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Senior Design Fixture Analysis

Senior Design Fixture Analysis. ME 450: Finite Element Analysis Dr. K Nema Final Project Javier Angulo Matt Schonauer Avery Sheets. Overview. Introduction Background Model Details Analysis and Results Conclusions. Introduction.

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Senior Design Fixture Analysis

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  1. Senior Design Fixture Analysis ME 450: Finite Element Analysis Dr. K Nema Final Project Javier Angulo Matt Schonauer Avery Sheets

  2. Overview • Introduction • Background • Model Details • Analysis and Results • Conclusions

  3. Introduction • Analysis will be done on a fixture designed for ME 462: Capstone Design • Project sponsor is Remy, Inc • Out of Anderson, IN • The analysis will be purely structural • Von Mises stresses • Deflection/Deformation

  4. Background • Remy designs and manufactures starters

  5. Background • Most analysis of products is done using FEA • Testing is usually a “break it” test • Tests aren’t universal and standardized • No reliable way to compare current products to competitor products

  6. Background • Force transmission path through individual components

  7. Background • The particular fixture being tested will be used to connect the drive shaft to the torsion machine • The pin end will be held by the fixture

  8. Model Details

  9. Model Details

  10. Model Details

  11. Analysis and Results • Attempt #1 • This method would not provide any moment at all • There is no implementation in Workbench to apply a pressure on part of a surface

  12. Analysis and Results • Attempt #2

  13. Analysis and Results • Attempt #3 • An okay approximation, but not quite accurate • Placement of point forces based solely on clicking the mouse • This discrepancy caused forces to be unbalanced

  14. Analysis and Results • Results from the last analysis indicated that the point of high stress was indeed the base of the triangular part • Rounds were added at the intersection of the circular base and the triangular chuck

  15. Analysis and Results • Surfaces can be split into multiple surfaces in Pro Engineer • The force of the torsion machine exerted on the triangular chuck could be better modeled

  16. Analysis and Results • Pro Engineer problems • Deleted features still stored in the database • Had to create a completely new part

  17. Analysis and Results • Maximum torque that can be applied is 1130 Nm

  18. Analysis and Results • Maximum von Mises stress is 48.51 MPa • Maximum deflection is 0.004 mm (negligible)

  19. Conclusions • Design was approved through FEA using a combination of Pro E and ANSYS Workbench • Good example of the importance of learning the theory behind FEA

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