基于中心复合设计的热喷涂层接触疲劳寿命预测研究

发布时间：2018-03-04 00:16

本文选题：复合材料　切入点：再制造　出处：《兵工学报》2017年03期 　论文类型：期刊论文

【摘要】：采用中心复合设计方法,研究服役条件对超音速等离子喷AT40涂层接触疲劳寿命的影响。基于回归分析原理,利用响应曲面方法建立了综合考虑转速、接触应力和滑差率的多因素寿命预测模型,并分析了转速、接触应力和滑差率对接触疲劳寿命的综合作用。研究结果表明:不同服役条件下AT40涂层的接触疲劳寿命具有相同的寿命分布;滑差率是影响接触疲劳寿命的主要因素,接触应力是次要因素,而转速的影响不显著;接触应力和滑差率的交互作用、转速和滑差率的交互作用均对接触疲劳寿命有显著影响。模型的显著性检验结果表明,所拟合的响应曲面回归模型具有较高的显著性,可用于表征转速、接触应力和滑差率与AT40涂层滚动接触疲劳寿命的关系。
[Abstract]:The effect of service conditions on the contact fatigue life of supersonic plasma spray AT40 coating was studied by using the central composite design method. Based on the principle of regression analysis, the response surface method was used to establish a comprehensive consideration of rotational speed. The multi-factor life prediction model of contact stress and slip rate is presented, and the rotational speed is analyzed. The comprehensive effect of contact stress and slip ratio on contact fatigue life. The results show that the contact fatigue life of AT40 coating has the same life distribution under different service conditions, and the slip ratio is the main factor affecting contact fatigue life. Contact stress is a secondary factor, but the effect of rotational speed is not significant, the interaction of contact stress and slip rate, the interaction of speed and slip rate have significant influence on contact fatigue life. The fitted response surface regression model has high significance and can be used to characterize the relationship between the rotational speed, contact stress and slip rate and the rolling contact fatigue life of AT40 coating.
【作者单位】：装甲兵工程学院装备再制造技术国防科技重点实验室;
【基金】：国家自然科学基金重点项目(51535011)
【分类号】：TG174.442

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