6533b7d2fe1ef96bd125e1f7
RESEARCH PRODUCT
Probabilistic Evaluation of the Adaptation Time for Structures under Seismic Loads
Salvatore BenfratelloLuigi PalizzoloPietro Tabbusosubject
probabilistic approachEngineeringMonte Carlo methodStructure (category theory)seismic loading020101 civil engineeringProbability density function02 engineering and technology0201 civil engineeringAccelerationEngineering (all)0203 mechanical engineeringAdaptation (computer science)Engineering(all)adaptation time; Dynamic shakedown; probabilistic approach; seismic loading; Engineering (all)Dynamic shakedownbusiness.industrySeismic loadingProbabilistic logicGeneral MedicineStructural engineeringShakedown020303 mechanical engineering & transportsadaptation timebusinessSettore ICAR/08 - Scienza Delle CostruzioniAlgorithmdescription
Abstract In this paper, a probabilistic approach for the evaluation of the adaptation time for elastic perfectly plastic frames is proposed. The considered load history acting on the structure is defined as a suitable combination of quasi-statical loads and seismic actions. The proposed approach utilizes the Monte Carlo method in order to generate a suitable large number of seismic acceleration histories and for each one the related load combination is defined. Furthermore, for each load combination the related adaptation time is determined, if any, as the optimal one for which the structure is able to shakedown under the unamplified applied actions. A known generalized Ceradini's theorem is utilized. The adaptation time values obtained with reference to all the generated seismic acceleration histories for which the shakedown occurs allows us to define the related cumulative conditioned probability function and, therefore, to identify the optimal adaptation time as the one with a probability not lower than a suitably assigned value.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-01-01 |