Wet Brake & Clutch Technology

I.D. #

90002

Duration

2 Days

This course will provide attendees with state-of-the-art information about wet clutches and brakes for the design of industrial machinery and vehicular clutches and brakes. These clutches and brakes offer longer life and better energy management without the use of asbestos. The basics of shear of oil between stators and rotors will be used as the foundation for understanding sound design principles. This will be followed by lectures on lubricants, facing materials, and reaction surfaces. The nature of heat transfer and forced cooling will be explained. Finally, an overview of design principles for brakes and clutches will be presented, with example calculations for the more important issues encountered by engineers.

Learning Objectives

By attending this seminar, you will be able to:

Describe the fundamental design principles that govern best practices in wet clutches and brakes
Discuss the basics of shear of oil between the stator and rotor
Contrast the differences between classical lubrication theory and the theory of confined films

Who Should Attend

This course is intended for engineers, designers and engineering managers who desire a thorough understanding of wet disc clutches and brakes.

Prerequisites

An undergraduate degree in any engineering discipline is recommended, but not essential. The use of calculus in some advanced calculations is demonstrated, but understanding of these calculations is not essential to the basic ideas presented.

Seminar Content

Introduction
- Seminar overview
- Thermodynamic principles and energy dissipation
- Basic torque equations
- Cost of ownership principles
Wet Friction Principles
- Hydrodynamic principles
- Torque, speed, and pressure effects
- Classic lubrication principles
- Motion of confined fluids: The Coherent Model
- Lubricant families and types
- Stick-slip, vibration and noise
Friction Material Technology
- Friction material types and properties
- Material families and manufacturing methods
- Failure modes: causes and effects
- Reaction surfaces: materials, finishes, and processes
Heat Transfer, Cooling Oil Effects, and Temperature Assessment - General Comments
- Heat transfer for rotating discs
- Contrast between brakes and clutches
- Energy and power density analysis
- Equilibrium and transient temperatures
- Forced oil cooling effects
- Viscous drag loss analysis
Introduction to Brakes
- Brake definition
- Brake location, torque and angular viscosity
- Vehicle dynamics and equations
- Dynamic weight transfer effects
Brake Actuation Systems
- Actuation methods
- Hydraulic actuation: actuating devices and systems
- Hydraulic actuation: seals, pistons and volume considerations
Brake Design Review
- Hydraulically actuated designs
- Spring applied designs
- Ball ramp systems
Thermal Analysis of Braking Systems: Example Problems
- Panic Stop: energy and power density, equilibrium, and non-equilibrium temperatures
- Forced cooling effects
- Continuous drag/retardation analysis
Introduction to Clutches
- Clutch definition
- Synchronization clutch
- Torque limiting clutch
Energy and Power Analysis Principles
- Power concepts
- Modulation
- Energy and time
- General equations
Kinematics & General Design Analysis
- Kinematic effects
- Disc clutches
- Cone clutches
- Band clutches
- Lubrication considerations
- Design examples and breakdown
Energy and Heat Transfer - Clutch Example
- Powershift clutch example
- Torque and energy calculations
- Heat transfer calculations
- Torque limiter example

Instructor(s):

Michael A. Anleitner

Michael A. Anleitner is President of Livonia Technical Services Company, a consulting and training firm that provides technical and managerial expertise to companies engaged in manufacturing and assembly of commercial, industrial, and consumer products. His activities at LTS include quality and productivity improvement, product development, process improvement, total quality system implementation, and technical engineering support. Mr. Anleitner has over 30 years of diversified experience in manufacturing and engineering. He was co-founder, and for seven years, CEO of HydraMechanica Corporation, which produced brakes, clutches, torque-limiting devices, friction materials, and other special friction products for a variety of applications. Prior to that, he was the Director of Engineering for a Tier I automotive supplier. His experience includes positions at Ford Motor Company in both materials and design engineering.

Mr. Anleitner has co-authored several papers published by the American Society for Quality and regularly speaks at Automotive Division meetings of ASQ. He is also a contributor to the Society of Automotive Engineers Technical Paper Series, has had three papers selected for SAE's Transactions, and has been honored with SAE's Award for Excellence in Oral Presentation. Mr. Anleitner received a B.A. in technical communications from Michigan Technological University, a B.S. in engineering from Wayne State University, and an M.B.A. from the University of Michigan.

Testimonial

"A very good program for understanding the models and characteristics of oil film friction."

Brian Dennis
Product Engineer
Ausco Products

"A course good for all levels of engineering personnel involved in wet brake design."

Paul Moon
Chief Engineer - Components
Franklin Equipment Company

"Mike Anleitner has a freakish amount of real world experience to provide examples that bring theory to life."
Todd Carlson
Sales Account Manager
Means Industries

"Encompassing and very practical knowledge was presented making the complicated seem simple!"
Earl Burrows
Mech. Engineer
Naval Air Warfare Center

"A clear, concise introduction to wet friction."
Derek Wilson
Senior Brake Engineer
General Dynamics Land Systems-Canada

"Best comprehensive wet friction survey and integration of information available in the world."
Dave Bortz
President
Tribco Inc.

"A great course to develop a basic understanding of clutches and brakes."
Tim Clapp
Mech. Engineer
PT Tech

"The course and the very knowledgeable instructor, not only covers the wet brake technology adequately but prepares the attendees for immediate and effective use of the knowledge."
Niladri Das
Manager Exhaust
Visteon Corporation

Fees:

$1155

SAE Members*:

$924 - $1040

* The appropriate SAE Member discount will be applied through the Registration process. Discounts vary according to level of membership: Elite Member 20%; Premium Member 15%; Classic Member 10%

CEU

1.3