From bionic way, results of abrasion experiment on three kinds of intertidal zone shells were contrasted. Anti-erosion mechanism of shell's non-smooth surface was analyzed for bionic exploitation of improving abrasive resistance of claws. By using SEM (scanning electron microscope), surface morphology of three kinds of shells (Dongfang shell, Bloody clam and Ark shell) were measured and the simplified model was set up through Solidworks. Then, different anti-erosion characteristics of these three shells samples were obtained through the erosion tests. While under the condition of particles size was 0.35-1.0mm and movement velocity was l.5m·s-1, the Bloody clam had the best anti-erosion effect with the weight loss rate of 2.11% lower than Dongfang shell and Ark shell. Finally, mechanism of anti-erosion of the Bloody clam was that it's surface groove structure had decreased the normal force which could cause micro-indentation. Moreover, the surface non-smooth microstructure prolonged the interplay course, which could lead to the decline of both velocity and energy. The perfect anti-erosion effect was obtained.%从仿生学角度,对比3种典型潮间带贝类冲蚀磨损试验结果,分析贝壳表面非光滑结构的冲蚀磨损机理,为提高秧爪耐磨性探索结构仿生学设计.利用扫描电子显微镜(SEM)分别对东方扇贝(Dongfang shell)、魁蚶(Bloody clam)、毛蚶(Ark shell)壳表进行形貌分析,确立其结构特征参数,利用Solidworks建立表面冲蚀过程简化模型;通过冲蚀磨损试验,获得3种贝类样品的不同耐磨性能,在冲蚀粒径为0.35～1.0mm,冲蚀速度为1.5m·s-1条件下,魁蚶的失重比最小,仅为2.11％,低于东方扇贝和毛蚶.魁蚶表面的凹槽结构可减小冲蚀法向力,从而减小冲蚀微压痕.另外,表面微结构延长了冲蚀作用时间,可降低冲蚀速度和能量,起到耐冲蚀作用.
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