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Investigation of the effect of wavy honeycomb on the bending performance of the sandwich structure
Journal of Sandwich Structures & Materials ( IF 3.5 ) Pub Date : 2022-06-14 , DOI: 10.1177/10996362221108973
Alparslan Solak 1 , Birgül A Temiztaş 1 , Berna Bolat 1
Affiliation  

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.



中文翻译:

波纹蜂窝对夹层结构弯曲性能影响的研究

夹层结构经常用于需要轻质和强度的结构区域。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研究波浪参数对夹层结构的影响。从使用 Ls-Dyna 创建的模型的弯曲测试中获得的数据与文献中的实验数据进行了比较。实验中的峰值力与 Ls-Dyna 之间存在 3.05% 的差异。力-变形图是连贯的,夹层结构在弯曲过程中的渐进图像是相似的。此外,使用理论方法,确定了弯曲过程中的最大力和塌陷量。理论方法和 Ls-Dyna 值之间存在 3.1% 的差异。因此,验证了 Ls-Dyna 模型。蜂窝的扁平细胞壁被建模为正弦波。使用了四个波数和波幅。这样,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值力和比能量吸收(SEA)提高了7-110%。这项研究将有助于设计新的夹层结构。

更新日期:2022-06-15
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