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Flexible Self Locking Pin-less Joint

Flexible Self Locking Pin-less Joint. Lance Woolley Ben Henrie. Compliant Chair. Complex Geometry. Original Design. Modified Design. Required Information Compressive stress upper compliant member Tensile stress lower compliant member. Required Modeling Mesh size 0.15 – 0.3 cm

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Flexible Self Locking Pin-less Joint

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  1. Flexible Self Locking Pin-less Joint Lance Woolley Ben Henrie

  2. Compliant Chair

  3. Complex Geometry Original Design Modified Design

  4. Required Information Compressive stress upper compliant member Tensile stress lower compliant member Required Modeling Mesh size 0.15 – 0.3 cm Mesh technique Mapped Free Target surface Required Information

  5. Simplified Model • Plane of Symmetry • 2-D Plane • Constraints • Horizontal Pin-Slider • Vertical Rollers • Loads • Fx = 723 N • Fy = -123 N

  6. Free Mesh for Original Design Free Mesh at 0.20 Free Mesh at 0.15

  7. Deformed Shape for Original Design

  8. Stress with 0.20 Mesh for Original Design

  9. Stress with 0.15 Mesh for Original Design

  10. Free Mesh for Modified Design Mesh at 0.15 Mesh at 0.30

  11. Deformed Shape for Modified Design

  12. Stress for Modified Design

  13. Conclusion • FEA showed were the stresses would be present • Model was simplified by a factor of eight • Mesh size plays an important roll in an accurate models • Both designs need to be modeled non-linearly

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