Sound and Structural Vibration Radiation, Transmission and Response




Preface to the First Edition

In writing this book my aim has been to present a unified qualitative and

quantitative account of the physical mechanisms and characteristics of linear

interaction between audio-frequency vibrational motion in compressible fluids

and structures with which they are in contact. The primary purpose is to instruct

the reader in theoretical approaches to the modelling and analysis of interactions,

whilst simultaneously providing physical explanations of their dependence upon

the parameters of the coupled systems. It is primarily to the engineering student

that the book is addressed, in the firm belief that a good engineer remains a

student throughout his professional life. A preoccupation with the relevance and

validity of theoretical analyses in relation to practical problems is a hallmark of

the engineer. For this reason there is a strong emphasis on the relationship of

results obtained from theoretical analysis of idealised models and the behaviour

of the less than ideal realities from which they are abstracted.

The teacher of analysis in any sphere of applied science is faced with a central

dilemma: systems which can be modelled and analysed in a manner sufficiently

explicit and direct to illustrate a principle are usually gross oversimplifications

of the real world and are hence, to some extent, trivial; systems which are of

practical concern are usually much too complex to offer suitable examples for

didactic purposes. In attempting to grasp this nettle I hope I may be forgiven

by any physicists and applied mathematicians who may pick up this book for



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