Blast resistance of auxetic and honeycomb sandwich panels: Comparisons and parametric designs

Imbalzano, Gabriele; Linforth, Steven; Ngo, Tuan; Lee, Peter Vee Sin; Tran, Phuong

doi:10.1016/j.compstruct.2017.03.018

Cited by 351 publications

(130 citation statements)

References 59 publications

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“…is section presents the modal analysis, static analysis, and shock spectrum analysis for the embedded honeycomb using three methods: whole entity modeling, equivalent plate, and multilayered equivalent. e whole entity modeling results are used as a benchmark for comparison [11][12][13][14][15][16][17].…”

Section: Examples and Discussionmentioning

confidence: 99%

Multilayered Equivalent Finite Element Method for Embedded Honeycomb Plates

Haohui

Sheng

2018

Shock and Vibration

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To investigate the mechanical properties of embedded honeycomb plates with high efficiency and accuracy, a new multilayered equivalent finite element method (FEM) model is proposed. A series of FEM numerical studies (modal analysis, static analysis, and shock spectrum analysis) are performed. The goal is to compare the errors produced by the multilayered equivalent method and by existing equivalent approaches. The obtained results indicate that the proposed model shows good agreement with the original plate. Moreover, based on the new model, a parametric study correlating the microstructure parameters (embedded depth/cell size) to modal frequency is proposed, and a multiparameter equation for frequency and embedded depth/cell size is established to serve as a basis for structural optimization design.

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Section: Examples and Discussionmentioning

confidence: 99%

Multilayered Equivalent Finite Element Method for Embedded Honeycomb Plates

Haohui

Sheng

2018

Shock and Vibration

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“…[22] The studies in the field of ballistic loading of auxetic sandwich structures are very limited, [23,24] although some work has been performed in the field of blast loading of composite sandwich panels with auxetic core. [25][26][27][28] In all before mentioned contributions the beneficial influence of using auxetic core is reported. For that reason there is a clear need to investigate if use of such metamaterials would be beneficial also for ballistic loading with fragment simulating projectile (FSP).…”

Section: Introductionmentioning

confidence: 99%

Response of Chiral Auxetic Composite Sandwich Panel to Fragment Simulating Projectile Impact

Novak

Vesenjak

Kennedy

et al. 2019

Physica Status Solidi (b)

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The chiral auxetic cellular structures are fabricated using SEBM (selective electron beam melting) method and tested under compressive loading. The results of experimental testing are used for validation of the computational model in LS-DYNA. Furthermore, ballistic velocity and deformation behaviour of monolithic aluminium (Al 7075-T651) and titanium (Ti-Gr.37) cover plates of composite sandwich panels are experimentally evaluated using a gas gun setup and fragment simulating projectile (FSP). The experimental results are used for validation of computational model of cover plates, which is further used for development of computational model of auxetic composite sandwich panel. It is shown that by using the auxetic sandwich panel, the ballistic performance is enhanced in comparison to the monolithic cover plates.

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“…The NPR materials are a novel class of materials, which have advantages that conventional materials may not possess [22]. Materials with NPR have triggered significant interest in the scientific community because of their unique physical properties [23][24][25][26][27] including high shear modulus, high indentation resistance [28], large plane strain fracture toughness [29], and excellent shock and sound absorption abilities [30,31], and all of which are highly desirable properties for engineering applications. Specifically, the NPR materials can be used in microelectromechanical systems (MEMS) and fastening devices due to their auxetic characteristics, and they can be also added into engineering structures (e.g., sandwich or laminated panels in the aerospace industry) as energy absorption components.…”

Section: Introductionmentioning

confidence: 99%

Temperature-Dependent Mechanical Properties of Graphene/Cu Nanocomposites with In-Plane Negative Poisson’s Ratios

2020

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Negative Poisson’s ratio (NPR), also known as “auxetic”, is a highly desired property in a wide range of future industry applications. By employing molecular dynamics (MD) simulation, metal matrix nanocomposites reinforced by graphene sheets are studied in this paper. In the simulation, single crystal copper with crystal orientation 1 1 0 is selected as the matrix and an embedded-atom method (EAM) potential is used to describe the interaction of copper atoms. An aligned graphene sheet is selected as reinforcement, and a hybrid potential, namely, the Erhart-Albe potential, is used for the interaction between a pair of carbon atoms. The interaction between the carbon atom and copper atom is approximated by the Lennard-Jones (L-J) potential. The simulation results showed that both graphene and copper matrix possess in-plane NPRs. The temperature-dependent mechanical properties of graphene/copper nanocomposites with in-plane NPRs are obtained for the first time.

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Blast resistance of auxetic and honeycomb sandwich panels: Comparisons and parametric designs

Cited by 351 publications

References 59 publications

Multilayered Equivalent Finite Element Method for Embedded Honeycomb Plates

Multilayered Equivalent Finite Element Method for Embedded Honeycomb Plates

Response of Chiral Auxetic Composite Sandwich Panel to Fragment Simulating Projectile Impact

Temperature-Dependent Mechanical Properties of Graphene/Cu Nanocomposites with In-Plane Negative Poisson’s Ratios

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