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    Response of Graded Miura-Ori Metamaterials to Quasi-Static and Dynamic In-Plane Compression

    Source: Journal of Aerospace Engineering:;2022:;Volume ( 035 ):;issue: 004::page 04022035
    Author:
    Dora Karagiozova
    ,
    Jianjun Zhang
    ,
    Pengwan Chen
    ,
    Guoxing Lu
    ,
    Zhong You
    DOI: 10.1061/(ASCE)AS.1943-5525.0001416
    Publisher: ASCE
    Abstract: The non-unique relationship between the density and quasi-static strength of Miura-ori metamaterials was explored for graded materials with respect to quasi-static and dynamic in-plane compression. A lower bound estimate of quasi-static strength and energy absorption was obtained using an analytical method by only considering the deformation mechanism of the rigid origami motion. Graded origami metamaterials were achieved by applying either a variation of the initial folding angle or a variation of the thicknesses of cell walls in the loading direction. It was shown that grading by a moderate increase of the initial folding angle does not notably contribute to the overall material strength and consequently to an improvement of the energy absorption efficiency of the metamaterial under quasi-static compression. Grading by wall thickness variation leads to a notable strength increase and moderately enhanced energy absorption. It is shown that the significant strength gradient leads to a violation of the rigid motion rule and the cells collapse sequentially, which has been validated by test results published in the literature. Different from quasi-static behavior, the response of the Miura-ori metamaterial to relatively high velocity impact is governed by the density gradient values, regardless of the grading technique. Furthermore, the differently graded profiles (positive or negative) affect the force-displacement histories but not the energy absorption efficiency of the examined metamaterials.
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      Response of Graded Miura-Ori Metamaterials to Quasi-Static and Dynamic In-Plane Compression

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4283724
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    contributor authorDora Karagiozova
    contributor authorJianjun Zhang
    contributor authorPengwan Chen
    contributor authorGuoxing Lu
    contributor authorZhong You
    date accessioned2022-05-07T21:26:25Z
    date available2022-05-07T21:26:25Z
    date issued2022-03-24
    identifier other(ASCE)AS.1943-5525.0001416.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4283724
    description abstractThe non-unique relationship between the density and quasi-static strength of Miura-ori metamaterials was explored for graded materials with respect to quasi-static and dynamic in-plane compression. A lower bound estimate of quasi-static strength and energy absorption was obtained using an analytical method by only considering the deformation mechanism of the rigid origami motion. Graded origami metamaterials were achieved by applying either a variation of the initial folding angle or a variation of the thicknesses of cell walls in the loading direction. It was shown that grading by a moderate increase of the initial folding angle does not notably contribute to the overall material strength and consequently to an improvement of the energy absorption efficiency of the metamaterial under quasi-static compression. Grading by wall thickness variation leads to a notable strength increase and moderately enhanced energy absorption. It is shown that the significant strength gradient leads to a violation of the rigid motion rule and the cells collapse sequentially, which has been validated by test results published in the literature. Different from quasi-static behavior, the response of the Miura-ori metamaterial to relatively high velocity impact is governed by the density gradient values, regardless of the grading technique. Furthermore, the differently graded profiles (positive or negative) affect the force-displacement histories but not the energy absorption efficiency of the examined metamaterials.
    publisherASCE
    titleResponse of Graded Miura-Ori Metamaterials to Quasi-Static and Dynamic In-Plane Compression
    typeJournal Paper
    journal volume35
    journal issue4
    journal titleJournal of Aerospace Engineering
    identifier doi10.1061/(ASCE)AS.1943-5525.0001416
    journal fristpage04022035
    journal lastpage04022035-17
    page17
    treeJournal of Aerospace Engineering:;2022:;Volume ( 035 ):;issue: 004
    contenttypeFulltext
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