Over the past decade, classical probabilistic analysis has been a popular approach among the uncertainty quantification methods. As the complexity and performance requirements of a structural system are increased, the quantification of uncertainty becomes more complicated, and various forms of uncertainties should be taken into consideration. Because of the need to characterize the distribution of probability, classical probability theory may not be suitable for a large complex system such as an aircraft, in that the information is never complete because of lack of knowledge and statistical data. Evidence theory, also known as Dempster-Shafer theory, is proposed to handle the epistemic uncertainty that stems from lack of knowledge about a structural system. Evidence theory provides us with a useful tool for aleatory (random) and epistemic (subjective) uncertainties. An intermediate complexity wing example is used to evaluate the relevance of evidence theory to an uncertainty quantification problem for the preliminary design of airframe structures. Also, methods for efficient calculations in large-scale problems are discussed.


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    Title :

    Uncertainty quantification of structural response using evidence theory


    Additional title:

    Quantifizierung der Zuverlässigkeit von Tragwerken mit der Evidenztheorie


    Contributors:
    Bae, H.R. (author) / Grandhi, R.V. (author) / Canfield, R.A. (author)

    Published in:

    AIAA Journal ; 41 , 10 ; 2062-2068


    Publication date :

    2003


    Size :

    7 Seiten, 14 Bilder, 2 Tabellen, 18 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Uncertainty Quantification of Structural Response Using Evidence Theory

    Bae, Ha-Rok / Grandhi, Ramana / Canfield, Robert | AIAA | 2002


    Uncertainty Quantification of Structural Response Using Evidence Theory

    Bae, H. / Grandhi, R. / Canfield, R. et al. | British Library Conference Proceedings | 2002


    Uncertainty Quantification of Structural Response Using Evidence Theory

    Ha-Rok Bae / Ramana V. Grandhi / Robert A. Canfield | AIAA | 2003



    Sensitivity Analysis of Structural Response Uncertainty Propagation Using Evidence Theory

    Bae, Ha-Rok / Grandhi, Ramana / Canfield, Robert | AIAA | 2002