Angelides, S., Burgan, B., Kyprianou, C. et al. (2 more authors) (2023) An application of the Hudson clearing method to near-field blast loading and above-ground explosions. In: Proceedings of the 6th International Conference on Protective Structures (ICPS6). 6th International Conference on Protective Structures (ICPS6), 14-17 May 2023, Auburn, AL, United States. International Association of Protective Structures
Abstract
Clearing effects influence the pressure-time history experienced by surface structures of finite size. This is a phenomenon that results in gradually reducing the reflected pressures on the front face of a building, to the lower free-field pressures experienced by the sides and roof. The Hudson method is a first-principles approach to account for clearing effects on finite surface structures by superimposing the reflected pressures derived on infinite surfaces with pressure relief waveforms travelling from the free edges. This method has shown good agreement with experimental and numerical results in the mid- and far-field, when a single Friedlander blast wave is assumed to impinge on a surface. This paper will explore the application of the Hudson clearing method to above-ground explosions with targets located above the triple-point path, where the pulse consists of two Friedlander blast waves, resulting from the incident and ground-reflected waves arriving separately at the target. Furthermore, the limitations of the Hudson clearing method to near-field explosions will also be assessed. For both cases, the semi-empirical Low Altitude Multiple Burst (LAMB) addition method will be considered in the derivation of the reflected pressure-time histories on infinite surfaces. To assess the predictions of the Hudson clearing method, these will be compared with the results from computational fluid dynamic analyses.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2023 The Author(s). For reuse permissions, please contact the Author(s). |
Keywords: | Blast loading; clearing; near-field; triple-point path |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Civil and Structural Engineering (Sheffield) |
Funding Information: | Funder Grant number INNOVATE UK 10003655 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 17 May 2023 13:30 |
Last Modified: | 22 May 2023 13:16 |
Status: | Published |
Publisher: | International Association of Protective Structures |
Refereed: | Yes |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:199174 |