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Standoff-mortar-induced fragment forces

Authors
Journal
International Journal of Impact Engineering
0734-743X
Publisher
Elsevier
Publication Date
Volume
35
Issue
9
Identifiers
DOI: 10.1016/j.ijimpeng.2007.06.003
Keywords
  • Fragment Deceleration
  • Fragment Forces On Panels
  • Fragment Pressure Field
  • Metal Case Fragmentation
  • Mortar Detonation

Abstract

Abstract The mechanical description of the deceleration process of steel case fragments retained in CELOTEX ® panels in vertical mortar experiments is formulated. Ejected mortar fragments are classified according to their general shape into chunks and fingers and the corresponding probability distributions for linear momentum and weight are inferred. Mortar fragment momentum is beta distributed, whereas fragment weight is a Weibull variate. The equivalent pressure field and the resultant normal force exerted by a rain of flying mortar fragments on transverse panels are modeled. An example illustrates the application of the model using fragment information available either from experimental evidence or from simulation.

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