Dynamic response of aluminum corrugated sandwich subjected to underwater impulsive loading: Experiment and numerical modeling

Huang, Wei; Zhang, Wei; Huang, Xianglin; Jiang, Xingliang; Liu, Ying; Zhang, Lei

doi:10.1016/j.ijimpeng.2017.06.002

Cited by 41 publications

(13 citation statements)

References 34 publications

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“…Wei et al. [16–19] used the 3 D digital imaging correlation method to study the dynamic response and dynamic failure of different metallic sandwich structures. The study mainly focused on the effect of varying structural attributes and material properties on dynamic response parameters such as response time, response rate, in-plane strain history, and the deformation evolution.…”

Section: Introductionmentioning

confidence: 99%

Anomalous dynamic response and failure of sandwich structures subjected to underwater impulsive loads

Huang

Deng

Zhou

et al. 2020

Jnl of Sandwich Structures & Materials

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Dynamic response of metallic sandwich structures subjected to water-based impulsive loadings is analyzed experimentally. The effects of the core, the impulsive intensity, and the loading area on the transmitted impulse, transverse deflection, failure modes, and associated mechanisms are identified and quantified. The four kinds of sandwich structures with the weak face–core interface strength are subjected to underwater impulses of three intensities, with a divergent underwater explosive simulator. The results show that the asymmetric failure mode and reverse deformation caused by the counterintuitive behavior are significant failure modes for the sandwich structures. This anomalous response is confirmed to depend on the effects of the core, the impulsive intensity, and the loading area. The core effect influences the magnitude and the asymmetric distribution of transmitted impulse, which is considered as the main reason for the counterintuitive behavior of sandwich structures. The deflection of the sandwich panels, as well as the failure modes, is also discussed.

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Section: Introductionmentioning

confidence: 99%

Anomalous dynamic response and failure of sandwich structures subjected to underwater impulsive loads

Huang

Deng

Zhou

et al. 2020

Jnl of Sandwich Structures & Materials

Self Cite

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“…This was attributed to micro inertia. The underwater impulsive loading behavior of an aluminum sandwich structure with the trapezoidal corrugated core has been recently investigated both experimentally and numerically, and it was shown that the corrugated sandwich plates suffered significantly smaller rear face deflection than solid plates of similar mass per area in air‐backed condition . The effect of polymer foam filling on the blast performance of corrugated steel core sandwich panels was determined by air blast experiments .…”

Section: Introductionmentioning

confidence: 99%

Impact loading and modelling a multilayer aluminium corrugated/fin core: The effect of the insertion of imperfect fin layers

Sarıkaya

Taşdemirci

Güden

2019

Strain

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The quasi‐static compression (0.0048 m/s) and Taylor‐like impact (135, 150, and 200 m/s) loading of a multilayer 1050 H14 aluminium corrugated core were investigated both experimentally and numerically in LS‐DYNA using the perfect and imperfect sample models. In the imperfect sample models, one or two layers of corrugated fin structure were replaced by the fin layers made of bent‐type cell walls. The localised deformation in the quasi‐static imperfect models of cylindrical sample started at the imperfect layers, the same as the tests, and the layers were compressed until about the densification strain in a step‐wise fashion. The localised deformation in the perfect models, however, started at the layers at and near the top and bottom of the test sample. In the shock mode, the sample crushed sequentially starting at the impact end layer regardless the perfect or imperfect sample models were used. Furthermore, the perfect and imperfect models resulted in nearly the same initial crushing stresses in the shock mode. The layer strain histories revealed a velocity‐dependent layer densification strain. Both model types, the imperfect and perfect, well approximated the stress‐time histories and layer deformations of the shock mode. The rigid perfectly plastic locking model based on the numerically determined densification strains also showed well agreements with the experimental and numerical plateau stresses of the shock mode.

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“…Besides that, various derivative configurations from traditional corrugated cores, including the hierarchical [15,16], foam-filled [17][18][19], multi-layered [20,21], and even hybrid form [22,23] have been proposed for further improving the mechanical performance. Some researches [24,25] have also explored the protective capacity of corrugated core sandwich panels subjected to underwater explosion or wet-sand impulse.…”

Section: Introductionmentioning

confidence: 99%

Multi-objective optimization for designing metallic corrugated core sandwich panels under air blast loading

Cai

Zhang

Dai

et al. 2019

Jnl of Sandwich Structures & Materials

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This research aims to improve the blast performance of trapezoidal corrugated core sandwich panel under air blast loading. A finite element model for the prediction of dynamic responses of trapezoidal corrugated core sandwich panel was first proposed and validated by experiments. Based on the simulation results, kriging models were established to approximate the relationships between design variables and blast performances, and correlation analyses were carried out to investigate the effects of the design variables on the maximum back face deflection and specific energy absorption. It is found that any decrease in maximum back face deflection would always lead to undesirable deterioration in specific energy absorption, and the correlation relationships are associated with the stand-off distance. Using the developed kriging models, multi-objective design optimization was performed to seek trade-off solutions for the trapezoidal corrugated core sandwich panel under specific and variable stand-off distances. Results show that the design on Pareto fronts depended upon stand-off distance. Comparisons of the blast performance between optimized designs and initial designs turned out that there indeed existed a great potential in performance improvement. Importantly, careful examination of the responses of the optimized designs revealed some valuable design methods which should be useful for the engineering applications of trapezoidal corrugated core sandwich panel.

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Dynamic response of aluminum corrugated sandwich subjected to underwater impulsive loading: Experiment and numerical modeling

Cited by 41 publications

References 34 publications

Anomalous dynamic response and failure of sandwich structures subjected to underwater impulsive loads

Anomalous dynamic response and failure of sandwich structures subjected to underwater impulsive loads

Impact loading and modelling a multilayer aluminium corrugated/fin core: The effect of the insertion of imperfect fin layers

Multi-objective optimization for designing metallic corrugated core sandwich panels under air blast loading

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