Proposal Presentation: Multiaxial Fatigue Analysis of Composite Tension-Torsion Straps for Rotor...
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Transcript of Proposal Presentation: Multiaxial Fatigue Analysis of Composite Tension-Torsion Straps for Rotor...
![Page 1: Proposal Presentation: Multiaxial Fatigue Analysis of Composite Tension-Torsion Straps for Rotor Systems Ryan T. Casey.](https://reader036.fdocuments.in/reader036/viewer/2022062303/55180e2555034696438b46b3/html5/thumbnails/1.jpg)
Proposal Presentation:
Multiaxial Fatigue Analysis of Composite Tension-Torsion Straps for Rotor Systems
Ryan T. Casey
![Page 2: Proposal Presentation: Multiaxial Fatigue Analysis of Composite Tension-Torsion Straps for Rotor Systems Ryan T. Casey.](https://reader036.fdocuments.in/reader036/viewer/2022062303/55180e2555034696438b46b3/html5/thumbnails/2.jpg)
Tension-Torsion Strap
http://upload.wikimedia.org/wikipedia/commons/2/29/Md500e-rotorhead-aradecki-070316-01.jpg
McDonnell Douglas MD-500E Rotor Head
![Page 3: Proposal Presentation: Multiaxial Fatigue Analysis of Composite Tension-Torsion Straps for Rotor Systems Ryan T. Casey.](https://reader036.fdocuments.in/reader036/viewer/2022062303/55180e2555034696438b46b3/html5/thumbnails/3.jpg)
Common Rotor System Configuration for T-T Strap
Tension-Torsion Strap
Flap Hinge
Lead/Lag Hinge
Pitch Housing
Blade Attachment
![Page 4: Proposal Presentation: Multiaxial Fatigue Analysis of Composite Tension-Torsion Straps for Rotor Systems Ryan T. Casey.](https://reader036.fdocuments.in/reader036/viewer/2022062303/55180e2555034696438b46b3/html5/thumbnails/4.jpg)
Loading Conditions of T-T Strap
1. CF Load2. Torsional Twist due to Pitch Input3. Small Flatwise Bending due to Pitch Housing Deflection
![Page 5: Proposal Presentation: Multiaxial Fatigue Analysis of Composite Tension-Torsion Straps for Rotor Systems Ryan T. Casey.](https://reader036.fdocuments.in/reader036/viewer/2022062303/55180e2555034696438b46b3/html5/thumbnails/5.jpg)
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
![Page 6: Proposal Presentation: Multiaxial Fatigue Analysis of Composite Tension-Torsion Straps for Rotor Systems Ryan T. Casey.](https://reader036.fdocuments.in/reader036/viewer/2022062303/55180e2555034696438b46b3/html5/thumbnails/6.jpg)
Expected Results
• Fatigue Life Range Prediction for Composite T-T Strap
• FEA Models (ANSYS Workbench)
• Equivalent Material Properties from Laminate Theory
• Notch Factors
![Page 7: Proposal Presentation: Multiaxial Fatigue Analysis of Composite Tension-Torsion Straps for Rotor Systems Ryan T. Casey.](https://reader036.fdocuments.in/reader036/viewer/2022062303/55180e2555034696438b46b3/html5/thumbnails/7.jpg)
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
![Page 8: Proposal Presentation: Multiaxial Fatigue Analysis of Composite Tension-Torsion Straps for Rotor Systems Ryan T. Casey.](https://reader036.fdocuments.in/reader036/viewer/2022062303/55180e2555034696438b46b3/html5/thumbnails/8.jpg)
Questions
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