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Structures Initial Stress Wave and Buckling Calculations

Structures Initial Stress Wave and Buckling Calculations. Ashley Lantz. Presentation Outline. Stress Waves and Shock Waves Dynamic Buckling Conclusions. Stress Waves. Change or discontinuity creates Shock Waves Same velocity for Elastic Stress Waves

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Structures Initial Stress Wave and Buckling Calculations

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  1. Structures Initial Stress Wave and Buckling Calculations Ashley Lantz

  2. Presentation Outline • Stress Waves and Shock Waves • Dynamic Buckling • Conclusions Ashley Lantz

  3. Stress Waves • Change or discontinuity creates Shock Waves • Same velocity for Elastic Stress Waves • Where ce is the elastic stress wave velocity, E is Young’s Modulus and ρ is the density Ashley Lantz

  4. Stress Wave Velocity [m/s] Ashley Lantz

  5. Dynamic Buckling • Function of Elastic Stress Wave Velocity • Not Plastic Waves • Where σ is the stress in the material, L is the length of the penetrator, c is the elastic stress wave velocity, ρ is the density and h is the diameter Ashley Lantz

  6. Buckling Stress [m/s] Ashley Lantz

  7. Future Work • Plastic Waves • Changes due to Large-Deformation • Changes due to 3-Dimensional Analysis • Dynamic Buckling • Restorive Forces Ashley Lantz

  8. Questions?

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