• least squares stochastic boundary element method

    نویسندگان :
    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 505
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     the main issue in this paper is mathematical formulation and computational implementation of the stochastic boundary element method based on the generalized stochastic perturbation technique. the key feature is a replacement of the given order polynomial response function with the least squares method leading to a numerical determination of this response function. this new approach minimizes the approximation error during the recovery of the structural response indexed with the random input parameter, which is a decisive factor for the entire stochastic method accuracy; contrary to some lower order techniques, numerical implementation of up to the fourth order probabilistic moments is displayed. computational experiments obey both analyses for the homogeneous and heterogeneous structures with gaussian random material parameters and also some comparison against the monte-carlo simulation and analytical results.

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