1. AWB0202071 Impact of Adding Bolts to Inner Leg Data extracted from HM Fan’s ANSYS Model of Composite Modular, TF and PF Coils Impact of Added Bolts assessed by Post Processing, not direct Modeling

2. AWB0202072 A B A C B C 0 of 7 bolts added at A – A joint 3 of 7 bolts added at B – A joint 3 of 3 bolts added at B – C joint A Per Tom Brown’s Study 3/17/06

3. bolts to inner leg3 A B C 0 of 7 bolts added at A – A joint 3 of 7 bolts added at B – A joint 3 of 3 bolts added at B – C joint A No problem with the 3 bolts as shown. These 3 bolts are in the clear, located on one side of the CL. If you need one for positioning, put one here. Per Tom Brown’s Study Updated 1/31/07

4. AWB0202074 Friction Enhancement Helps in Regions in Compression (Blue) Note: Above does not include effect of preload from added bolts CC2BC2AB2AAABBCCC

5. AWB0202075 All Results for 2T High Beta Scenario

6. AWB0202076 Shear Loads Components at IL of MCWF Flanges Max Shear Top/Bot is 590 KN (133 Klbs)

7. AWB0202077 Compression Over Inboard Region

8. AWB0202078 Adding Bolts to Inner Leg Reduces Required Coefficient of Friction to 0.45 Based on Bolt Preload of 45797 lb at 80K Need to Update for Minimum Expected Preload

9. AWB0202079 Again, All Results for 2T High Beta Scenario

10. AWB02020710

11. AWB02020711 Maximum Coefficient of Friction Required Outboard is under 0.25 Based on Bolt Preload of 45797 lb at 80K

12. AWB02020712 Conclusions – Based on Bolt Averages over Regions – No Peaking Assumed If the coefficient of friction in the inboard region can be verifiably enhanced (ie with diamond grit) to 0.6 we should be OK and maintain the 0.15 margin the NCSX Design Requirements dictate. –At mu = 0.50, margin drops to 0.05 (ie 90% of Limit) If we can provide a coefficient of friction of 0.4 in the outboard region, we should again be OK and again maintain the 0.15 margin the NCSX Design Requirements dictate. If we can only provide a coefficient of friction of 0.3 in the outboard region, our margin is less but still positive, with the bolt shear capability providing some additional margin of safety (our belts and suspenders). –How do we fold this into criteria? Need to Understand Peaking due to gaps in bolting pattern

13. AWB02020713 Shim Identifications cc2t cc2b cct cc2int ccb ccint bc2tl bc2tru bc2trl bc2bru bc2int bc2brl bc2bl bcint bctl bctru bctrl bcbrl bcbl aaint aatl aabl aatr aabr ab2int ab2tl ab2tru ab2trl ab2br ab2bl abint abtl abtr abbru abbrl abbl -60 deg +60 deg 0 deg cc2inb bc2inb ab2inbaainb ccinb bcinb abinb