Optimization of Parametric Studies Using Strategies of Sampling Techniques

To improve the efficiency of parametric studies or tests planning the method is proposed, that takes into account all input parameters, but only a few simulation runs are performed to assess the relative importance of each input parameter. For K input parameters with N input values the total number of possible combinations of input values equals NK. To limit the number of runs, only some (totally N) of possible combinations are taken into account. The sampling procedure Updated Latin Hypercube Sampling is used to choose the optimal combinations. To measure the relative importance of each input parameter, the Spearman rank correlation coefficient is proposed. The sensitivity and the influence of all parameters are analyzed within one procedure and the key parameters with the largest influence are immediately identified.

Authors:

• Lenka Ševelová
• Aleš Florian

Keywords:

• Concrete
• pavement
• simulation
• reliability
• Latin Hypercube Sampling
• parametric studies.

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