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Skeleton castings dynamic load resistance

Cholewa M., Szajnar J., Szuter T.

Journal of Achievements in Materials and Manufacturing Engineering

2013

Vol. 58, nr 2

94--98

Purpose: The article is to show selected results of research in a field of new type of cast spatial composite reinforcements. This article shows skeleton casting case as a particular approach to continuous, spatial composite reinforcement. Design/methodology/approach: The research is concerning properties of cast spatial microlattice structures called skeleton castings. In this paper results of impact test of skeleton casting with octahedron elementary cell were shown. The selection of internal topology of skeleton casting was based on numerical simulations of stress distribution. Findings: The possibility of manufacturing of geometrically complex skeleton castings without use of advanced techniques was confirmed. Research limitations/implications: With use of computer tomography, analysis of deformation mechanisms was carried out. Different levels of impact energies were used. Practical implications: Spatial skeleton casting with octahedron elementary cell confirmed their usefulness as impact energy absorbers. Originality/value: The overall aim of presented research was to determine the mechanisms of skeleton castings deformation processes. Thanks to CT data next step will be to create accurate numerical model for further simulation and design optimization.