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CM_PWR Drop Test

CM_PWR Drop Test. Structural FEA. Objectives. Simulate Drop Test from 3 feet using Algor simulation Produce an accurate Finite Element Analysis of the event. Materials. Test 1 - Aluminum. Simulated Forces. Test 1 & 2. Analysis. Analysis. Results. Maximum Principal Stress – 1235 psi

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CM_PWR Drop Test

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  1. CM_PWR Drop Test Structural FEA

  2. Objectives • Simulate Drop Test from 3 feet using Algor simulation • Produce an accurate Finite Element Analysis of the event

  3. Materials Test 1 - Aluminum

  4. Simulated Forces Test 1 & 2

  5. Analysis

  6. Analysis

  7. Results • Maximum Principal Stress – 1235 psi • 6061- O temper Aluminum • Max Yield Strength ~ 8000 psi • 6061- T6 Aluminum • Max Yield Strength ~ 35000 psi

  8. Materials Test 2 - Delrin

  9. Analysis

  10. Analysis

  11. Analysis

  12. Results • Maximum Principal Stress – 1370 psi • Delrin 500MP NC010 • Max Yield Strength ~ 10200 psi

  13. CM_PWR Thermal Test Structural FEA

  14. Simulated Test Conditions • Transient Thermal Analysis • 3 “Hot Spots” • 0-6 min – 15 watts of Heat Generated • 6-7 min – ramp up to 45 watts of Heat Generated • 7-8 min – Full 45 watts of Heat Generated

  15. Simulated Test Conditions • Initial Temperature – 32º C (90º F) • Convection Coefficient – 3.2 J/(sºCm2) • Surrounding air at 32º C • Density – 1.2096 kg/m3 • Prandtl No. – 0.71 • Thermal Conductivity – 0.0257 W/mºC

  16. Results Test 1 –Aluminum Body & Base

  17. Results Test 2 – DuPontDelrin Body & Aluminum Base

  18. Alternate Design • Heat sink on the bottom of the base plate • 5º C reduction at 6 minutes • 12º C reduction at 8 minutes • 48 in2increase in area • 0.038 lbmmassaddition

  19. Results Test 3 – DuPontDelrin Body & Aluminum (w/ Fins)Base

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