Numerical and experimental study on mechanical behaviour of the AlSi10Mg aluminium structures manufactured additively and subjected to a blast wave
Department of Protection Technologies, Security & Situational Awareness, French-German Research Institute of Saint-Louis (ISL), 68301 Saint-Louis, France
2 Institute of Fundamental Technological Research Polish Academy of Sciences, Polish Academy of Sciences (PAS) 02-106 Warsaw, Poland
3 Laboratory of Microstructure Studies and Mechanics of Materials, LEM3 Laboratory, Lorraine University, 57070 Metz, France
Published online: 9 September 2021
The paper is related to energy absorptive properties of additively manufactured metallic cellular structures. The samples of Honeycomb, Auxetic, rhomboidal Lattice and a regular Foam are subjected to a dynamic compression due to the blast tests. The cuboidal samples are manufactured by the Direct Metal Laser Sintering (DMLS) method using AlSi10Mg aluminium powder. The experimental tests are performed by means of an Explosive Driven Shock Tube (EDST). The measured results of the transmitted forces in relation to the shortening of the samples allow to analyse the deformation processes of each selected geometry. In addition, the evaluation of the structural responses leads to identification of the structure properties, such as the equivalent stress over equivalent strain or the energy absorption per a unit of mass. Moreover, the process of compression is modelled numerically using the explicit code LS-DYNA R9.0.1. The obtained simulations provide the complete analysis of the experimentally observed mechanisms.
© The Authors, published by EDP Sciences, 2021
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