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Aerospace Dynamic Damage and Crashworthiness

Aerospace Dynamic Damage and Crashworthiness. Crashworthiness for Aerospace Structures and Hybrids (CRASH) Lab. Introduction. Why are we working on this project? What is the big picture?. Last Year’s work. What they did Positive aspects What needs to be investigated further

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Aerospace Dynamic Damage and Crashworthiness

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  1. Aerospace Dynamic Damage and Crashworthiness Crashworthiness for Aerospace Structures and Hybrids (CRASH) Lab

  2. Introduction • Why are we working on this project? • What is the big picture?

  3. Last Year’s work • What they did • Positive aspects • What needs to be investigated further • What we are doing : composite

  4. Background • Gantt chart • Target specifications • Mission Statement

  5. Primary Structures • Fuselage • Wings • Low vs high wings; effect on aircraft • Empennage • Power Plants • Mention how they come off when plane lands on water • Undercarriage • Should be discussed in more detail than other • Trigger points

  6. Composites • Basic structure • Quasi-isotropic • Matrix & Fiber material • Advantages and disadvantages • Light, strong • Failure mode

  7. Composites(cont’d) • Relevance to the project • Recent Airplane use composite • (Boeing 787 – 50%) • (Airbus A380 -25%) :GLARE_skin • Implementation • Strain gages • Hot pressing

  8. Theory and Constrains • Problems that will be encountered in testing and how they can be overcome using LS Dyna • Dimensional Analysis • Pi Theorem • Aerodynamic principles • Design constrains: angle of attach, pitch. Where the center of pressure, lift, and gravity should be located for a good design

  9. Progress • Funding • National Instruments, SEC • Current design of platform and what is being done to change it (improve it) • Hard vs soft impacts • LS dyna simple models • Ball-Plate (Composite failure) • Cylinder crush (mention undercarriage)

  10. Future Work • Find more funding • Analyze composition of undercarriage • How to predict undercarriage failure upon a vertical impact

  11. Conclusion • Recap • What we are doing • Why we are doing it • How • Funding • Progress and Future work

  12. Team structure • Team leader • Everybody engage in math base working • Sub-team • ½ in LS-DYNA • ½ in Composite • Funding (SEC) / Equipment(NI) -> Alex

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