Dynamic response of double-layer rectangular sandwich plates with graded foam cores under blast loading

IF 5.1 2区工程技术 Q1 ENGINEERING, MECHANICAL International Journal of Impact Engineering Pub Date : 2024-10-15 DOI:10.1016/j.ijimpeng.2024.105141

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Abstract

In this paper, dynamic response of a fully clamped double-layer (DL) rectangular sandwich plate with graded foam cores (GFC) under blast loading is studied theoretically and numerically. Based on the yield criterion, an analytical model for dynamic response of a DL rectangular sandwich plate with GFC is established under blast loading. With the use of the inscribing and circumscribing squares of the exact yield locus, the bound of the analytical solution of the dynamic response of a double-layer rectangular sandwich plate with GFC is obtained. By neglecting the effect of bending moments, the membrane mode solution of a DL rectangular sandwich plate with GFC in large deflection is obtained. Finite element analysis (FEA) is performed using ABAQUS/Explicit software. The effects of interlayer factor, average yield strength of graded foams, and gradient properties of graded foams on the dynamic response of DL rectangular sandwich plate with GFC are considered. The analytical predictions are in excellent accord with the numerical ones. It is demonstrated that the proposed analytical model is effective to predict the blast response of a DL rectangular sandwich plate with GFC.

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带有分级泡沫芯材的双层矩形夹层板在爆炸荷载下的动态响应

本文从理论和数值上研究了带有分级泡沫芯材（GFC）的全夹紧双层（DL）矩形夹层板在爆炸荷载下的动态响应。根据屈服准则，建立了带有 GFC 的 DL 矩形夹层板在爆炸荷载下的动态响应分析模型。利用精确屈服点的嵌入方形和圆周方形，得到了带有 GFC 的双层矩形夹心板动态响应解析解的边界。通过忽略弯矩的影响，得到了带有 GFC 的双层矩形夹心板在大挠度下的膜模解。使用 ABAQUS/Explicit 软件进行了有限元分析（FEA）。考虑了层间系数、分级泡沫的平均屈服强度和分级泡沫的梯度特性对带 GFC 的 DL 矩形夹层板动态响应的影响。分析预测结果与数值预测结果非常吻合。结果表明，所提出的分析模型能有效预测带 GFC 的 DL 矩形夹层板的爆炸响应。

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来源期刊

International Journal of Impact Engineering 工程技术-工程：机械

CiteScore

8.70

自引率

13.70%

发文量

241

审稿时长

52 days

期刊介绍： The International Journal of Impact Engineering, established in 1983 publishes original research findings related to the response of structures, components and materials subjected to impact, blast and high-rate loading. Areas relevant to the journal encompass the following general topics and those associated with them: -Behaviour and failure of structures and materials under impact and blast loading -Systems for protection and absorption of impact and blast loading -Terminal ballistics -Dynamic behaviour and failure of materials including plasticity and fracture -Stress waves -Structural crashworthiness -High-rate mechanical and forming processes -Impact, blast and high-rate loading/measurement techniques and their applications