Finite element analysis of various composite honeycomb cores under tensile loading

Abstract

Sandwich composite structures are widely used in significant applications of many fields such as aerospace, automotive and defense. An increase in the usage of sandwich structures make the researchers focus on investigating the possible various face sheet and core materials which are the main parts of sandwich structures. In recent years, improvements in additive manufacturing methods enabled producing the structures with desired dimensions with less material waste and less production steps. In this study, manufacturing methods of honeycomb cores were examined firstly and then a group of finite element analysis (FEA) were conducted on various composite honeycomb cores with different layer sequences under tension in order to determine their mechanical behaviors. The results exhibited that layer sequence and materials have a great effect on Von-Mises (σvm) and shear stress (τxy) occurring in honeycomb core.

Keywords

• Honeycomb core,Additive manufacturing,Finite element analysis,Composite

References

1. [1]. Ramnatha, BY, Elanchezhiana, C, Manickavasagama, VM, R. Narayanan, RS, Sudharshan, R, Pugazhendhi, G. (2019). A review on sandwich composites and their advancement, Materials Today: Proceedings, 2019, 16, 1146–1151.
2. [2]. Valery, V., Evgeny, V,, Morozov, V. (2007). Advanced Mechanics of Composite Materials (Second Edition), 2007, MECHANICS OF LAMINATES, 5.9 Sandwich structures.
3. [3]. Sivak, P., Delyova, I., Diabelkova, P. (2017). Analysis of Sandwich Structures by the FEM, American Journal of Mechanical Engineering, 5(6), 243-246.
4. [4]. Oterkus, E., Diyaroglu, C., Meo, D.D., Allegri, G. (2016). Fracture modes, damage tolerance and failure mitigation in marine composites. Marine Applications of Advanced Fibre-Reinforced Composites, 79-102.
5. [5]. Vinson, J.R. (2005). Sandwich structures: Past, present, and future, Sandwich Structures 7: Advancing with Sandwich Structures and Materials, 3-12.
6. [6]. Thomsen, O.T. (2009). Sandwich Materials for Wind Turbine Blades -- Present and Future, Journal of Sandwich Structures and Materials, 11(1):7-26.
7. [7]. Markets and markets. (2019). Honeycomb Core Materials Market, Honeycomb Core Materials Market by Type (Paper, Aluminum, Thermoplastic, Nomex), Application (Composites, Non-composites), End-use Industry (Aerospace & Defense, Packaging, Transportation, Construction & Infrastructure), Region - Global Forecast to 2022, https://www.marketsandmarkets.com/Market-Reports/honeycomb-core-material-market-116914763.html , Last access date: 01.11.2019.
8. [8]. Globalspec. (2019). Honeycombs and Honeycomb Materials Information, https://www.globalspec.com/learnmore/materials_chemicals_adhesives/composites_textiles_reinforcements/honeycombs_honeycomb_materials , Last access date: 05.11.2019.

9. [9]. Waybuilder. (2019). Advanced Composite Materials, https://www.waybuilder.net/free-ed/SkilledTrades/Aviation/AvAirframes/07AdvCompMat/07AdvCompMatFra.asp , Last access date: 05.11.2019.
10. [10]. Quan, Z., Wu, A., Keefe, M., Qin, X., Yu, J., Suhr, J., Byun, J.H., Kim, B.S., Chou, T.W. (2015). Additive manufacturing of multi-directional preforms for composites: oppurtunities and challenges, Materials Today, 18(9), 503-512.
11. [11]. Türk, D.A., Ebnöther A., Zogg, M., Meboldt, M. (2018). Additive Manufacturing of Structural Cores and Washout Tooling for Autoclave Curing of Hybrid Composite Structures. Journal of Manufacturing Science and Engineering, 140, 1-14.
12. [12]. Bitzer, T. N. (2012). Honeycomb technology: materials, design, manufacturing, applications and testing. Springer Science & Business Media.
13. [13]. Kaw AK. (2006). Mechanics of Composite Materials. 2nd ed. USA, Taylor and Francis.
14. [14]. Yalçın, B., Ergene, B. (2018). Farklı malzemelere sahip hibrid kompozitlerde çatlağın mekanik davranışlara etkisinin analizi. Pamukkale Univ Muh Bilim Derg, 24(4), 616-625.