Journal
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
Volume 235, Issue 10, Pages 1828-1839Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/0954406219853857
Keywords
Lattice structures; elastoplastic behavior; strain energy; selective laser melting; AlSi10Mg; finite element modeling
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The design of lattice structures for additive manufacturing processes requires specialized methods and tools to reduce computational complexity and accurately predict global strength, strain energy dissipation, and stress distribution. Lattice structures are used as impact absorbers in aircraft anti-icing systems to efficiently dissipate kinetic energy, with numerical simulations and experimental characterizations analyzing different variants in the elastoplastic regime to correlate material density, structural strength, and strain energy dissipation to cell shapes and dimensions.
The design of lattice structures for additive manufacturing processes requires dedicated methods and tools able to reduce the computational heaviness of simulation and to predict accurately the global strength and strain energy dissipation and the stress distribution. Additionally, geometrical-related stress intensifications lead to local yielding regions and related plastic hinges which contribute to the deformation mechanisms. The use of cellular materials in heavy loaded structures has important role in lightered and hybrid components for aircrafts. In this paper, lattice structures are used as impact absorbers in aircrafts anti-icing systems to efficiently dissipate the kinetic energy. Some variants of lattice structures are analyzed by numerical simulations and experimental characterizations in the elastoplastic regime with the goal to correlate the equivalent material density, the structural strength, and the strain energy dissipation to cells shapes and dimensions.
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