9R5. Reciprocating Machinery Dynamics: Design and Analysis. - AS Rangwala (Center for Eng Tech, Cincinnati OH). Marcel Dekker, New York. 2001. 761 pp. CD-ROM included. ISBN 0-8247-0531-9. $195.00.
Reviewed by EL Amromin and S Kovinskaya (Mechmath LLC, 2109 Windsong, Edmond OK 73034).
In recent decades, diverse structural dynamics software has became an important tool in machinery design. However, the application of software requires from a designer or an engineer deep understanding of structural dynamics and physics of modeling machines. The author considers probably all significant mechanical, acoustical, thermal, and fluid-related processes in reciprocating machinery. Because of the comprehensive analysis of numerous processes that has to be taken into account in design, this book is an excellent textbook for students and a helpful guide for practicing engineers. The author has put together problems that the engineer can meet. There are conceptual design, dynamic analysis, problems of optimization, and corresponding measurements.
Because reciprocating machinery is broadly used in numerous engines, pumps, and other devices, this book includes classification and construction of reciprocating machines. The dynamic analysis of the machinery in the book is based on several selected topics of classical vibration theory described in a few chapters that are thoughtfully distributed in the text. As was mentioned above, the range of described physical phenomena is very wide. It seems that a reader can find any problem related to this machinery.
Reciprocating machinery transfers significant flux of energy, but some part of energy is spent for troubling vibration and noise. It is both a technical and environmental problem to reduce this. The book contains procedures for noise evaluation, methods to control noise, and some measurement and signal processing techniques.
There are 14 chapters namely, Vibrational Theory Fundamentals, Classification and Construction of Reciprocating Machinery, The Crankshaft and Associated Components, Crank Mechanism Dynamics, Balancing of Periodic Inertia and Gas Pressure Loads, Torsional Vibrations, Flexural Vibrations, Advanced Analytical Methods, Vibration Measurement and Balancing, Applications from Computational Fluid Dynamics, Pressure Pulsations in Compressors and Pumps, Reciprocating Machinery Dynamics and Noise, Design Optimization, and Computer Programs Illustrating Case Histories. Fundamentals of vibration theory are introduced in Chapter 1. The overall description of contemporary reciprocating machinery in Chapter 2 and a detailed description of crankshafts in Chapter 3 give the necessary knowledge for any reader, regardless of his background. Chapter 4 gives initial information on dynamics of some selected devices. The general explanation on mechanical equilibrium of reciprocating machinery elements and their vibration is done in Chapters 5, 6, 7, and 11; the noise-related issues are discussed in Chapter 12. Chapters 8, 9, and 10 give an introduction to employment of analytical, experimental, and computational methods to the above mechanical problem. Some information on employment of custom software and design optimization can be found in Chapters 13 and 14. Each chapter has references and a bibliography and helpful solutions of example problems.
The book’s mathematical basis looks optimal for the wide audience of engineers. There are several unavoidable differential equations where it is necessary for operations with principal categories, but many secondary details are avoided. The author prefers to discuss rather quite simple formulas, and this is generally reasonable in a textbook. The author’s intent is to describe a large variety of physical phenomena; their profound description would be impossible in this one book.
All chapters are well illustrated, and figures are clear enough. One can find a weakness in their certain simplification; for example, flow-related measurements (like in Figs. 10.8, 10.10, 11.21) should be presented with dispersion that always occurs in experiments. However, such illustrations correspond to the author’s aim. Some definitions should be described with the additional conditions that are default.
Nevertheless, based on an overall impression, Reciprocating Machinery Dynamics: Design and Analysis is an excellent textbook. Its price does not look too high, and it is appropriate for purchase by both libraries and individuals.