Triply Periodic Minimal Surface (TPMS) lattice structures have been of increasing interest due to their
light weighting, enhanced mechanical properties, and energy absorption characteristics for automotive
and biomedical applications. With the advent of additive manufacturing and geometric modeling
software, TPMS lattices with complex geometries can be realized. In this work, TPMS lattice structures
were fabricated with PLA using fused filament fabrication (FFF) and their dynamic properties are
characterized through drop tower experiments. Although lightweight TPMS lattices are beneficial for
their impact absorption capability, most of the existing works are limited to quasi-static compression,
and dynamic impact tests are rarely performed. The current study investigates the stress-strain and
energy absorption characteristics of TPMS lattices through drop tower testing and numerical modeling.
Finite element modeling for TPMS lattices is carried out to validate the experimental responses. The
mechanical properties, deformation, and failure mechanisms of TPMS lattices under dynamic impact
are summarized for potential future applications.Mechanical Engineerin
