Lubrification and Lubrificants

Recommended Prerequisites

Not applicable.

Teaching Methods

Not applicable.

 

Learning Outcomes

On successful completion of the module the student will have a comprehensive understanding of lubrication theory, lubricants, greases and ElastoHydrodynamic Lubrication. The student will then be able to apply this to study real, industrial, engineering systems where lubrication is critical to the system’s performance.

At the end of the course the students will be able to:

• Apply lubrication theory to a range of relevant problems (including how complex lubricant rheology such as non-Newtonian, pressure dependent and temperature dependent lubricants perform). The analyses include the derivation and application of Reynolds’ equation and the sort bearing approximation.

• Understand how different lubricants perform in real engineering environments (such as temperature dependence, degradation).

• Understand the fundamental aspects of grease lubrication Apply ElastoHydrodynamic Lubrication theory to analyse bearing performance and recall the standard bearing design rules.

Work Placement(s)

No

Syllabus

The course syllabus will be as follows,

• Introduction to lubricant characteristic and definition of terms

• Underlying assumption and derivation of the Reynolds' equation for different boundary condition and fluid characteristics

• Analysis of inclined surface thrust bearing

• Short cylinder (bearing) theory

• Grease lubrication• Elastohydrodynamic Lubrication.

Assessment Methods

Assessment
Exam paper includes problems from different lubrication aspects, such film thickness, pressure distribution etc.: 100.0%

Bibliography

Fundamentals of fluid film lubrication by Hamrock, Schmid and Jacobson.

Handbook of Tribology by Bhushan.

Lecture notes.