The Experimental Study on Structured Topological Fish Scale Surface by Micro-Abrasive Jet Machining
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摘要: 由于结构化鱼鳞表面的随行波结构有较好的减阻效果,开展在硬脆材料上制备结构化鱼鳞表面有重要的意义。为了在脆性难加工材料上制备结构化鱼鳞表面,首先提取了鱼鳞表面的拓扑特征,建立了鱼鳞单元的表面模型,并基于鱼鳞模型进行搭接,得到结构化鱼鳞表面;然后根据微磨料气射流加工原理,分析了气射流加工拓扑鱼鳞实验可行性与影响结构化鱼鳞表面形貌的重要工艺参数;最后,采用单因素实验法对重要加工参数进行实验分析,得到了较好的拓扑鱼鳞表面单元,并以此进行排布得到结构化表面。研究结果表明,使用微磨料气射流加工方法,可在硬脆材料上加工结构化拓扑鱼鳞表面,不同的工艺参数将改变加工出的表面形貌但鱼鳞表面的拓扑属性保持不变。
关键词 微磨料射流加工;鱼鳞表面;拓扑特征;表面形貌
中图分类号 TG664Abstract: Due to the good drag reduction effect of the traveling wave structure on the surface of structured fish scales, it is of great significance to prepare structured fish scale surfaces on hard and brittle materials. In order to prepare structured fish scale surfaces on brittle and difficult-to-process materials, the topological features of fish scale surfaces are first extracted, and a surface model of fish scale units is established. The fish scale model is then used to construct the structured fish scale surface. Next, based on the principle of micro-abrasive air jet processing, the feasibility of air jet processing for topological fish scale experiments and the important process parameters affecting the morphology of the structured fish scale surface are analyzed. Finally, using the single-factor experimental method, the important processing parameters are experimentally analyzed to obtain a better topological fish scale surface unit, and the structured surface is arranged accordingly. The research results show that using micro-abrasive air jet processing, it is possible to process structured topological fish scale surfaces on hard and brittle materials. Different process parameters will change the surface morphology of the processed material, but the topological properties of the fish scale surface remain unchanged.
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