How do I model a lubricated contact in a simulation setting?

What is the correct combination of numerical methods for different regimes of lubrication?

How do I consider realistic system level data as well as experimental inputs to achieve practical results?

Learn how to realistically and practically simulate lubricated contacts with this e-learning course from NAFEMS.

Simulation of Lubricated Contacts

Low Load Hydrodynamic and High Load Elasto-Hydrodynamic Modelling From Contact to System Levels

This course is designed to develop skills and knowledge in simulating lubricated contacts using numerical methods. Lubricated contacts form a lubricant film which completely or partially separates contacting surfaces.

This film of lubricant generates viscous friction, usually the largest contributor to the frictional losses. The pressure generated in the film is also different from dry contacts. Hence, this simulation affects any durability and surface fatigue analysis. The dissipated energy generates heat, leading to thermal behaviour of the contact which will also be discussed in this course.

Finally, as any numerical method, the computational tribology requires system considerations as well as experimental inputs to deliver realistic data. These two aspects will be covered appropriately in this course to ensure practicality of the developed knowledge.

By the end of this course, you will have developed a unique capability in simulating and predicting lubricated contacts.

Who should attend?

Engineers dealing with systems which contain lubricated contacts, such as those with gears, bearings, seals, guideways and sliders.

Engineers who design above systems for desired durability, friction and dynamic refinement

What will you learn?

Ascertaining regimes of lubrication for a simulation case
Calculating, pressure distribution, film thickness distribution, temperature distribution and friction in lubricated contacts.
System level considerations, including how a lubricated contact behaves under dynamic loading and within a structure.
Making a connection between the simulation and experiment on the same system.
Taking into account oil availability in the system (starvation).

Why an e-learning class?

Travel and training budgets are always tight! The e-Learning course has been developed to help you meet your training needs.

If your company has a group of engineers, or specific training requirements across any subjects, please contact us to discuss options.

Course Program

This is a four-week live web-based eLearning course with a total of 10 hours of tuition (presented as a two-hour session per week). Delegates will be provided with copies of all lecture slides including many self-test problems (with worked solutions).

Session 1

Introduction to lubricated contact and different regimes of lubrication (1 Hr)

System of numerical codes required for each regime of lubrication (1.5 Hr)

Session 2

Simulating fluid film under hydrodynamic regime (low to moderate loads) (1.5 Hr)

Simulating thermal effects (1 Hr)

Session 3

Simulating fluid film under elasto-hydrodynamic regime (high loads) (1.5 Hr)

Fluid film simulation at system level and structural effects (1 Hr)

Session 4

Modelling oil availability and starvation at system level (bulk oil modelling) (1 Hr)

Obtaining practical data from experiment for lubricated contact modelling (1.5 Hr)

Feedback from former e-Learning students:

"Super! Doesn't get better than this. Good idea to start having e-Learning courses."
R.P.
"I'm really happy not to pay a big fraction of my annual training budget to airlines and hotels. A BIG plus to e-learning."
V.G.

