High strain rate testing of hybrid TPMS structures

This study provides an overview of the most recent advancements in the production of triple periodic minimal (TPMS) structure combinations of periodic surfaces and strut structures using an acrylonitrile butadiene styrene material and studies of their structural mechanics and energy absorption properties at high strain rates using split Hopkinson pressure bars. The simulation and experimental structural study of the Schwartz diamond (periodic surface) and Hybrid Schwartz diamond (HSD-periodic surface + strut) TPMS foam structures under quasistatic and dynamic loading conditions, as well as the behavior of the structures in terms of energy absorption and plateau stress from low to high strain rates, were performed. This study provides techniques for predicting the mechanical properties of combinations of periodic surface and strut structure-based TPMS structures made by FDM, as well as a better understanding of the possibilities and limitations of these structures. At low to high strain rates, each of the two structural crashworthiness features of the TPMS design were successfully recognized, analyzed, and documented.