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Jessica Schoenbauer 2/21/08 Skirts Global Buckling Code

Jessica Schoenbauer 2/21/08 Skirts Global Buckling Code. The Global Buckling Code. The Code Creates data to be sent to a function that creates the input file using a template - writes: 1. node locations 2. loads 3. material properties Runs StaDyn using a script file

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Jessica Schoenbauer 2/21/08 Skirts Global Buckling Code

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  1. Jessica Schoenbauer2/21/08SkirtsGlobal Buckling Code

  2. The Global Buckling Code • The Code • Creates data to be sent to a • function that creates the input • file using a template • - writes: • 1. node locations • 2. loads • 3. material properties • Runs StaDyn using a script file • Reads the StaDyn output file • Outputs pass/fail & lambda *made to run post “main_once” Inputs: 1) Stage lengths 2) Stage diameters 3) Wall thickness for stage 4) Material of each stage Outputs: 1) Pass/Fail 2) Lambda (load factor) Structures Group

  3. Comments about the Code The load uses thrust and the maximum G-loading. Assumes a fixed number of elements per stage regardless of the stage length. It is a simplified beam model which performs beam column buckling. It applies the imposed 1.25 safety factor. Ran test case LG-CA-DA-DT. The rocket did NOT buckle. Future Work • Write the code to also work with a two stage rocket Structures Group

  4. N16 E15 N15 E14 N14 E13 Material 3 N13 E12 N12 E11 N11 E10 N10 E9 N9 E8 Material 2 N8 E7 N7 E6 N6 E5 N5 E4 N4 E3 Material 1 N3 E2 N2 E1 N1

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