Structural modeling techniques and results of nonlinear structural analyses of the Space Shuttle super-light-weight liquid oxygen (LO2) tank are presented. Results of buckling and nonlinear static analyses are presented for a critical prelaunch loading condition. Combined thermal and mechanical loads are considered, and the effects of initial geometric imperfections are included in the analysis. Results are presented that highlight short-wave-length response modes, and illustrate the interaction of combined loads in shell structures with compound curvatures. The results are used to illustrate the structural modeling and computational procedures needed, in general, to solve a large-scale, complex nonlinear structural analysis problem of practical importance. An overview of the STAGS finite element analysis code is presented. The procedures used to develop a detailed finite element that adequately simulates the local instability response of a large structure are described. Recommendations are made regarding solution control for large-scale nonlinear analysis.


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    Title :

    Modeling and nonlinear analysis of a large-scale launch vehicle under combined thermal and mechanical loads


    Additional title:

    Modellierung und nichtlineare Analyse eines großen Raumfahrzeugs unter kombinierten thermischen und mechanischen Belastungen


    Contributors:
    Young, R.D. (author) / Rankin, C.C. (author)


    Publication date :

    1996


    Size :

    11 Seiten, 12 Bilder, 4 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English