کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7001465 1454780 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Numerical analysis of transverse reciprocating velocity effects in EHL point contacts
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Numerical analysis of transverse reciprocating velocity effects in EHL point contacts
چکیده انگلیسی
Experimental results by Fryza et al. [1] on the effect of transverse harmonic vibrations over the film thickness in EHL point contacts are directly compared here with numerical simulations assuming isothermal conditions and either Newtonian or Non-Newtonian fluid rheology. The simulations agree well with the experiments at the highest reciprocating speed frequency applied. It is then apparent from the comparison that with the oils and contact conditions analyzed, phenomena such as shear and thermal thinning, starvation and rig inertia have a minimal impact if not entirely absent. The simulated time-dependent film thickness fluctuations also show that, whereas the mean central film thickness decreases as reported by Fryza et al., both the global minimum and average film values increase as a result of adding a transverse reciprocating speed. Possible explanations for the obtained results are provided, highlighting the need for a broader analysis to better understand this type of problems.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tribology International - Volume 126, October 2018, Pages 1-8
نویسندگان
,