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- W2881002584 abstract "Scenario based design of strategic underground structures is increasingly becoming important with increasing capacities of nuclear warheads. The ground displacement caused by nuclear-air-blast is an important design parameter for such structures. A simplified model to compute ground displacement, proposed earlier by authors, is recommended for preliminary designs in professional practice. This paper quantifies the uncertainties associated with this simplified model as well as its input parameters namely P-wave velocity, strain recovery ratio, velocity ratio, and constrained modulus, while estimating the nuclear blast induced ground displacement. The model uncertainty quantification is generally accomplished using sampling based Bayesian updating techniques. However, this is a computationally time-consuming process and not suitable with increasing number of model parameters. To circumvent this, an alternate simplified model uncertainty characterization approach is developed based on Taylor’s series approximation. The validity of the proposed approach is established by comparing the results for a simple case of an earth pressure problem, routinely encountered in geotechnical engineering, against Bayesian approach. Subsequently, this simplified approach has been used to quantify the model uncertainties of air-blast induced ground displacement model and it is observed that this model is biased towards conservative side." @default.
- W2881002584 created "2018-07-19" @default.
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- W2881002584 date "2018-07-13" @default.
- W2881002584 modified "2023-10-16" @default.
- W2881002584 title "Uncertainties of a Nuclear-Air-Blast Induced Ground Displacement Model" @default.
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- W2881002584 doi "https://doi.org/10.1007/978-3-319-95753-1_15" @default.
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