PSE

PSE Competencies addressed by this training course

FEAkn1	List the various steps in the analysis/simulation process.
FEAkn5	State the variational principle involved in the formulation of the Displacement Finite Element Method and identify the solution quantity assumed within each element.
FEAkn8	List the requirements for an axisymmetric analysis to be valid.
FEAkn15	List 2 common solvers for large sets of simultaneous equations.
FEAco3	Explain the term solution residual.
FEAco4	Explain the meaning of convergence, including h and p types.
FEAco35	Discuss the terms Validation and Verification and highlight their importance.
FEAco40	Explain the rationale behind the use of 1-D, 2-D and 3-D elements used in the analysis of components within your organisation.
FEAap2	Demonstrate effective use of available results presentation facilities.
FEAap12	Employ a range of post-solution checks to determine the integrity of FEA results.
FEAsy7	Demonstrate effective use of available results presentation facilities.
CFDkn1	State the general transport equation for a general flow variable.
CFDkn2	State the Navier-Stokes equations.
CFDkn3	State the Reynolds Averaged Navier Stokes equations.
CFDkn4	List typical boundary conditions for incompressible and compressible flow boundaries.
CFDkn7	List the main sources of error and uncertainty that may occur in a CFD calculation.
CFDco2	Compare and contrast the finite difference , finite volume and finite element discretisation methods.
CFDco3	Explain the term continuum and state the limits of applicability of continuum assumptions.
CFDco7	Explain the conflict between accuracy and computational efficiency when specifying outlet flow boundary conditions.
CFDco1	Explain the terms elliptic, parabolic and hyperbolic and the implications for solutions methods in the context of fluid flow.
CFDap1	Demonstrate the ability to examine a range of flow phenomenon and employ appropriate fluid modelling approaches.
CFDap2	Demonstrate the ability to apply discretisation techniques for diffusion, convection and source terms of the general transport equation using the Finite Volume and/or Finite Element techniques.
CFDap4	Demonstrate the ability to select appropriate numerical grids for incompressible and compressible flow problems in complex geometries.
CFDap7	Use best practice CFD methods to solve steady state internal compressible flows involving supersonic conditions.
CFDsy2	Construct a strategy for the assessment of fluid flow design concepts using CFD methods.
CFDev2	Appraise the use of a range of different CFD codes for flow simulation problems.
MBDYkn1	State Newton's 2nd law of motion
MBDYkn2	State Newton's 3rd law of motion
MBDYkn9	List the joint types commonly available in Multi-Body Dynamic Analysis Systems
MBDYkn10	State the number of DOFs of a multi-body system in terms of the number of rigid bodies and the joints connecting them
MBDYkn12	List the initial conditions that need to be solved for in order to commence a multi-body dynamic analysis
MBDYkn13	Briefly review the various solver technologies available for Multi-Body Dynamic Analysis
MBDYkn14	List various commercially available Multi-Body Dynamic Analysis Systems
MBDYkn15	Describe other kinds of CAE software may interface with a Multi-Body Dynamic Analysis System
MBDYkn16	List various industrial applications of Multi-Body Dynamic Analysis
MBDYco5	Describe 3 commonly used joints and the number of DOFs constrained in each case
MBDYco9	Explain the difference between holonomic and non-holonomic constraints
MBDYco10	Describe how the model elements (joints, springs, forces etc.) in a Multi-Body Analysis system correctly apply action and reaction forces according to Newton's 3rd law
MBDYco15	Describe the uses of an eigenvalue analysis of a multi-body system
MBDYco16	Outline briefly the use of FEA substructures to model flexible bodies in a multi-body analysis, and the assumptions and limitations
MBDYco17	Describe the Component Mode Synthesis method for modelling flexible bodies
MBDYsy1	Formulate simple benchmark analyses in support of multi-body studies
MBDYsy3	Use industry-specific modules and/or customise with in-house software development for specialist applications
MBDYev1	Assess the role of Multi-Body Dynamic Analysis in existing and proposed design procedures and projects, and plan effective strategies
DVkn1	State Newton's 2nd Law or, equivalently, the d'Alembert Force Method.
DVco1	Explain the terms Kinematics and Kinetics.
DVco15	Explain different physical forms of Dynamic Loading (Excitation) in a Force Response analysis.
DVco16	Explain Harmonic, Periodic, Transient, and Random time response.
DVco20	Discuss the term Natural Frequency in relation to a continuum and a discretized system.
DVco26	Describe the difference between Viscous, Dry-Friction (Coulomb), and Hysteretic Damping.
DVco40	Explain methods to compare Experimental with Analytical Modal Analysis data (e.g., MAC, COMAC).
DVco44	Explain the terms Implicit Solution and Explicit Solution for the time integration of the equations of motion and the appropriate associated problem classes of dynamic analyses.
DVco53	Discuss frequency range obtainable by FE modal analysis.
DVan1	Analyse the results from dynamic analyses and determine whether they are consistent with assumptions made and the objectives of the analysis.
DVsy2	Plan a dynamic analysis, specifying necessary resources and timescale.
DVsy3	Prepare quality assurance procedures for dynamic finite element analysis activities within an organisation.
DVev3	Assess the significance of simplifying geometry, material models, mass, loads or boundary conditions and damping assumptions on a dynamic analysis.
MPHYpr1	Appropriate levels of Maths, Physics, Engineering Analysis and application.
MPHYpr2	Statements of competence in category FEA, CFD, physical phemena and other relevant modules as appropriate to application and level
MPHYkn1	Define Multi-physics Analysis. List various mono-physics and multi-physics problems, highlighting the relevant interactions in the latter.
MPHYkn2	Differentiate mono- and multi- physics applications. State coupled physics and boundary conditions
MPHYkn3	State major methods for coupling comprehension: Understanding of characteristic time and length scales and their relevance to the simulation
MPHYco4	Explain the terms one-way and two-way coupling and provide examples.
MPHYco5	Review the solution methodologies
MPHYap1	Identify appropriate software tools
MPHYap2	Demonstrate suitability of available software tools to analyse particular application with examples
MPHYap3	Employ available software tools to carry out mono-physics studies relevant to multi-physics investigations.
MPHYap4	Employ available software tools to carry out multi-physics studies.
MPHYap5	Demonstrate the validity of results from available software tools by case studies
MPHYan2	Demonstrate the validity of results from available software tools by case studies
MPHYan3	Establish what physical quantities interact in a solution, where these interactions take place and when.
MPHYan4	Appraise the interaction with real physical phenomena by using examples
MSAkn1	Define Multiscale Analysis
MSAkn2	Sketch the length and times scales associated multiscale analysis
MSAkn3	List the hierarchy of physical models. State the physical forces and phenomena of significance at each scale
MSAkn4	List the computational methods used at the quantum/atomistic scales
MSAkn5	List the computational methods used at the atomistic/micro scales
MSAkn6	List the computational methods used at the meso/macro scales
MSAkn7	Define and list the classical approaches to multi-scale analysis.
MSAkn10	Define and list the different types of errors that can occur in a multiscale analysis, and list techniques that can be used to control these
MSAkn11	Provide a list of commercial software tools for multi-scale analysis
MSAco3	Explain continuum theory and why continuum methods cannot be used at the atomistic scale.
MSAco4	Explain why atomistic methods are not used to model phenomena at larger scales. Explain the differences between Molecular Dynamics and Monte Carlo methods for atomistic scale analysis.
MSAco7	Choose at least six applications requiring multi-scale analysis. Classify them as either type A or type B problems according to the definition given by Weinan.
MSAan1	Analyse the results from the multi-scale analysis and draw conclusions.
MSAan2	Establish at each scale what physical quantities interact in a solution, where these interactions take place and when.
MSAan3	Determine which multi-scale techniques where used in the analysis. Was the multiscale methodology Sequential or Concurrent?
MSAsy4	Formulate a series of simple benchmarks in support of Multi-Scale studies for both Type A and Type B problems.
SIMMkn1	MG - For your organization, state simulation scope and objectives in the product life cycle
SIMMco3	MG - Understand model & analysis documentation scope and contents
SIMMco6	V&V - Explain the terms Verification and Validation.
SIMMco9	V&V - Explain the term model calibration.
SIMMap3	V&V - Conduct validation studies in support of simulation.
SIMMap5	V&V - Perform model calibration from tests
SIMMap6	V&V - Perform test /analysis correlation studies
SIMMan7	V&V - Analyze test data to support validation activities
SIMMsy7	V&V - Prepare a validation plan in support of a FEA study.
SIMMsy8	V&V - Formulate a series of smaller studies, benchmarks or experimental tests in support of a simulation modelling strategy.
SIMMsy9	V&V - Design a test for analysis validation purposes.
SIMMev8	V&V - Train engineering staff in validation techniques

