弹流润滑条件下表面形貌对摩擦噪声的影响

发布时间：2018-01-04 07:12

本文关键词：弹流润滑条件下表面形貌对摩擦噪声的影响　出处：《应用数学和力学》2017年07期 　论文类型：期刊论文

【摘要】：研究了弹流润滑状态下表面形貌对摩擦噪声的影响.通过激光微加工方法在金属圆盘试件表面上制造了两种沟槽型织构表面形貌,在双盘摩擦磨损试验机上对不同表面形貌进行了摩擦噪声和摩擦特性试验,分析了线接触弹流润滑条件下不同工况和表面形貌影响摩擦噪声的机理,并结合有限元分析对结论加以验证.结果表明:载荷和转速的变化对线接触摩擦噪声有明显影响,由于线接触副工作在部分膜弹流润滑状态下,所以摩擦噪声的特性与干摩擦时类似,摩擦因数较大的表面会辐射出更强的摩擦噪声;特定结构的表面形貌能改善表面润滑特性,有效降低摩擦噪声声压级,沟槽型织构的存在可以打断接触区域应力分布,减轻接触面微凸体碰撞作用,从而降低了表面自激振动,同时合适的表面形貌结构也有利于润滑油膜的形成,减小了系统的摩擦能量,达到降低摩擦噪声的效果.
[Abstract]:Study on the effect of surface topography in elastohydrodynamic lubrication on the friction noise. Through the laser micromachining method on the surface of specimen made two groove type texture surface morphology on the metal disk, the double disk friction and wear testing machine on different surface morphology of friction noise and friction properties, analyzes the mechanism of friction noise different conditions and surface morphology of line contact elastohydrodynamic lubrication conditions, combined with the finite element analysis of the conclusion was verified. The results showed that the change of load and speed have obvious influence on line contact friction noise, due to line contact in partial EHL condition, so the friction noise characteristics similar to those of dry friction, friction the large surface factor will radiate more friction noise; specific surface morphology structure can improve the surface lubrication, reduce friction and noise level, groove type The presence of texture can interrupt the contact area of the stress distribution, reduce the convex contact surface collision, thereby reducing the surface vibration, and the surface morphology of the appropriate structure also contributes to the formation of the lubricating film, reducing friction energy system, to reduce the friction and noise effect.

【作者单位】：合肥工业大学机械工程学院;
【基金】：国家自然科学基金(51375132) 安徽省科技攻关项目(1501021026)~~
【分类号】：TH117.1
【正文快照】： 引言造了两种不同形貌参数的沟槽型织构,基于双盘摩擦磨损试验机进行了弹流润滑条件下的线接触摩擦噪声研究,分析了线接触摩擦噪声的产生规律及影响因素,并通过理论分析探索表面形貌控制摩擦噪声的机理,研究结果将为线接触表面低噪声设计提供基础.1试验方法1.1表面形貌制造参

【相似文献】