Numerical study on mechanical behavior of foam core sandwich plates under repeated impact loadings

Guo, Kailing; Zhu, Ling; Li, Yinggang; Yu, Tongxi

doi:10.1016/j.compstruct.2019.111030

Cited by 35 publications

(9 citation statements)

References 17 publications

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“…Such a principle normally results in vast material damage or overall structural failure after the initial impact, which inevitably destroys the load-bearing capacity and can be barely applied for withstanding multiple or repeated impact loadings. However, as a typical and frequently occurred impact case, the issue subjected to repeated dynamic loadings is practically important for the permanent deformation and the residual mechanical properties [22,23] . How to design novel energy absorption structures to efficiently mitigate kinetic energy under repeated impact loadings remains a challenge, always drawing significant attention.…”

Section: Introductionmentioning

confidence: 99%

Dynamic failure of 3D printed negative-stiffness meta-sandwich structures under repeated impact loadings

Gan

et al. 2023

Composites Science and Technology

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Section: Introductionmentioning

confidence: 99%

Dynamic failure of 3D printed negative-stiffness meta-sandwich structures under repeated impact loadings

Gan

et al. 2023

Composites Science and Technology

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“…As a composite material, the aluminum foam sandwich panel has good impact resistance and energy absorption owing to the energy absorption of aluminum foam and the high strength of steel, which is widely used in many protective structures in the aerospace and automobile industry [1][2][3]. Moreover, it has attracted many scholars to simulate and study its quasi-static and dynamic mechanical properties [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Mechanical response of aluminum foam sandwich structure under impact load

Zhang

2022

Mater. Res. Express

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This study investigates the mechanical response of aluminum foam sandwich panels, sandwich cylindrical shells, and sandwich shallow shells under impact loads. First, a finite element model of the sandwich panel was established, and an impact load was applied. The numerical results were compared with theoretical and experimental results to verify the model's effectiveness. Second, the energy absorption efficiency and overall deformation of sandwich panels, sandwich cylindrical shells, and sandwich shallow shells under the same impact load were studied. The research shows that the energy absorption performance of the sandwich shells is better than that of the sandwich panels, and the overall deformation is less than that of the sandwich panels. The effect of increasing panel thickness on the two types of sandwich shell studies is based on this basis. The conclusions describe that increasing the panel thickness will significantly reduce the structure's energy absorption efficiency and deformation. Finally, the effect of single-and double-layer structure on the impact resistance of sandwich shells was studied when the total thickness of the sandwich structure was unchanged. The results show that compared with the single-layer structure, the energy absorption efficiency, overall deformation, and contact force between the projectile and structure of the double-layer structure will be reduced.

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“…Further work regarding foam is performed by Zhang et al [27] and Rostamiyan and Norouzi [28] where the former is dedicated to experimental characterization and modeling whereas the latter investigates the properties of foam in a sandwich structural element. Modeling and validation of energy absorption in foam is performed by Guo et al [29]. Honeycomb cores have been studied by Aktay et al [30], Nayak et al [31], Liu et al [32] and have been shown to exhibit excellent lightweight properties.…”

Section: Introductionmentioning

confidence: 99%

Ultra high strength steel sandwich for lightweight applications

et al. 2020

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Methods for reducing weight of structural elements are important for a sustainable society. Over the recent years ultra high strength steel (UHSS) has been a successful material for designing light and strong components. Sandwich panels are interesting structural components to further explore areas where the benefits of UHSS can be utilized. The specific properties of sandwich panels make them suitable for stiffness applications and various cores have been studied extensively. In the present work, bidirectionally corrugated UHSS cores are studied experimentally and numerically. A UHSS core is manufactured by cold rolling and bonded to the skins by welding. Stiffness is evaluated experimentally in three-point bending. The tests are virtually reproduced using the finite element method. Precise discretization of the core requires large amounts of computational power, prolonging lead times for sandwich component development, which in the present work is addressed by homogenization, using an equivalent material formulation. Input data for the equivalent models is obtained by characterizing representative volume elements of the periodic cores under periodic boundary conditions. The homogenized panel reduces the number of finite elements and thus the computational time while maintaining accuracy. Numerical results are validated and agree well with experimental testing. Important findings from experimental and simulation results show that the suggested panels provide superior specific bending stiffness as compared to solid panels. This work shows that lightweight UHSS sandwiches with excellent stiffness properties can be manufactured and modeled efficiently. The concept of manufacturing a UHSS sandwich panel expands the usability of UHSS to new areas.

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Numerical study on mechanical behavior of foam core sandwich plates under repeated impact loadings

Cited by 35 publications

References 17 publications

Dynamic failure of 3D printed negative-stiffness meta-sandwich structures under repeated impact loadings

Dynamic failure of 3D printed negative-stiffness meta-sandwich structures under repeated impact loadings

Mechanical response of aluminum foam sandwich structure under impact load

Ultra high strength steel sandwich for lightweight applications

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