Abstract
This paper presents the results of the experimental research of 3D structures developed with an SLA additive technique using Durable Resin V2. The aim of this paper is to evaluate and compare the compression curves, deformation process and energy-absorption parameters of the topologies with different characteristics. The structures were subjected to a quasi-static axial compression test. Five different topologies of lattice structures were studied and compared. In the initial stage of the research, the geometric accuracy of the printed structures was analysed through measurement of the diameter of the beam elements at several selected locations. Compression curves and the stress history at the minimum cross-section of each topology were determined. Energy absorption parameters, including absorbed energy (AE) and specific absorbed energy (SAE), were calculated from the compression curves. Based on the analysis of the photographic material, the failure mode was analysed, and the efficiency of the topologies was compared.
Highlights
Intensive developments in modern industry results in search for more and more unconventional technological solutions
The structures were subjected to a quasi-static axial compression test
Their basic material and energyabsorbing properties were determined from the compression curves recorded during the tests
Summary
Intensive developments in modern industry results in search for more and more unconventional technological solutions. Numerous review papers on lattice structures and their applications [1,2,3,4,5,6], illustrating the enormous potential of these materials have been published; the technological development of additive methods only improves the results. These lattice structures can be divided into regular and irregular based on their cellular nature [7]. Regular structures are distinguished by their typical orthotropic mechanical properties, low density while maintaining high strength properties, high levels of energy absorption and a high stiffness-to-weight ratio [8,9]
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