Mitigating performance of elastic graded polymer foam coating subjected to underwater shock

Chen, Yong; Chen, Feng; Du, Zhipeng; Wang, Yu; Hu, Hua

doi:10.1016/j.compositesb.2014.10.029

Cited by 14 publications

(4 citation statements)

References 23 publications

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“…These studies include nonlinearly varying continuously graded structures, [49] structures with variable cross sections, [56] and middle-high and middle-low density-graded foams. [51] Chen et al [57,58] studied the dynamic behavior of graded foams using the fluid structure interaction method, wherein the foam samples were subject to underwater blast loading. Hightemperature dynamic response of graded cellular structures was investigated by Liu et al, [59] analyzing the influence of the thermal environment on the impact energy mitigation response of density-graded foams using finite-element simulations.…”

Section: Characterization Of the Mechanical Response Of Graded Foamsmentioning

confidence: 99%

Density‐Graded Cellular Solids: Mechanics, Fabrication, and Applications

et al. 2021

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Cellular solids have gained extensive popularity in different areas of engineering due to their unique physical and mechanical properties. Recent advancements in manufacturing technologies have led to the development of cellular solids with highly controllable microstructures and properties modulated for multiple functionalities at low structural weights. The concept of density gradation in cellular solids has recently gained attention due to its potentials in opening new doors to the development of lightweight structures that offer optimal physical and mechanical properties without compromising their favorable characteristics. Herein, a comprehensive insight into the fundamental concepts, fabrication, and current and potential applications of density‐graded cellular solids in various areas of science and engineering is provided. Cellular solids are broadly classified into two main categories: foams and lattice structures. An overview of the fundamental concepts in each category is presented, followed by details on the characterization approaches and some of the most novel processing techniques utilized in fabricating the structures. The uses of density‐graded structures in load‐bearing, acoustic, and biomedical applications are highlighted. The state of the art in each category and the current trends in application‐specific optimization of density‐graded structures are discussed. The review concludes with an outlook of the future directions in this exciting field.

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Section: Characterization Of the Mechanical Response Of Graded Foamsmentioning

confidence: 99%

Density‐Graded Cellular Solids: Mechanics, Fabrication, and Applications

et al. 2021

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“…Meanwhile, in the underwater blast, lower density foams were helpful to reduce the total impulse transmitted from water to marine structures. 30 Except for the density gradient, Shen et al 27 introduced a stress gradient into hexagon honeycombs and demonstrated that placing the weakest material at the impinged end would lead to higher energy absorption. This indicates that energy-absorption capacities of graded cellular materials depend not only on their microstructures, but also on different graded properties.…”

Section: Introductionmentioning

confidence: 99%

Energy-absorbing performance of graded Voronoi foams

Lin

Zhang

et al. 2019

Journal of Cellular Plastics

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Cellular foams are usually used as energy absorbers in engineering such as cushioning to alleviate the impact energy. To explore their energy absorption property, Voronoi foams with different density gradients were established. Numerical simulations were conducted by using Ls-dyna 971. Two loading conditions were considered: the constant velocity impact and the densification velocity impact. The results indicate that the energy absorption is closely related to loading conditions and profiles of density gradients. Therefore, it is of great importance to select suitable graded foams accordingly. This study paves the way for engineering applications of graded cellular materials as protective devices.

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“…In addition, the dynamic behavior of graded foam subject to underwater blast loading is also evaluated by Chen et al [42,43] by employing the fluid-structure interaction method. However, most above reports on the foam materials are limited to room temperature environment, and the influences of elevated temperature on their dynamic behaviors are often neglected.…”

Section: Introductionmentioning

confidence: 99%