In the present probabilistic methodology for the strength of aerospace propulsion system structural components subjected to such environmentally-induced primitive variables as loading stresses, high temperature, chemical corrosion, and radiation, time is encompassed as an interacting element, allowing the projection of creep and fatigue effects. A probabilistic constitutive equation is postulated to account for the degradation of strength due to these primitive variables which may be calibrated by an appropriately curve-fitted least-squares multiple regression of experimental data. The resulting probabilistic constitutive equation is embodied in the PROMISS code for aerospace propulsion component random strength determination.


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    Title :

    Probabilistic constitutive relationships for material strength degradation models


    Contributors:
    Boyce, L. (author) / Chamis, C. C. (author)

    Conference:

    AIAA, ASME, ASCE, AHS, and ASC, Structures, Structural Dynamics and Materials Conference ; 1989 ; Mobile, AL, United States


    Publication date :

    1989-01-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English