- Email: [email protected]
Driveline '84
applies to the material chapters. A chapter on gears is a welcome addition, as this topic was not covered in Volume 1. The same high standard of editing has been maintained in this volume and the reproduction is excellent with very few textual errors. SI Units are used in the main, but in some cases unthinking conversions have been used that give a misleading impression of precision; for example, in referring to the limit for a
segmental seal the value of 10 psi is converted to 68.96 kPa! Once again this second volume is a remarkable compilation of information on tribology; it is a pity that the high price of this excellent source book will inevitably limit it to a few library shelves rather than in the individual's office where it would certainly find frequent use. D Summers-Smith
Driveline '84 A major purpose of the background reading of any specialist must be the identification of problems emerging in other areas but calling for action in his own particular sphere of interest. This is certainly true for tribology where current preoccupations differ significantly from those of even five years ago.
reference to mechanical continuously variable transmissions, the detailed developments of various components with special reference to noise reduction and the improvement of efficiency. There are also descriptions of test procedures for simulated road conditions.
This publication, the proceedings of a Conference held by the Automobile Division of the Institution of Mechanical Engineers in March 1984, serves this purpose excellently for one important field of tribological interest. The thirteen papers contained in the publication of 113 pages give a comprehensive and up-to-date review of the state of development in the field of vehicle mechanical transmissions.
It is evident that the industry is still much under the influence of the "Post 1980 Goals for Commercial Motor Vehicles" published by the United States' Department of Transportation: development goals are much concerned with the reduction of mechanical losses. The relevance of tribological studies to the achievement of this objective is obvious. The publication gives useful indications of the particular areas in which the tribologist may be expected to make a contribution.
Topics include recent designs of gearboxes and transmission lines for both heavy and light vehicles with special Published, p~iced £19. O0 (£15.00 in the UK), by Mechanical Engineering Publications Ltd, PO Box 24, Northgate Avenue, Bury St Edmunds, Suffolk IP32 6BW, UK.
M.A. Plint Plint & Partners Ltd Fishponds Road, Wokingham RG 11 2 0 t , UK
proportions to minimize temperature rise within the bearing. I particularly liked the practical points of general design which state in a concise way factors which aid good design. The author has developed simple design procedures for thrust pads presenting equations for load and flow rate for a wide range of configurations. Stiffness considerations are featured in Chapter 5 where control devices are considered. I would have preferred to see Chapter 5 before Chapter 4 and as a result stiffness considerations of fiat pads may then have been covered at that stage. A useful feature of Chapter 5, however, is the comprehensive discussion of control devices (the subject of an award winning paper by Professor Rowe earlier in his career). Chapter 6 has great interest for me, and also I suspect designers of bearing systems. Clearly, manufacturing tolerances can have a serious effect on bearing performance. The most important parameter to control is bearing clearance and this is compre. hensively covered in the chapter. Chapter 7 is a comprehensive treatment of plane pads, giving load and stiffness design charts specifically aimed at the designer. The section on complex pad arrangements is significantly useful. The chapters on journal bearings are also particularly useful since a large section of designs will involve these types of bearing. The inclusion of interactive design charts makes design simple and very effective since several parameters may be adjusted and their effects evaluated and compared. The Final chapters of the book are concerned with minority design cases but are usefully included as alternative possibilities.
This, the first book on the subject since 'Hydrostatic Bearings' by Stansfield, published by Machinery Publishing Company in 1970, is a timely and useful contribution to the subject. It introduces its subject by considering what a hydrostatic bearing is, and how it can
be advantageously employed. The author then develops the basic theory for these bearings, keeping the analysis simple but easily digestible and directly usable. The author should be complimented on the concise nature of this chapter.
It has been a pleasure to read and review this book. Professor Rowe has minimized the analytical content and concentrated mainly on its use as a designer aid. He is to be congratulated on its composition; he has carefully and meticulously trod a path of good design practice and provided a selection of well-chosen design examples to illustrate its application. This book should prove capable of solving many design needs and warn designers against problem areas. It is a useful text and should become a reference work for many years to come.
