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Adjustable Linear Shock Absorber Redesign

Adjustable Linear Shock Absorber Redesign. Matt Davis Joe O’Connor Ben Patterson. Advisor: Mr. Lobaugh. Agenda. Sponsor Info Contract Details Design Problem Analysis of Competitors Shock. Modern Industries. Founded in 1946 Herbet S. Sweny Industries Served Machining Heat Treating

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Adjustable Linear Shock Absorber Redesign

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  1. Adjustable Linear Shock Absorber Redesign Matt Davis Joe O’Connor Ben Patterson Advisor: Mr. Lobaugh

  2. Agenda • Sponsor Info • Contract Details • Design Problem • Analysis of Competitors Shock

  3. Modern Industries • Founded in 1946 • Herbet S. Sweny • Industries Served • Machining • Heat Treating • Materials Research • Products Division

  4. Products Division • Currently 7 Shocks • None adjustable • Custom for each customer • Our Project • Adjustable linear shock absorber • “Catalog Version”

  5. Objective Statement • Study and reengineer an OEM Linear shock absorber in order to provide a better working, more cost effective product that can be mass produced for a wide variety of commercial and industrial uses.

  6. Specific Goals • Improvements: • Better functionality – Adjustment Method • Material/design improvements • More cost effective product

  7. Scope & Limitations • Scope • 3D models and working drawings of new designs • Simulate and test with FEA • Research material changes • Limitations • Only redesigning OEM linear 1B model • Materials limited to commercially available materials

  8. Deliverables • All concepts ideas • FEA results • Hand calculations to verify FEA • Working drawings of final design • Prototype

  9. Upper Level Courses • 306 - Modeling • 320 – Hand Calculations • 415/425 – FEA of Designs • 432 – Internal Fluid • 457 – Product Improvements • 470 – Material Selection

  10. Gantt Chart

  11. Design Ideas • Before deconstruction

  12. Design Ideas Cont.

  13. Analysis of Competitor Shock • Adjustment issues • Deconstruction • Testing • Physical • FEA

  14. Deconstruction

  15. Internal Fluid Flow • Compression • Extension

  16. MTS Testing

  17. MTS Testing

  18. Rockwell Hardness Testing

  19. Competitors FEA Hoop Stress

  20. Competitors FEA VonMises Stress

  21. Improvements • Adjustment Methods • Material Improvements • Manufacturing Costs • Mounting Options

  22. Prototype Design

  23. Prototype FEA Hoops Stress (Tangential): Inner Cylinder Hoops Stress (Longitudinal): Inner Cylinder

  24. Prototype FEA Total Deformation: Inner Cylinder

  25. Prototype FEA Hoops Stress (Tangential): Inner Cylinder With Insert Shelf Combined Hoops Stress (Longitudinal): Inner Cylinder With Insert Shelf Combined

  26. Prototype FEA Total Deformation: Inner Cylinder With Insert Shelf Combined

  27. Prototype FEA Contact Pressure Between Inner Cylinder and Insert Shelf

  28. Prototype FEA Compressive Stress: Piston Shaft Total Deformation: Piston Shaft

  29. Prototype FEA Compressive Stress: Outer Cylinder Total Deformation: Outer Cylinder

  30. Material Selection

  31. Future Plans • Produce and Test Prototype • Cost Analysis • Finalize Design

  32. Summary • Improvements • Manufacturing • Materials • Design • Deconstruction • Testing/Analysis • Prototype Design

  33. Questions

  34. Prototype FEA Hoops Stress (Tangential): Inner Cylinder Hoops Stress (Longitudinal): Inner Cylinder

  35. Prototype FEA Hoops Stress (Tangential): Inner Cylinder

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