proposal presentation:
DESCRIPTION
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. - PowerPoint PPT PresentationTRANSCRIPT
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Proposal Presentation:
Multiaxial Fatigue Analysis of Composite Tension-Torsion Straps for Rotor Systems
Ryan T. Casey
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Tension-Torsion Strap
http://upload.wikimedia.org/wikipedia/commons/2/29/Md500e-rotorhead-aradecki-070316-01.jpg
McDonnell Douglas MD-500E Rotor Head
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Common Rotor System Configuration for T-T Strap
Tension-Torsion Strap
Flap Hinge
Lead/Lag Hinge
Pitch Housing
Blade Attachment
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Loading Conditions of T-T Strap
1. CF Load2. Torsional Twist due to Pitch Input3. Small Flatwise Bending due to Pitch Housing Deflection
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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
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Expected Results
• Fatigue Life Range Prediction for Composite T-T Strap
• FEA Models (ANSYS Workbench)
• Equivalent Material Properties from Laminate Theory
• Notch Factors
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Project Task Milestones
Project Task Milestones Due Date
Research in Classical Laminate Theory &Classical Laminate Theory February 12, 2010
Determine Design Parameters/Requirements February 12, 2010
Common Stress Spectrum Creation February 19, 2010
Complete FEA of Metal Strap Configuration March 5, 2010
Composite Design concurrent w/ FEM & Fatigue Analysis March 5, 2010
Finalize Composite Strap Design March 19, 2010
Complete FEM & Fatigue Life Analysis March 26, 2010
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Questions
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