Published by Butterworths, PO Box 63, Westbury House, Bury Street, GuiMford, Surrey GU2 5BH, UK, priced £30.00. ISBN 0408 01324-9
Chapter 3 considers the important area of power and temperature rise. It is essential to balance friction power and pumping power in the appropriate
K.J. Stout Coventry Polytechnic, UK
Hydrostatic and Hybrid Bearing Design 14/.8. Rowe
TR IBOLOGY international
175
segmental seal the value of 10 psi is converted to 68.96 kPa! Once again this second volume is a remarkable compilation of information on tribology; it is a pity that the high price of this excellent source book will inevitably limit it to a few library shelves rather than in the individual's office where it would certainly find frequent use. D Summers-Smith
Driveline '84 A major purpose of the background reading of any specialist must be the identification of problems emerging in other areas but calling for action in his own particular sphere of interest. This is certainly true for tribology where current preoccupations differ significantly from those of even five years ago.
reference to mechanical continuously variable transmissions, the detailed developments of various components with special reference to noise reduction and the improvement of efficiency. There are also descriptions of test procedures for simulated road conditions.
This publication, the proceedings of a Conference held by the Automobile Division of the Institution of Mechanical Engineers in March 1984, serves this purpose excellently for one important field of tribological interest. The thirteen papers contained in the publication of 113 pages give a comprehensive and up-to-date review of the state of development in the field of vehicle mechanical transmissions.
It is evident that the industry is still much under the influence of the "Post 1980 Goals for Commercial Motor Vehicles" published by the United States' Department of Transportation: development goals are much concerned with the reduction of mechanical losses. The relevance of tribological studies to the achievement of this objective is obvious. The publication gives useful indications of the particular areas in which the tribologist may be expected to make a contribution.
Topics include recent designs of gearboxes and transmission lines for both heavy and light vehicles with special Published, p~iced £19. O0 (£15.00 in the UK), by Mechanical Engineering Publications Ltd, PO Box 24, Northgate Avenue, Bury St Edmunds, Suffolk IP32 6BW, UK.
M.A. Plint Plint & Partners Ltd Fishponds Road, Wokingham RG 11 2 0 t , UK
proportions to minimize temperature rise within the bearing. I particularly liked the practical points of general design which state in a concise way factors which aid good design. The author has developed simple design procedures for thrust pads presenting equations for load and flow rate for a wide range of configurations. Stiffness considerations are featured in Chapter 5 where control devices are considered. I would have preferred to see Chapter 5 before Chapter 4 and as a result stiffness considerations of fiat pads may then have been covered at that stage. A useful feature of Chapter 5, however, is the comprehensive discussion of control devices (the subject of an award winning paper by Professor Rowe earlier in his career). Chapter 6 has great interest for me, and also I suspect designers of bearing systems. Clearly, manufacturing tolerances can have a serious effect on bearing performance. The most important parameter to control is bearing clearance and this is compre. hensively covered in the chapter. Chapter 7 is a comprehensive treatment of plane pads, giving load and stiffness design charts specifically aimed at the designer. The section on complex pad arrangements is significantly useful. The chapters on journal bearings are also particularly useful since a large section of designs will involve these types of bearing. The inclusion of interactive design charts makes design simple and very effective since several parameters may be adjusted and their effects evaluated and compared. The Final chapters of the book are concerned with minority design cases but are usefully included as alternative possibilities.
This, the first book on the subject since 'Hydrostatic Bearings' by Stansfield, published by Machinery Publishing Company in 1970, is a timely and useful contribution to the subject. It introduces its subject by considering what a hydrostatic bearing is, and how it can
be advantageously employed. The author then develops the basic theory for these bearings, keeping the analysis simple but easily digestible and directly usable. The author should be complimented on the concise nature of this chapter.
It has been a pleasure to read and review this book. Professor Rowe has minimized the analytical content and concentrated mainly on its use as a designer aid. He is to be congratulated on its composition; he has carefully and meticulously trod a path of good design practice and provided a selection of well-chosen design examples to illustrate its application. This book should prove capable of solving many design needs and warn designers against problem areas. It is a useful text and should become a reference work for many years to come.
Published by Butterworths, PO Box 63, Westbury House, Bury Street, GuiMford, Surrey GU2 5BH, UK, priced £30.00. ISBN 0408 01324-9
Chapter 3 considers the important area of power and temperature rise. It is essential to balance friction power and pumping power in the appropriate
K.J. Stout Coventry Polytechnic, UK
Hydrostatic and Hybrid Bearing Design 14/.8. Rowe
TR IBOLOGY international
175