This paper presents a one-dimensional analysis for the blast response of a sandwich beam/wide plate with a compressible core. The dynamic version of the recently developed extended high-order sandwich panel theory (EHSAPT) is first formulated. Material, geometric, and loading parameters are taken from blast experiments reported in literature. The novelty of EHSAPT is that it includes axial rigidity of the core and allows for three generalized coordinates in the core (the axial and transverse displacements at the centroid of the core and the rotation at the centroid of the core) instead of just one (shear stress in the core) of the earlier high-order sandwich panel theory (HSAPT). The solution procedure to determine the dynamic response to a general load applied on the top face sheet of a general asymmetric simply supported configuration is outlined. Although the dynamic EHSAPT is formulated in its full nonlinear version, the solution is for the linear problem so the accuracy of EHSAPT, along with the other theories, can be assessed by comparison to an available dynamic elasticity solution. Results show that the EHSAPT is very accurate and can capture the complex dynamic phenomena observed during the initial, transient phase of blast loading.

References

References
1.
Allen
,
H.G.
,
1969
,
Analysis and Design of Structural Sandwich Panels
,
Pergamon Press
,
Oxford
, UK.
2.
Plantema
,
F.J.
,
1966
,
Sandwich Construction
,
Wiley
,
New York
.
3.
Kardomateas
,
G.A.
, and
Phan
,
C. N.
,
2011
, “
Three-Dimensional Elasticity Solution for Sandwich Beams/Wide Plates With Orthotropic Phases: the Negative Discriminant Case
,”
J. Sandwich Struct. Mat.
,
13
(
6
), pp.
641
661
.10.1177/1099636211419127
4.
Gardner
,
N.
,
Wang
,
E.
,
Kumar
,
P.
, and
Shukla
,
A.
,
2011
, “
Blast Mitigation in a Sandwich Composite Using Graded Core and Polyurea Interlayer
,”
Exper. Mech.
,
52
(
2
), pp.
119
133
.10.1007/s11340-011-9517-9
5.
Jackson
,
M.
, and
Shukla
,
A.
,
2011
, “
Performance of Sandwich Composites Subjected to Sequential Impact and Air Blast Loading
,”
Composit. B Eng.
,
42
(
2
), pp.
155
166
.10.1016/j.compositesb.2010.09.005
6.
Wang
,
E.
, and
Shukla
,
A.
,
2011
, “
Blast Performance of Sandwich Composites With In-Plane Compressive Loading
,”
Exper. Mech.
,
52
(
1
), pp.
49
58
.10.1007/s11340-011-9500-5
7.
Tekalur
,
S. A.
,
Bogdanovich
A. E.
, and
Shukla
,
A.
,
2009
, “
Shock Loading Response of Sandwich Panels With 3-D Woven E-Glass Composite Skins and Stitched Foam Core
,”
Compos. Sci. Tech.
,
69
(
6
), pp.
736
753
.10.1016/j.compscitech.2008.03.017
8.
Wang
,
E.
,
Gardner
,
N.
, and
Shukla
,
A.
,
2009
, “
The Blast Resistance of Sandwich Composites With Stepwise Graded Cores
,”
Int. J. Solid. Struct.
,
46
(
18
), pp.
3492
3502
.10.1016/j.ijsolstr.2009.06.004
9.
Frostig
,
Y.
,
Baruch
,
M.
,
Vilnay
O.
, and
Sheinman
I.
,
1992
, “
High-Order Theory for Sandwich-Beam Behavior With Transversely Flexible Core
,”
J. Eng. Mech.
,
118
(
5
), pp.
1026
1043
.10.1061/(ASCE)0733-9399(1992)118:5(1026)
10.
Phan
,
C. N.
,
Frostig
,
Y.
, and
Kardomateas
,
G. A.
,
2012
, “
Analysis of Sandwich Panels With a Compliant Core and With In-Plane Rigidity-Extended High-Order Sandwich Panel Theory Versus Elasticity
,”
ASME J. Appl. Mech.
,
79
, p.
041001
.10.1115/1.4005550
11.
Kardomateas
,
G. A.
,
Frostig
,
Y.
, and
Phan
,
C. N.
,
2012
, “
Dynamic Elasticity Solution for the Transient Blast Response of Sandwich Beams/Wide Plates
,
AIAA J.
, 51(2), pp. 485–491.10.2514/1.J051885
12.
Schwarts-Givli
,
H.
,
Rabinovitch
,
O.
, and
Frostig
,
Y.
,
2008
, “
Free Vibration of Delaminated Unidirectional Sandwich Panels With a Transversely Flexible Core and General Boundary Conditions—A High Order Approach
,”
J. Sandwich Struct. Mat.
,
10
(
2
), pp.
99
131
.10.1177/1099636207076484
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