TY  - JOUR
AU  - Deng, Yunxiang
AU  - Zhao, Yu
AU  - Wan, Boyang
AU  - Chang, Li
PY  - 2026
TI  - Effects of re-entrant auxetic structure on friction-induced vibrational behaviour of 3D printed PLA in sliding wear process
JO  - Friction
SN  - 2223-7690
SP  - 9441172
VL  - 14
IS  - 4
AB  - The present research investigates the effects of re-entrant auxetic structure’s on friction-induced vibrational behaviour of three-dimensional (3D) printed polylactic acid (PLA) samples. A series of re-entrant auxetic specimens with different re-entrant angles were prepared for sliding wear tests. The results showed that with the increase in re-entrant angles, the negative Poisson ratio becomes greater. Accordingly, the specimen showed less vibration during the sliding wear process, with a lower average friction coefficient. As a result, the wear resistance of the specimens with embedded re-entrant structures was clearly improved. Microscopic images revealed that surface fatigue wear was effectively prevented with the re-entrant structures, thanks to their energy absorption and vibration insulation capacities. The findings demonstrated that 3D printing technology could provide a new route for the design and fabrication of high wear resistant engineering components by creating complex functional structures to control and optimize their dynamic behaviour and, thus tribological performance.
UR  - https://doi.org/10.26599/FRICT.2025.9441172
DO  - 10.26599/FRICT.2025.9441172