Out-of-plane static crushing of thin-walled honeycomb structures. Numerical and experimental investigation

• Autorzy: Ciepielewski Radosław , Dybcio Paweł , Barnat Wiesław

Identyfikatory

DOI

10.12913/22998624/92176

• Języki publikacji: EN

Abstrakty

EN

Aim of presented study was to compare plateau stress in honeycomb structures under out-of-plane load calculated using Wierzbicki formula with numerical simulations validated using experimental trials. ALUBOND® Alucore honeycomb structure was examined. The results of theoretical, experimental and numerical investigation are reported. Two methods of modeling core behavior were evaluated using simulations. Full core geometry and simplified Y-shaped element were analyzed. Both approaches were compared with experimental out-of-plane compression tests. Aim of the study was to determine the influence of core geometrical parameters on obtained plateau stress value. Various foil thicknesses and cell sizes were studied numerically. The results showed, that initial and final deformation mode strongly depends on the geometry of the honeycomb structure. Force required to crush the core grew with increase of wall thickness, and decreased with increase of cell size. Calculations were performed using an implicit integration scheme implemented in the LS-DYNA software. Research showed the presence of plateau relationship between stress and geometric dimensions and structure response. Good agreement between results obtained by all methods was achieved. Basing on the results, conclusions concerning modeling honeycomb materials were drawn.

Słowa kluczowe

EN

honeycomb; thin-walled structure; static compression test; out-of-plane compression; FEM; LS-DYNA; Alucore

PL

plaster miodu o cienkich ściankach; test kompresji statycznej; kompresja pozasłoneczna; MES; LS-DYNA; Alucore

• Wydawca: Lublin University of Technology ; Polish Society of Ecological Engineering (PTIE), Branch of PTIE in Lublin
• Czasopismo: Advances in Science and Technology. Research Journal
• Rocznik: 2018
• Tom: Vol. 12, no 3
• Strony: 96--105
• Opis fizyczny: Bibliogr. 15 poz., fig., tab.

Twórcy

autor

Ciepielewski Radosław

• Faculty of Mechanical Engineering, Department of Mechanics and Applied Computer Science, Military University of Technology, Kaliskiego 2 st., 00-908 Warsaw, Poland

autor

Dybcio Paweł

• Faculty of Mechanical Engineering, Department of Mechanics and Applied Computer Science, Military University of Technology, Kaliskiego 2 st., 00-908 Warsaw, Poland

autor

Barnat Wiesław

• Faculty of Mechanical Engineering, Department of Mechanics and Applied Computer Science, Military University of Technology, Kaliskiego 2 st., 00-908 Warsaw, Poland

Bibliografia

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• 2. Ashab, A., Ruan, D., Lu, G., Xu, S., & Wen, C. Experimental investigation of the mechanical behavior of aluminum honeycombs under quasi-static and dynamic indentation, Materials & Design, 74, 138–149, 2015.
• 3. Deqiang, S., Weihong, Z., & Yanbin, W. Mean out-of-plane dynamic plateau stresses of hexagonal honeycomb cores under impact loadings, Composite Structures, 92(11), 2609–2621, 2010.
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• 8. Khoshravan, M. R., & Najafi Pour, M. Numerical and experimental analyses of the effect of different geometrical modelings on predicting compressive strength of honeycomb core, Thin-Walled Structures, 84, 423–431, 2014.
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• 11. MIL-STD-401B. Sandwich Constructions and Core Materials, General Test Methods, 1967.
• 12. Wang, Z., Liu, J., & Hui, D., Mechanical behaviors of inclined cell honeycomb structure subjected to compression, Composites Part B: Engineering, 110, 307–314, 2017.
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• 14. Wilbert, A., Jang, W.-Y., Kyriakides, S., & Floccari, J. F. Buckling and progressive crushing of laterally loaded honeycomb, International Journal of Solids and Structures, 48(5), 803–816, 2011.
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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).