Metal sandwich plates optimized for pressure impulses

Hutchinson, John W.; Xue, Zhenyu

doi:10.1016/j.ijmecsci.2004.10.012

Cited by 210 publications

(155 citation statements)

References 10 publications

(39 reference statements)

Supporting

Mentioning

151

Contrasting

Order By: Relevance

“…Recent experiments have shown that the back face deflections of centrally loaded edge clamped sandwich panels can be significantly less than equivalent areal density solid plates subjected to the same loading [3][4][5][6][7][8]. Theoretical assessments indicate this beneficial effect arises from two phenomena: a reduction in the impulse acquired by the sandwich panel front face as a result of a fluid-structure interaction (FSI) effect [3,4,[8][9][10] and the higher flexural stiffness and strength of the sandwich. It has also been experimentally shown that the forces transmitted to supports when rigid back supported sandwich panels are impulsively loaded in water are significantly less than equivalent solid plates [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Response of metallic pyramidal lattice core sandwich panels to high intensity impulsive loading in air

Dharmasena

Wadley

Williams³

et al. 2011

International Journal of Impact Engineering

Self Cite

120

View full text Add to dashboard Cite

Small scale explosive loading of sandwich panels with low relative density pyramidal lattice cores have been used to study the large scale bending and fracture response of a model sandwich panel system in which the core has little stretch resistance. The panels were made from a ductile stainless steel and the practical consequence of reducing the sandwich panel face sheet thickness to induce a recently predicted beneficial fluidstructure interaction (FSI) effect was investigated. The panel responses are compared to those of monolithic solid plates of equivalent areal density. The specific impulse imparted to the panels was varied from1.5 to 7.6 kPa.s by changing the standoff distance between the charge center and the front face of the panels. A decoupled finite element model has been used to computationally investigate the dynamic response of the panels.It predicts panel deformations well and is used to identify the deformation time sequence and the face sheet and core failure mechanisms. The study shows that efforts to use thin face sheets to exploit FSI benefits are constrained by dynamic fracture of the front face and that this failure mode is in part a consequence of the high strength of the inertially stabilized trusses. Even though the pyramidal lattice core offers little in-plane stretch resistance, and the FSI effect is negligible during loading by air, the sandwich panels are found to suffer slightly smaller back face deflections and transmit smaller vertical component forces to the supports compared to equivalent monolithic plates.

show abstract

Section: Introductionmentioning

confidence: 99%

“…After the beneficial FSI effect had been confirmed in water [2][3][4][5][6][7][8], numerous sandwich panel concepts for impulse and pressure mitigation have been explored [7][8][9][10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Response of metallic pyramidal lattice core sandwich panels to high intensity impulsive loading in air

Dharmasena

Wadley

Williams³

et al. 2011

International Journal of Impact Engineering

Self Cite

120

View full text Add to dashboard Cite

show abstract

“…The background to the present study is the recent discovery that metal sandwich plates can be designed to sustain smaller deflections than monolithic solid plates of the same weight when subject to intense pressure pulses, particularly when the pulse is transmitted through water [Xue and Hutchinson 2003;Xue and Hutchinson 2004a;Xue and Hutchinson 2004b;Hutchinson and Xue 2005]. The core plays a critical role in the performance of the sandwich plate: typically, it must be able to absorb more than one half of the initial kinetic energy imparted to the plate by crushing in the early stages of deformation prior to significant overall bending and stretching without unduly reducing the separation between the face sheets.…”

Section: Introductionmentioning

confidence: 99%

Metal sandwich plates with polymer foam-filled cores

Vaziri

Xue

Hutchinson

2006

JOMMS

Self Cite

View full text Add to dashboard Cite

The role of low-density structural polymeric foams filling the interstices of the cores of metal sandwich plates is studied to ascertain the strengthening of the cores and the enhancement of plate performance under crushing and impulsive loads. Square honeycomb and folded plate steel cores filled with two densities of structural foams are studied. The foam makes direct contributions to core strength and stiffness, but its main contribution is in supplying lateral support to core members thereby enhancing the buckling strength of these members. Performance is assessed at fixed total weight of the sandwich plate such that the weight of the foam is traded against that of the metal. The outcome of the comparative study suggests that plates with foam-filled cores can perform as well, or nearly as well, as plates of the same weight with unfilled cores. The decision on use of foams in the cores is therefore likely to rest on multifunctional advantages such as acoustic and thermal insulation or environmental isolation of core interstices.

show abstract

“…Several numerical and theoretical studies on FSI have focused on the response of metallic monolithic and sandwich structures (Deshpande and Fleck, 2005;Hutchinson and Xue, 2005;Liang et al, 2007;McMeeking et al, 2007). Schiffer and Tagarielli (2014a) investigated theoretically the response of circular elastic composite plates subject to underwater blast, by † Shock waves are intended here as discontinuities in the pressure distribution, propagating at sonic speed.…”

Section: Review Of Theoretical and Numerical Work On Underwater Blastmentioning

confidence: 99%

The response of circular composite plates to underwater blast: Experiments and modelling

Schiffer

Tagarielli

2015

Journal of Fluids and Structures

View full text Add to dashboard Cite

show abstract

Metal sandwich plates optimized for pressure impulses

Cited by 210 publications

References 10 publications

Response of metallic pyramidal lattice core sandwich panels to high intensity impulsive loading in air

Response of metallic pyramidal lattice core sandwich panels to high intensity impulsive loading in air

Metal sandwich plates with polymer foam-filled cores

The response of circular composite plates to underwater blast: Experiments and modelling

Contact Info

Product

Resources

About