@article{Deng2026, 
author = {Yunxiang Deng and Yu Zhao and Boyang Wan and Li Chang},
title = {Effects of re-entrant auxetic structure on friction-induced vibrational behaviour of 3D printed PLA in sliding wear process},
year = {2026},
journal = {Friction},
volume = {14},
number = {4},
pages = {9441172},
keywords = {wear resistance, coefficient of friction, additive manufacturing, friction-induced vibration, re-entrant auxetic structure},
url = {https://www.sciopen.com/article/10.26599/FRICT.2025.9441172},
doi = {10.26599/FRICT.2025.9441172},
abstract = {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.}
}