Simulation analysis and experimental study on the friction characteristics of hexagonal texture on the surface of PA66 material

Starting from reducing the vibration and noise of automotive timing belt transmission systems, explore whether texture can improve the friction characteristics between non-metallic friction pairs, a hexagonal texture was designed and processed on a PA66 nylon plate to form a friction pair with chloroprene rubber material for reciprocating friction tests. By combining numerical analysis and experimental research, it is proven that hexagonal texture can improve the stress distribution and concentration strength of the friction interface between PA66 and chloroprene rubber materials during the friction process; inhibit continuous vibration of the interface, thereby reducing vibration acceleration amplitude and noise level. In addition, when the texture spacing is moderate, with the increase of texture width, the vibration reduction and noise reduction effects are more prominent, but the individual effect of texture depth is not significant. This is of certain significance for reducing the vibration and noise of synchronous belt transmission systems.