Investigation of the effect of wavy honeycomb on the bending performance of the sandwich structure

IF 3.5 3区材料科学 Q1 ENGINEERING, MECHANICAL

Journal of Sandwich Structures & Materials Pub Date : 2022-06-01 DOI:10.1177/10996362221108973

Alparslan Solak, B. A. Temiztas, Berna Bolat

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引用次数: 2

Abstract

Sandwich structures are frequently used in structural areas where lightness and strength are essential. These structures are indispensable for sailing boats, and ground and air vehicles. The base purpose of this study is to investigate the effect of wave parameters on the sandwich structure. The data obtained from the bending tests of the model created using Ls-Dyna was compared with the experimental data of the literature. There is a 3.05% difference between the peak force in experimental and Ls-Dyna. The force-deformation plots are coherent, and the progressive images of the sandwich structure during bending are similar. In addition, using theoretical approaches, the highest force and the amount of collapse during bending were determined. There is a difference of 3.1% between the theoretical approach and Ls-Dyna values. Thus, the Ls-Dyna model was validated. The flat cell walls of the honeycomb were modeled as a sine wave. Four wave numbers and wave amplitudes were used. In this way, 16 different analysis files were created. The results show that the new sandwich structure’s specific peak force and specific energy absorption (SEA) increased by 7–110% compared to the ordinary flat walled sandwich structure. This research will assist in the design of new sandwich structures.

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波浪蜂窝对夹层结构弯曲性能影响的研究

夹层结构经常用于结构领域的轻便和强度是必不可少的。这些结构对于帆船、地面和空中交通工具是必不可少的。本研究的基本目的是探讨波浪参数对夹层结构的影响。利用Ls-Dyna建立的模型的弯曲试验数据与文献的实验数据进行了比较。实验得到的峰值力与Ls-Dyna的峰值力相差3.05%。受力变形图是一致的，夹层结构在弯曲过程中的渐进图像是相似的。此外，采用理论方法，确定了弯曲过程中的最大受力和坍塌量。理论方法与Ls-Dyna值之间的差异为3.1%。因此，Ls-Dyna模型得到了验证。蜂窝的扁平细胞壁被建模为正弦波。使用了四种波数和波幅。通过这种方式，创建了16个不同的分析文件。结果表明:与普通平壁夹层结构相比，新型夹层结构的比峰力和比能吸收提高了7 ~ 110%;这项研究将有助于新的夹层结构的设计。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Sandwich Structures & Materials 工程技术-材料科学：表征与测试

CiteScore

9.60

自引率

2.60%

发文量

审稿时长

7 months

期刊介绍： The Journal of Sandwich Structures and Materials is an international peer reviewed journal that provides a means of communication to fellow engineers and scientists by providing an archival record of developments in the science, technology, and professional practices of sandwich construction throughout the world. This journal is a member of the Committee on Publication Ethics (COPE).