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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 Lance Woolley Ben Henrie
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 Mesh technique Mapped Free Target surface Required Information
Simplified Model • Plane of Symmetry • 2-D Plane • Constraints • Horizontal Pin-Slider • Vertical Rollers • Loads • Fx = 723 N • Fy = -123 N
Free Mesh for Original Design Free Mesh at 0.20 Free Mesh at 0.15
Free Mesh for Modified Design Mesh at 0.15 Mesh at 0.30
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