Parametric study of geometry effect on response to applied loadings of metallic honeycomb structures by virtual testing of mesoscale models
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Pietras_Sadowski_AMM__accepted.pdf (3.66 MB)
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2018-02
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Polish Academy of Sciences, Committee of Metallurgy, Institute of Metallurgy and Materials Science
Abstract
In this paper were conducted virtual tests to assess the impact of geometry changes on the response of metallic hexagonal honeycomb structures to applied loadings. The lateral compressive stress state was taken into consideration. The material properties used to build numerical models were assessed in laboratory tests of aluminum alloy 7075. The modeling at the mesoscale level allow to a comprehensive study of honeycomb internal structure. The changes of honeycomb geometry elements such as fillets radius of the cell edges in the vicinity of hexagonal vertexes, wall thickness were considered. The computations were conducted by using the finite element method with the application of the ABAQUS finite element method environment. Elaborated numerical models allowed to demonstrate the sensitivity of honeycomb structures damage process response to geometry element changes. They are the proper tools to perform the optimization of the honeycomb structures. They will be also helpful in designing the process of modern construction build-up of the considered composite constituents in various branches of industry. Moreover, the obtained results can be used as a guide for engineers. Conducted virtual tests lead to the conclusion that simplification of the models of internal honeycomb structure which has become commonplace among both engineers and scientists can lead to inaccurate results.
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Pietras, D., Sadowski, T. (2018) Parametric Study of Geometry Effect on Response to Applied Loadings of Metallic Honeycomb Structures by Virtual Testing of Mesoscale Models. Archives of Metallurgy and Materials Vol. 63, iss. 2 pp. 953-961