Elastohydrodynamics (FSI-9EHD)

Academic year 2020/2021
Supervisor: prof. Ing. Martin Hartl, Ph.D.  
Supervising institute: ÚK all courses guaranted by this institute
Teaching language: Czech
Aims of the course unit:
The aim of the course is to introduce students to theoretical fundamentals of elastohydrodynamic lubrication regime.
Learning outcomes and competences:
After completing the course the student manages the theoretical solution of essential problems associated with the EHD lubrication regime.
Prerequisites:
General courses on mechanics, machine design, material sciences and hydromechanics.
Course contents:
The overall aim of this course is to provide students with a general and useful introduction to the main concepts and principles of elastohydrodynamic (EHD) lubrication. It is the mechanism of lubrication that describes the separation by a lubricant film between two elastic non conforming machine elements loaded against each other, and in relative motion. The course covers introduction to EHD lubrication, the fundamentals required in understanding EHD lubrication and in-depth study of selected topics related to EHD lubrication.
Teaching methods and criteria:
Lectures, seminars, self-study.
Assesment methods and criteria linked to learning outcomes:
The evaluation of students is based on the solution of four tasks in the field of contact problems, elastohydrodynamic lubrication, fluid film friction and wear.
Controlled participation in lessons:
Teaching has a form of consultation and discussion on a given theme at arranged times.
Type of course unit:
    Lecture  10 × 2 hrs. compulsory                  
Course curriculum:
    Lecture 1. Material Properties. Lubricant Rheology.
2. Elastostatic Contacts.
3. Governing Equations of EHD Lubrication.
4. Simple Concepts of Non-conforming Contact Lubrication.
5. Numerical Methods for EHD Lubrication Problem Solution.
6. Friction and Non-linear Lubricant Behavior in EHD Contacts.
7. Stress and Fatigue in EHD Contacts.
8. Micro-EHD lubrication and mixed EHD lubrication.
9. Transient EHD lubrication.
10. Temperature and Abnormal Phenomena.
Literature - fundamental:
1. Stachowiak, G. W., A. W. Batchelor. Engineering Tribology. 4th edition. Boston: Butterworth-Heinemann, 2014. [cit. 2019-08-30] ISBN 0123970474. [Online] Dostupná z: https://app.knovel.com/hotlink/toc/id:kpETE00005/engineering-tribology/engineering-tribology
3. Gohar, R., H. Rahnejat. Fundamentals of Tribology. 1st edition. London: Imperial College Press, 2008. ISBN: 1-84816-184-0.
4. Gohar, R. Elastohydrodynamics. 2nd edition. London: Imperial College Press, 2001. ISBN 1-86094-170-2.
Literature - recommended:
1. Dowson, D. History of Tribology. 1st edition. London: Professional Engineering Publishing, 1998. ISBN 1-86058-070-X.
2. Hamrock, B. J. Fundamentals of Fluid Film Lubrication. 1st edition. New York: McGraw-Hill Inc., 1994. ISBN 0-07-025956-9.
The study programmes with the given course:
Programme Study form Branch Spec. Final classification   Course-unit credits     Obligation     Level     Year     Semester  
D-KPI-P full-time study --- no specialisation -- DrEx 0 Recommended course 3 1 W