Top View

Axial Stresses in Modular Coils for Run No. 1 - E=193 GPa

Coil Type A

Top View

Axial Stresses in Modular Coils for Run No. 2 - E=(B&C)193 GPa, E(A)=152 GPa

Coil Type A

Top View

Axial Stresses in Modular Coils for Run No. 3 - E=(B&C)145 GPa, E(A)=111 GPa

Coil Type A

Axial Stresses in Modular Coils for Run No. 4 - E=145 GPa except E(thin wall region)=111 GPa

Top View

Coil Type A

Axial Stresses in Modular Coils for Run No. 5 - E=145 GPa

Coil Type A

Axial Stresses in Modular Coils for Run No. 6 - E=145 GPa except E(thin wall region)=124 GPa

Coil Type A

Axial Stresses in Modular Coils for Run No. 7 - E=145 GPa except E(thin wall region)=137 GPa

Coil Type A

Summary:

Shell Type A Coil Type A All Coils

Max. Disp. Max. Seqv. Max. Disp. Max. Sz. Max. Disp. Max. Sz

(mm) (MPa) (mm) (MPa) (mm) (MPa)

Run #1 0.980 168 1.246 239 2.711 239

Run #2 1.184 159 1.451 244 2.816 244

Run #3 1.434 152 1.837 256 3.019 256

Run #4 1.168 161 1.517 248 2.971 248

Run #5 1.170 160 1.513 248 2.934 248

Run #6 1.169 161 1.516 249 2.984 249

Run #7 1.170 161 1.515 248 2.997 248