Dynamic Fragmentation of Planetary Materials: Length Scale Quantification and Semi-Analytical Modelling

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dc.contributor.authorRogers, Robert
dc.contributor.authorSpray, John
dc.contributor.authorHogan, James
dc.date.accessioned2025-05-01T12:23:20Z
dc.date.available2025-05-01T12:23:20Z
dc.date.issued2013
dc.descriptionThe dynamic fragmentation of planetary materials during impact into finite targets has been examined. A particle tracking algorithm was implemented to estimate the size and velocity of fragments ejected from the rear of the target. A total of 76 experiments were performed for four material, target thicknesses of 7 mm to 55 mm, and impact energies of 10 J to 6,810 J. Semi-empirical models were developed from non-dimensional groups to predict key experimental results. This includes the transformation of incoming projectile kinetic energy to the ejecta kinetic energy. The amount of impact energy converted to kinetic energy of ejecta was found to increase from 2% to 18% over the range of test conditions. Energy dissipated into expanding the field laterally was found to be small in comparison to the streamwise direction (KEy/KEx= 4 %).
dc.identifier.doihttps://doi.org/10.7939/R3C24R20G
dc.language.isoen
dc.relationhttp://dx.doi.org/10.1016/j.ijimpeng.2013.07.006
dc.relation.isversionofHogan, James, Spray, John, & Rogers, Robert. (2013). Dynamic Fragmentation of Planetary Materials: Length Scale Quantification and Semi-Analytical Modelling. International Journal of Impact Engineering, 62, 219-228. http://dx.doi.org/10.1016/j.ijimpeng.2013.07.006
dc.rightsAttribution-NonCommerical-NoDerivs 4.0 International
dc.subjectParticle tracking
dc.subjectDynamic fragmentation
dc.subjectPlanetary materials
dc.subjectBrittle fracture
dc.subjectImpact testing
dc.titleDynamic Fragmentation of Planetary Materials: Length Scale Quantification and Semi-Analytical Modelling
dc.typehttp://purl.org/coar/resource_type/c_6501 http://purl.org/coar/version/c_970fb48d4fbd8a85
ual.jupiterAccesshttp://terms.library.ualberta.ca/public

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