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Pawłowski P., Stańczak M.♦, Broniszewska-Wojdat P., Blanc L.♦, Frąś T.♦, Rusinek A.♦, Energy-absorption capacity of additively manufactured AlSi10Mg cellular structures subjected to a blast-induced dynamic compression–experimental and numerical study,
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING, ISSN: 0734-743X, DOI: 10.1016/j.ijimpeng.2024.105216, Vol.198, No.10, pp.105216-1-105216-17, 2025 Abstract: The study investigates the role of the topology of the additively manufactured AlSi10Mg cellular structures in the example of 3D and 2D designs: honeycomb, auxetic, lattice and foam. The samples were subjected to quasistatic and blast-induced dynamic compression. As a result, a relation between the structural geometry and the deformation mode of the compressed structures has been developed, demonstrating its influence on the energy absorption characteristics. The deformation and fracture mechanisms were examined in detail using the finite element simulations in the LS-DYNA code based on the material characterisation over a broad range of strain rates and temperatures. The outcomes show an agreement between the experimental data and the computations. The obtained results prove that by selecting the appropriate topological features, the deformation of compressed structures can be enhanced to improve their energy-absorption capacity. Keywords: Additive manufacturing,AlSi10Mg,Direct metal laser sintering (DMLS),Cellular structures,Dynamic compression,Blast-energy absorption,Explosively-driven shock tube Affiliations:
Pawłowski P. | - | IPPT PAN | Stańczak M. | - | French-German Research Institute of Saint-Louis (FR) | Broniszewska-Wojdat P. | - | IPPT PAN | Blanc L. | - | French-German Research Institute of Saint-Louis (FR) | Frąś T. | - | other affiliation | Rusinek A. | - | other affiliation |
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Stańczak M.♦, Frąś T.♦, Blanc L.♦, Pawłowski P., Rusinek A.♦, Blast-induced compression of a thin-walled aluminum honeycomb structure—experiment and modeling,
Metals, ISSN: 2075-4701, DOI: 10.3390/met9121350, Vol.9, No.12, pp.1350-1-24, 2019 Abstract: The presented discussion concerns the behavior of a thin-walled hexagonal aluminum honeycomb structure subjected to blast loading. The shock wave affecting the structure is generated by detonation of the C4 charge in an explosive-driven shock tube (EDST). The EDST set-up is an instrumented device that makes it possible to study blast effects in more stable and repeatable conditions than those obtained in a free-air detonation. The formation of folds characteristic of a honeycomb deformation in the axial compression distributes the initial loading over a time period, which is considered as an efficient method of energy dissipation. The test configuration is modeled in the Ls-Dyna explicit code, which enables analysis of the mechanisms of energy absorption that accompanies structural deformation under a blast loading. The conclusions reached in the performed experimental and numerical investigation can be applied to the modeling and optimization of cellular structures used to mitigate blast loadings. Keywords: thin-walled hexagonal aluminum honeycomb, dynamic compression, blast energy absorption, EDST, numerical simulation of blast effects Affiliations:
Stańczak M. | - | French-German Research Institute of Saint-Louis (FR) | Frąś T. | - | French-German Research Institute of Saint-Louis (FR) | Blanc L. | - | French-German Research Institute of Saint-Louis (FR) | Pawłowski P. | - | IPPT PAN | Rusinek A. | - | other affiliation |
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