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材料工程  2014 

接触应力对车轴钢旋转弯曲微动疲劳寿命的影响

DOI: 10.3969/j.issn.1001-4381.2014.02.007, PP. 34-38

Keywords: 微动疲劳,旋转弯曲,车轴,接触应力,过盈配合

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Abstract:

研究LZ50车轴钢不同过盈配合接触应力水平对旋转弯曲微动疲劳寿命的影响。分别利用光学显微镜、扫描电子显微镜对过盈配合表面的微动损伤表面和断口进行分析。结果表明,随着过盈量的增加,LZ50车轴钢旋转弯曲微动疲劳寿命呈现先降低而后升高的非线性特征,这是多轴复杂应力、配合面的接触应力、微动摩擦应力以及微动磨损交互作用的结果。

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