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首页> 外文期刊>Composite Structures >Rectangular sandwich plates with Miura-ori folded core under quasi-static loadings
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Rectangular sandwich plates with Miura-ori folded core under quasi-static loadings

机译：准静态载荷下具有三浦折芯的矩形夹心板

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摘要

This research presents a parametric study by using ABAQUS/Explicit and analytical analysis of rectangular sandwich plates with Miura-ori folded core. Two loading conditions are studied: three-point bending and uniformly distributed pressure loading. Load-displacement curves are obtained and energy absorption performance is assessed. Under three-point bending and uniformly distributed pressure loading of small magnitude, performance of such sandwich plates has been found to be better than that of corresponding monolithic plates of the same mass. In addition, analytical modelling has been conducted based on the plastic hinge theory, which results in a good agreement with those from the finite element analysis (FEA). It has been found that the maximum bending strength is governed by the incipience or fully plastic yielding of the core material for relatively thick cores, or elastic buckling of the core compression for thin cores. Furthermore, the yielding moment, fully plastic bending moment and elastic buckling moment of the incipience of core buckling have been evaluated.
机译：这项研究使用ABAQUS / Explicit进行了参数研究，并对具有Miura-ori折叠芯的矩形夹心板进行了分析。研究了两种载荷条件：三点弯曲和均匀分布的压力载荷。获得了载荷-位移曲线并评估了能量吸收性能。在三点弯曲和均匀分布的小压力载荷下，已发现这种夹层板的性能要好于相同质量的相应整体板。此外，基于塑性铰理论进行了分析建模，这与有限元分析（FEA）的结果相吻合。已经发现，最大弯曲强度由相对厚的芯的芯材料的开始或完全塑性屈服，或由薄芯的芯压缩的弹性屈曲来决定。此外，还评估了铁芯屈曲初期的屈服力矩，全塑性弯曲力矩和弹性屈曲力矩。

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