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Proposal Presentation:

Proposal Presentation:. Multiaxial Fatigue Analysis of Composite Tension-Torsion Straps for Rotor Systems Ryan T. Casey. Tension-Torsion Strap. McDonnell Douglas MD-500E Rotor Head. http://upload.wikimedia.org/wikipedia/commons/2/29/Md500e-rotorhead-aradecki-070316-01.jpg. Lead/Lag Hinge.

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Proposal Presentation:

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  1. Proposal Presentation: Multiaxial Fatigue Analysis of Composite Tension-Torsion Straps for Rotor Systems Ryan T. Casey

  2. Tension-Torsion Strap McDonnell Douglas MD-500E Rotor Head http://upload.wikimedia.org/wikipedia/commons/2/29/Md500e-rotorhead-aradecki-070316-01.jpg

  3. Lead/Lag Hinge Pitch Housing Blade Attachment Flap Hinge Tension-Torsion Strap Common Rotor System Configuration for T-T Strap

  4. Loading Conditions of T-T Strap • CF Load • Torsional Twist due to Pitch Input • Small Flatwise Bending due to Pitch Housing Deflection

  5. Methodology • Classical Laminate Theory • Material Properties (E, G, etc…) • Develop FEA model • Determine Notch Factors • Develop Stress Spectrum • Multiaxial Fatigue Failure Theories: • Max Principal Strain, Von Mises, Max Shear Strain, Lohr-Ellison, Kandil-Brown-Miller

  6. Expected Results • Fatigue Life Range Prediction for Composite T-T Strap • FEA Models (ANSYS Workbench) • Equivalent Material Properties from Laminate Theory • Notch Factors

  7. Project Task Milestones

  8. Questions ?????

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