Experimental Characterisation of 3D Printed Cellular Structures

Description

Lattice structures, a type of ordered cellular structure, offer high design flexibility and are of major interest for lightweight design, sporting goods or medical applications. They generally have better structural performance per weight than parts made of bulk material. With conventional manufacturing techniques they are difficult to produce, but with additive manufacturing (AM) fabrication is feasible. To better understand their behaviour under various loading conditions several lattice structures with different volume fractions were investigated. The specimens were manufactured using selective laser sintering (SLS). The materials used were thermoplastic polyurethane (TPU) and polyamide (PA 12). Conclusion: - Test method is promising for a basic characterisation of cellular structures - Higher buckling force for higher volume fraction - Stretch dominated behaviour more pronounced in structures made from PA 12 - Anisotropic behaviour more prevalent in structure b than in structure a - Anisotropic behaviour is interesting for specific applications, e.g. shoe soles

Period	22 Sept 2021
Event title	37th Danubia-Adria Symposium on Advances in Experimental Mechanics
Event type	Conference
Location	AustriaShow on map