Abstract
The response surface methodology (RSM) and Monte Carlo simulation (MCS) appear to be the most general approaches to calculate failure probabilities of non-linear structural multi-degrees of freedom (MDOF) systems subjected to random dynamic loading. In an effort to reduce the number of time consuming simulations generally required for direct MCS, only a few of which are important for the assessment of failure rates, a new selective MCS technique named “Double & Clump” (D&C) is suggested. The main idea of this procedure is to increase for each time step the relatively low number of response samples containing higher mechanical energy. The efficiency of selective MCS is demonstrated by applying it to a 6-storey frame structure subjected to earthquake excitation. The comparison with results obtained by using the RSM is presented and discussed.
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