Journal ArticleDOI
The dynamic response of sandwich panels with cellular metal cores to localized impulsive loading
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In this article, the deformation/failure modes and dynamic response of peripherally clamped square monolithic and sandwich panels of localized impulsive loading were investigated experimentally by metallic foam projectile impact.Abstract:
The deformation/failure modes and dynamic response of peripherally clamped square monolithic and sandwich panels of localized impulsive loading were investigated experimentally by metallic foam projectile impact. The sandwich panels comprise three different types of cellular metallic cores, i.e., closed-cell aluminum foam core, open-cell aluminum foam core and aluminum honeycomb core. Experimental results show that all the sandwich panels present mainly large global inelastic deformation with obvious local compressive failure in the central area, except for those open-cell foam core sandwich panels. The dynamic response of sandwich panels is sensitive to the applied impulse and their geometrical configurations. Based on the experimental investigation, a theoretical analysis was developed to predict the dynamic response of sandwich panels by employing a comprehensive yield locus and a modified classic monolithic panel theory. A comparison of experimental results and theoretic predictions was made, and a good agreement was then found. These findings are very useful to guide the engineering applications of metallic sandwich structures for the protection purpose.read more
Citations
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Journal ArticleDOI
Experimental study on the dynamic responses of foam sandwich panels with different facesheets and core gradients subjected to blast impulse
Guangyong Sun,Guangyong Sun,Erdong Wang,Jingtao Zhang,Shiqiang Li,Shiqiang Li,Yong Zhang,Qing Li +7 more
TL;DR: In this paper, the deformation/failure modes of sandwich panels against blast impulse were investigated experimentally, and it was shown that the back facesheet deflection increases linearly with the impulse, apart from the petal-tearing failure of front facesheet.
Journal ArticleDOI
A review of the recent trends on core structures and impact response of sandwich panels
TL;DR: In this article, the authors present a challenging task to advance the excellent strength and structural performance of sandwich structures, while continuing to reduce the weight and cost parameters of the sandwich structures.
Journal ArticleDOI
Experimental study on the dynamic response of foam-filled corrugated core sandwich panels subjected to air blast loading
TL;DR: In this article, effective approaches to enhance the blast resistance of sandwich structures with corrugated cores were developed by adopting three different strategies to fill the spaces within cores with polymeric foam.
Journal ArticleDOI
Dynamic response and failure of PVC foam core metallic sandwich subjected to underwater impulsive loading
TL;DR: In this paper, the effect of load intensity, core density and core height under air-backed and water-backed conditions on the deformation and failure of composite sandwich structures with metallic facesheets and PVC foam cores was investigated.
Journal ArticleDOI
Optimal design of sandwich panels with layered-gradient aluminum foam cores under air-blast loading
TL;DR: In this article, the dynamic response and design optimization of clamped sandwich panels comprising two aluminum alloy face-sheets and a layered-gradient closed-cell aluminum foam core subjected to air-blast loading were examined.
References
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Book
Cellular Solids: Structure and Properties
Lorna J. Gibson,Michael F. Ashby +1 more
TL;DR: The linear elasticity of anisotropic cellular solids is studied in this article. But the authors focus on the design of sandwich panels with foam cores and do not consider the properties of the materials.
Book
Metal Foams: A Design Guide
Michael F. Ashby,Anthony G. Evans,Norman A. Fleck,Lorna J. Gibson,John W. Hutchinson,Hng Wadley,Feridun Delale +6 more
TL;DR: In this paper, the authors present a model for making metal foams characterisation methods and properties of metal foam, and a constitutive model for metal foam design for Creep with Metal Foams Sandwich Structures Energy Management: Packaging and Blast Protection Sound Absorption and Vibration Suppression Thermal Management and Heat Transfer Electrical Properties of metal Foams Cutting, Finishing and Joining Cost Estimation and Viability Case Studies Suppliers of Metal Foam Web Sites Index
BookDOI
Energy absorption of structures and materials
Guoxing Lu,Tongxi Yu +1 more
TL;DR: Lu et al. as mentioned in this paper focused on the way in which structures and materials can be designed to absorb kinetic energy in a controllable and predictable manner, and synthesized the most recent developments and latest research to form a detailed and comprehensive treatment of the subject.
Journal ArticleDOI
The Resistance of Clamped Sandwich Beams to Shock Loading
Norman A. Fleck,Vikram Deshpande +1 more
TL;DR: In this article, the structural response of the sandwich beam is split into three sequential steps: stage I is the one-dimensional fluid-structure interaction problem during the blast loading event, and results in a uniform velocity of the outer face sheet; during stage II the core crushes and the velocities of the faces and core become equalized by momentum sharing; stage III is the retardation phase over which the beam is brought to rest by plastic bending and stretching.
Journal ArticleDOI
Compressive Strain at the Onset of Densification of Cellular Solids
TL;DR: In this paper, the authors defined the onset strain of densification and the densification strain are defined and distinguished in the present study, and the method based on the energy absorption efficiency curve gives unique and consistent results.