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NSTX Supported by NSTX Centerstack Upgrade Project Meeting P. Titus/EA Branch November 17, 2010 Lid/Cover/Flex Aluminum Block Bolting Stress And Stresses.

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Presentation on theme: "NSTX Supported by NSTX Centerstack Upgrade Project Meeting P. Titus/EA Branch November 17, 2010 Lid/Cover/Flex Aluminum Block Bolting Stress And Stresses."— Presentation transcript:

1 NSTX Supported by NSTX Centerstack Upgrade Project Meeting P. Titus/EA Branch November 17, 2010 Lid/Cover/Flex Aluminum Block Bolting Stress And Stresses with Proposed Reinforcements

2 Offsets Used to Impose Moments Present Configuration

3 Produces High Bolt Stresses for the Upgrade Loads

4 The Upgrade PDR includes addition of a Reinforcing Plate Postulated Weld

5 Tresca Stress in Umbrella Structure Plate Present Configuration Proposed Reinforcement

6 No Reinforcement With Proposed Welded Reinforcement Plate

7 Preloaded Bolt Reinforcement ~90000psi Preload Bolt Stress is About the Same

8 Welds Extend these “Wings”

9 Welds

10

11

12 When the OOP force reaches 25% of nominal, the spoke lid springs upward

13 Spoke/Lid/Flex/Von Mises Stress peaks at 17.8ksi

14 Danny’s Crown Tooth Analysis He added a radius and we re- oriented the fiberglass reinforcement – but we need the updated design. Maybe Ali can add In TF Flag Calc?


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