Generation and modeling of the mechanical behavior in compression of stochastic foams
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Date
2024
Authors
KHENNAB Abdelghani
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Abstract
The deformation characteristics and mechanical behaviour of 3D-printed stochastic open-cell
foam structures were experimentally studied under a quasi-static compression test. PLA foam specimens
with irregular cell geometry, variable strut sections and prescribed relative density are constructed
numerically using the Voronoi diagrams and prepared with fused deposition modelling. The design
procedure allows controlling the strut topology easily, which makes the geometrical model suitable for
studying the effect of local morphological characteristics on the mechanical performance of open-cell
foam material. The effect of different morphological characteristics on the compressive mechanical
behaviour of the fabricated PLA foam was examined in detail. Compression experiments prove that the
mechanical properties significantly dependent on the relative density and strut section shape. The main
mechanical properties of the 3D-printed PLA foams for different cross-sectional shapes of struts were
obtained via the energy-efficient method and expressed with the two common formulas existing in the
literature.