Optimisation of numerical modelling for structures subjected to internal blast

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dc.contributor.authorSaleh, Men_AU
dc.contributor.authorPickerd, Ven_AU
dc.contributor.authorYiannakopoulos, Gen_AU
dc.contributor.authorBrincat, Men_AU
dc.contributor.authorBortolan Neto, Len_AU
dc.contributor.authorMathys, Zen_AU
dc.contributor.authorReid, Wen_AU
dc.date.accessioned2023-05-07T22:43:42Zen_AU
dc.date.available2023-05-07T22:43:42Zen_AU
dc.date.issued2018-09-23en_AU
dc.date.statistics2023-05-05en_AU
dc.description.abstractThe design of modern military and naval platforms is often assisted by experiments and computational simulations, that provide relevant insights about material reliability, mechanical performance and design vulnerability to blast loading. An important design consideration for naval platforms is the damage response of structures from internal blast loading which is characterized by high strain rate loading and complex shock and blast wave interactions and reflections. To understand the damage response of structures under this loading condition, scaled experiments coupled with numerical simulations are used to identify (a) the temporal displacement fields using in-situ DIC measurements (b) onset of critical failure in various elements and (c) spatial distribution of internal pressure fields. A methodology for understanding the failure response of structures to internal blast loading is investigated using both scaled experiments and numerical modelling. Experimental data, including pressure, displacement, plastic strain and acceleration measurements, are compared with simulation results to determine modelling accuracy for both elastic and plastic deformation. The multi-scale modelling approach adopts a discretization technique for the structure by way of variations in the material property attributes of: weld material, Heat Affected Zone (HAZ) and parent material. The blast propagation and fluid structure interaction are achieved through an ALE simulation framework and provided insights into the deformation mechanisms exhibited in stiffened containers. Multiple structure configurations are simulated to explore this design space and results are compared with the experimentally observed loading and structural response behaviours. The simulation results, alongside the scaled experiments, provide a robust framework for the prediction of blast response of representative naval structures and allows for their optimization to improve both the subsystem and platform integrity.en_AU
dc.identifier.citationSaleh, M., Pickerd, V., Yiannakopoulos, G., Brincat, B., Vincent, P, Bortolan Neto, L., Mathys, Z., & Reid, W. (2018). Optimisation of numerical modelling for structures subjected to internal blast. Paper presented at the 25th International Symposium on Military Aspects of Blast and Shock (MABS25), The Hague, The Netherlands, 23-28 September 2018. Retrieved from: https://www.mabs.ch/spiez-base/mabs-21-to-25/mabs-25/en_AU
dc.identifier.conferenceenddate28 September 2018en_AU
dc.identifier.conferencename25th International Symposium on Military Aspects of Blast and Shock (MABS25)en_AU
dc.identifier.conferenceplaceThe Hague, The Netherlandsen_AU
dc.identifier.conferencestartdate23 September 2018en_AU
dc.identifier.urihttps://www.mabs.ch/spiez-base/mabs-21-to-25/mabs-25/en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/15032en_AU
dc.language.isoenen_AU
dc.publisherInternational Symposium on Military Aspects of Blast and Shock (MABS)en_AU
dc.subjectVulnerabilityen_AU
dc.subjectStrain rateen_AU
dc.subjectNumerical analysisen_AU
dc.subjectExplosionsen_AU
dc.subjectImpact shocken_AU
dc.subjectSimulationen_AU
dc.titleOptimisation of numerical modelling for structures subjected to internal blasten_AU
dc.typeConference Abstracten_AU
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