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Penetration calculations and measurements for a layered soil target
Author(s) -
Byers Rupert K.,
Chabai Albert J.
Publication year - 1977
Publication title -
international journal for numerical and analytical methods in geomechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.419
H-Index - 91
eISSN - 1096-9853
pISSN - 0363-9061
DOI - 10.1002/nag.1610010202
Subject(s) - silt , geotechnical engineering , penetration (warfare) , materials science , deformation (meteorology) , finite difference , geology , mechanics , structural engineering , composite material , engineering , mathematics , physics , mathematical analysis , paleontology , operations research
A tow‐dimensional finite difference wave propagation code was used to analyse the impact of a rigid, ogival‐nosed penetrator with a target consisting of thin alternating layers of silt, sand, and clay. The response of the idealized target was described with an elastic‐plastic constitutive model depending upon two stress invariants and the history of plastic deformation. Interfacial friction between the penetrator and target was assumed to be negligible. Comparisons are made of calculated results and those of nominally similar experiments conducted at the Watching Hill test site in Alberta, Canada. Analysis of these comparisons reveals that numerical methods like the one employed in this study can yield insight into penomena, as well as suggesting possible improvements in the calculation technique.