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Permanent link (DOI): https://doi.org/10.7939/R3C24R20G

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

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Author or creator
Hogan, James
Spray, John
Rogers, Robert
Additional contributors
Subject/Keyword
Dynamic fragmentation
Particle tracking
Impact testing
Planetary materials
Brittle fracture
Type of item
Journal Article (Published)
Language
English
Place
Time
Description
The 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 %).
Date created
2013
DOI
doi:10.7939/R3C24R20G
License information

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Attribution-NonCommerical-NoDerivs 4.0 International
Citation for previous publication
Hogan, 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

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File title: Length scale- Hogan et al. 2013
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