Mechanical properties of hybrid structures generated by additively manufactured triply periodic minimal surface structures and foam

Abstract

Triply periodic minimal surface (TPMS) structures are adequate substitutes for some foams because of the high ratio of their mechanical properties and weights; furthermore, they allow the possibility of tailoring final structures. The internal space of TPMSs can be filled with low-density foam to enhance the mechanical properties and energy absorption capabilities of these structures. This study focused on the comparative analysis of non-hybrid and hybrid TPMSs. The specimens were tested under compression quasi-static loads, and their mechanical properties, capability to absorb energy per unit weight and per unit volume, ideality, efficiency, total efficiency, weight, and failure mechanisms were analyzed.

Keywords:

• Hybrid structure
• triply periodic minimal surface structures
• additive manufacturing
• energy absorption
• compression loads

Acknowledgements

The authors would like to thank n-Topology company that provided the software that was essential to prepare all the CAD models.

Additional information

Funding

This work was supported by Fundación Bancaria Ibercaja.