An analytical model for the response to water blast of unsupported metallic sandwich panels

Robert Maxwell McMeeking, A. V. Spuskanyuk, He M.Y., V. S. Deshpande, N. A. Fleck, A. G. Evans

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

A prior assessment of the response of a metallic sandwich panels to water blast has identified soft and strong core responses and outlined the advantages of softness. Ensuing analysis has provided mechanism maps that distinguish these responses. The present article extends these assessments by developing an analytic model for the wet face response, inclusive of fluid/structure interaction, that can be used for a wide range of core topologies. The model addresses cavitation and incorporates the momentum of reconstituted water attached to the wet face. It assumes a transient dynamic strength of the core associated with dynamic buckling. The model includes coefficients that have been independently characterized using numerical simulations. The fidelity of the analytic model has also been assessed using simulations. The results reveal that analytic predictions of the wet face velocities are quite accurate for most of the soft cores examined. The implication is that the models may be used as reliable input to panel-level simulations for predicting such metrics as the reaction forces and the displacements. Discrepancies arise for strong cores with relatively large push back stress, and for systems with very thin wet faces, suggesting that embellishments are required for panels incorporating such features.
Original languageEnglish
Pages (from-to)478-496
Number of pages19
JournalInternational Journal of Solids and Structures
Volume45
Issue number2
DOIs
Publication statusPublished - 2008

Fingerprint

Blast
Sandwich
blasts
Analytical Model
Analytical models
Water
Face
water
Dynamic Buckling
Transient Dynamics
softness
Model
simulation
Cavitation
Fluid structure interaction
buckling
cavitation flow
Fidelity
Buckling
Discrepancy

Cite this

An analytical model for the response to water blast of unsupported metallic sandwich panels. / McMeeking, Robert Maxwell; Spuskanyuk, A. V.; M.Y., He; Deshpande, V. S.; Fleck, N. A.; Evans, A. G.

In: International Journal of Solids and Structures, Vol. 45, No. 2, 2008, p. 478-496.

Research output: Contribution to journalArticle

McMeeking, Robert Maxwell ; Spuskanyuk, A. V. ; M.Y., He ; Deshpande, V. S. ; Fleck, N. A. ; Evans, A. G. / An analytical model for the response to water blast of unsupported metallic sandwich panels. In: International Journal of Solids and Structures. 2008 ; Vol. 45, No. 2. pp. 478-496.
@article{3100d2fb74e64666a767f3ef7cffd8df,
title = "An analytical model for the response to water blast of unsupported metallic sandwich panels",
abstract = "A prior assessment of the response of a metallic sandwich panels to water blast has identified soft and strong core responses and outlined the advantages of softness. Ensuing analysis has provided mechanism maps that distinguish these responses. The present article extends these assessments by developing an analytic model for the wet face response, inclusive of fluid/structure interaction, that can be used for a wide range of core topologies. The model addresses cavitation and incorporates the momentum of reconstituted water attached to the wet face. It assumes a transient dynamic strength of the core associated with dynamic buckling. The model includes coefficients that have been independently characterized using numerical simulations. The fidelity of the analytic model has also been assessed using simulations. The results reveal that analytic predictions of the wet face velocities are quite accurate for most of the soft cores examined. The implication is that the models may be used as reliable input to panel-level simulations for predicting such metrics as the reaction forces and the displacements. Discrepancies arise for strong cores with relatively large push back stress, and for systems with very thin wet faces, suggesting that embellishments are required for panels incorporating such features.",
author = "McMeeking, {Robert Maxwell} and Spuskanyuk, {A. V.} and He M.Y. and Deshpande, {V. S.} and Fleck, {N. A.} and Evans, {A. G.}",
year = "2008",
doi = "10.1016/j.ijsolstr.2007.08.003",
language = "English",
volume = "45",
pages = "478--496",
journal = "International Journal of Solids and Structures",
issn = "0020-7683",
publisher = "Elsevier Limited",
number = "2",

}

TY - JOUR

T1 - An analytical model for the response to water blast of unsupported metallic sandwich panels

AU - McMeeking, Robert Maxwell

AU - Spuskanyuk, A. V.

AU - M.Y., He

AU - Deshpande, V. S.

AU - Fleck, N. A.

AU - Evans, A. G.

PY - 2008

Y1 - 2008

N2 - A prior assessment of the response of a metallic sandwich panels to water blast has identified soft and strong core responses and outlined the advantages of softness. Ensuing analysis has provided mechanism maps that distinguish these responses. The present article extends these assessments by developing an analytic model for the wet face response, inclusive of fluid/structure interaction, that can be used for a wide range of core topologies. The model addresses cavitation and incorporates the momentum of reconstituted water attached to the wet face. It assumes a transient dynamic strength of the core associated with dynamic buckling. The model includes coefficients that have been independently characterized using numerical simulations. The fidelity of the analytic model has also been assessed using simulations. The results reveal that analytic predictions of the wet face velocities are quite accurate for most of the soft cores examined. The implication is that the models may be used as reliable input to panel-level simulations for predicting such metrics as the reaction forces and the displacements. Discrepancies arise for strong cores with relatively large push back stress, and for systems with very thin wet faces, suggesting that embellishments are required for panels incorporating such features.

AB - A prior assessment of the response of a metallic sandwich panels to water blast has identified soft and strong core responses and outlined the advantages of softness. Ensuing analysis has provided mechanism maps that distinguish these responses. The present article extends these assessments by developing an analytic model for the wet face response, inclusive of fluid/structure interaction, that can be used for a wide range of core topologies. The model addresses cavitation and incorporates the momentum of reconstituted water attached to the wet face. It assumes a transient dynamic strength of the core associated with dynamic buckling. The model includes coefficients that have been independently characterized using numerical simulations. The fidelity of the analytic model has also been assessed using simulations. The results reveal that analytic predictions of the wet face velocities are quite accurate for most of the soft cores examined. The implication is that the models may be used as reliable input to panel-level simulations for predicting such metrics as the reaction forces and the displacements. Discrepancies arise for strong cores with relatively large push back stress, and for systems with very thin wet faces, suggesting that embellishments are required for panels incorporating such features.

U2 - 10.1016/j.ijsolstr.2007.08.003

DO - 10.1016/j.ijsolstr.2007.08.003

M3 - Article

VL - 45

SP - 478

EP - 496

JO - International Journal of Solids and Structures

JF - International Journal of Solids and Structures

SN - 0020-7683

IS - 2

ER -