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Molly Kane February 14, 2008 Structures Group Analysis of Unpressurized External Structure

Molly Kane February 14, 2008 Structures Group Analysis of Unpressurized External Structure. Unpressurized Conical Shells. Nose cone. Third Stage (Pressurized). Skirt 2 (Unpressurized). Second Stage (Pressurized). Skirt 1 (Unpressurized). Stage 1 (Pressurized). Structures Group. steel.

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Molly Kane February 14, 2008 Structures Group Analysis of Unpressurized External Structure

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  1. Molly KaneFebruary 14, 2008Structures GroupAnalysis of Unpressurized External Structure AAE 450 Spring 2008

  2. Unpressurized Conical Shells Nose cone Third Stage (Pressurized) Skirt 2 (Unpressurized) Second Stage (Pressurized) Skirt 1 (Unpressurized) Stage 1 (Pressurized) AAE 450 Spring 2008 Structures Group

  3. steel titanium aluminum Future Work • Working with MAT data, affects of stringers and support rings on critical values AAE 450 Spring 2008 Structures Group

  4. References • Weingarten, V.I., Seide, P., Buckling of Thin-Walled Truncated Cones – NASA Space Vehicle Design Criteria (Structures), National Aeronautics and Space Administration, September 1968. AAE 450 Spring 2008 Structures Group

  5. Critical Pressure – Axial Compression = correlation factor to account for difference between classical theory and predicted instability loads E = Young’s modulus t = thickness α = semivertex angle of cone ν = Poisson’s ratio Slide by: Jessica Schoenbauer Structures Group

  6. Critical Moment - Bending = correlation factor to account for difference between classical theory and predicted instability loads E = Young’s modulus t = thickness r1 = radius of small end of cone α = semivertex angle of cone ν = Poisson’s ratio Slide by: Jessica Schoenbauer Structures Group

  7. Uniform Hydrostatic Pressure Pressure: = correlation factor to account for difference between classical theory and predicted instability loads E = Young’s modulus t = thickness L = slant length of cone t = thickness Slide by: Jessica Schoenbauer Structures Group

  8. Torsion = correlation factor to account for difference between classical theory and predicted instability loads E = Young’s modulus t = thickness l = axial length of cone ν = Poisson’s ratio t = thickness Slide by: Jessica Schoenbauer Structures Group

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