Effect of Topology on Transient Dynamic and Shock Response of Polymeric Lattice Structures

Decoupling particle-impact dissipation mechanisms in 3D architected materials

“…In the moderate dynamics regime, spanning strain rates from 10 1 to 10 3 s −1 and enabled by Kolsky-bar or direct-impact setups, studies have identified additional deformation mechanisms via compaction fronts or tailored geometries, which ultimately lead to enhanced energy dissipation metrics ( 28 , 29 , 32 ). Recent studies on impact in architected materials have further investigated how compaction shocks in periodic-truss architectures ( 33 , 34 ), plate-based architectures ( 35 , 36 ), and triply periodic minimal surfaces ( 37 ) further enhance impact resistance. At strain rates spanning 10 3 to 10 5 s −1 , direct-impact experiments using powder and gas guns have explored shock hardening and coupled phenomena such as adiabatic heating under these extreme conditions ( 37 – 40 ).…”