Experimental Characterisation of 3D Printed Cellular Structures
Sprache des Vortragstitels:
Englisch
Original Tagungtitel:
37th Danubia-Adria Symposium on Advances in Experimental Mechanics
Sprache des Tagungstitel:
Englisch
Original Kurzfassung:
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
Forschungs-