Four-Session Online Training Course

2.5 hours per session
PDH Credits - 10

Attend the live sessions, or view the recordings at your convenience.

Not Available to Attend this Time?

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Please click here to view the FAQ section, or if you need to contact NAFEMS about this course.

Engineering Board PDH Credits

*It is your individual responsibility to check whether these e-learning courses satisfy the criteria set-out by your state engineering board. NAFEMS does not guarantee that your individual board will accept these courses for PDH credit, but we believe that the courses comply with regulations in most US states (except Florida, North Carolina, Louisiana, and New York, where providors are required to be pre-approved)

Special Note(s):

Telephony surcharges may apply for attendees who are located outside of North America, South America and Europe. These surcharges are related to individuals who join the audio portion of the web-meeting by calling in to the provided toll/toll-free teleconferencing lines. We have made a VoIP option available so anyone attending the class can join using a headset (headphones) connected to the computer. There is no associated surcharge to utilize the VoIP option, and is actually encouraged to ensure NAFEMS is able to keep the e-Learning course fees as low as possible. Please send an email to the e-Learning coordinator (e-learning @ nafems.org ) to determine if these surcharges may apply to your specific case.

Just as with a live face-to-face training course, each registration only covers one person. If you plan to register a large group (10+), please send an email to e-learning @ nafems.org in advance for group discounts.

For NAFEMS cancellation and transfer policy, click here.