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Finite Element Analysis of Heat Sink

5/28/2012. Confidential Property of PFTINC. 2. Table of Contents. 1. Statement of Work2. Summary of Results3. Geometry4. Materials5. Elements6. Constraints7. Loads8. Results9. Conclusions

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Finite Element Analysis of Heat Sink

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    1. 5/29/2012 Confidential Property of PFTINC 1 Finite Element Analysis of Heat Sink ProFab Technology, INC August 17, 2005

    2. 5/29/2012 Confidential Property of PFTINC 2 Table of Contents 1. Statement of Work 2. Summary of Results 3. Geometry 4. Materials 5. Elements 6. Constraints 7. Loads 8. Results 9. Conclusions & Recommendations 10. Appendix A: Convection Coefficient Calculations

    3. 5/29/2012 Confidential Property of PFTINC 3 1. Statement of Work Thermal analysis of Profab Technology's HEAT SINK, part number 1001-100591 Determine the thermal resistance of the heat sink Examine 4 load cases: 5 Watts 10 Watts 15 Watts 20 Watts

    4. 5/29/2012 Confidential Property of PFTINC 4 2. Summary of Results

    5. 5/29/2012 Confidential Property of PFTINC 5 3. Geometry Pro/ENGINEER model, 1001-100591.prt

    6. 5/29/2012 Confidential Property of PFTINC 6 3. Geometry The units for the original Pro/ENGINEER model were: Pro/E default inch lbm s The model was converted to Metric for the thermal analysis: mmNs millimetres Newtons seconds All relations were commented out to prevent regeneration problems associated with units change

    7. 5/29/2012 Confidential Property of PFTINC 7 4. Materials The heat sink is Oxygen-free electronic Copper, UNS C10100 Material properties provided using MatWeb

    8. 5/29/2012 Confidential Property of PFTINC 8 5. Elements The Pro/MECHANICA model contains 7,000 tetrahedral solid elements

    9. 5/29/2012 Confidential Property of PFTINC 9 6. Constraints Convection constraint applied to vertical surfaces of pin fins

    10. 5/29/2012 Confidential Property of PFTINC 10 7. Loads A surface region was created 33.5 mm x 33.5 mm on the bottom surface of the heat sink for the heat load

    11. 5/29/2012 Confidential Property of PFTINC 11 7. Loads Heat loads were applied to the surface region on the bottom surface of the heat sink

    12. 5/29/2012 Confidential Property of PFTINC 12 8. Results Temperature for 5 W load case

    13. 5/29/2012 Confidential Property of PFTINC 13 8. Results Temperature for 5 W load case Capping plane shown for clarity

    14. 5/29/2012 Confidential Property of PFTINC 14 8. Results Temperature for 10 W load case

    15. 5/29/2012 Confidential Property of PFTINC 15 8. Results Temperature for 10 W load case Capping plane shown for clarity

    16. 5/29/2012 Confidential Property of PFTINC 16 8. Results Temperature for 15 W load case

    17. 5/29/2012 Confidential Property of PFTINC 17 8. Results Temperature for 15 W load case Capping plane shown for clarity

    18. 5/29/2012 Confidential Property of PFTINC 18 8. Results Temperature for 20 W load case

    19. 5/29/2012 Confidential Property of PFTINC 19 8. Results Temperature for 20 W load case Capping plane shown for clarity

    20. 5/29/2012 Confidential Property of PFTINC 20 8. Results Thermal resistance equation

    21. 5/29/2012 Confidential Property of PFTINC 21 8. Results Thermal resistance results

    22. 5/29/2012 Confidential Property of PFTINC 22 8. Results Thermal resistance results

    23. 5/29/2012 Confidential Property of PFTINC 23 9. Conclusions As the heat load increases, the thermal resistance decreases

    24. 5/29/2012 Confidential Property of PFTINC 24 10. Appendix A: Convection Coefficient Calculations References: Cooling Zone http://www.coolingzone.com/Guest/News/NL_SEP_2003/Tony/Tony_Sep_03.html Thermaflo http://www.thermaflo.com/bin/bgadatasht.pl?Pnum=b434316b10000

    25. 5/29/2012 Confidential Property of PFTINC 25 10. Appendix A: Convection Coefficient Calculations Thermal resistance equation from reference 1

    26. 5/29/2012 Confidential Property of PFTINC 26 10. Appendix A: Convection Coefficient Calculations Convection coefficient calculations from reference 2

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