目的 研究 Cu 基粉末冶金摩擦材料的微接触力学特性,对该材料的表面形貌进行精确采集和合理表征。 方法 通过镭射形貌仪采集表面形貌,利用 MATLAB 对形貌点阵进行插值重构,在 ANSYS 中获得接触分析的图像,采用图像阀值分析和二值化处理。 结果 分析得到了 Cu 基粉末冶金材料接触过程的真实接触面积与轮廓接触面积范围,验证了不同接触区域的接触机理。 结论 证明了摩擦副接触过程存在复杂的弹塑性接触区域,不同机理所控制的接触区域所占的比例从 6% ~ 27% 不等。

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