Mechanical Shock (Mechanical Vibration and Shock)
by: Christian Lalanne
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Topics include: shock response spectra, shock response spectrum, half sine shock, fast swept sine, shock spectrum, tooth shock, rectangular shock, perfect rebound, specified shock, tooth pulse, terminal peak, universal programmer, specified spectrum, negative spectra, rms duration, decaying sinusoid, shock duration, pyrotechnic shocks, shock amplitude, elementary waveform, versed sine, using shakers, principal shock, residual shock, shock machines
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First Sentence:
Shock is defined as a vibratory excitation with duration between once and twice the natural period of the excited mechanical system.
This important new series of five volumes has been written with both the professional engineers and the academic in mind. Christian Lalanne explores every aspect of vibration and shock, two fundamental and crucially important areas of mechanical engineering, from both the theoretical and practical standpoints. As all products need to be designed to withstand the environmental conditions to which they are likely to be subjected, prototypes must be verified by calculation and laboratory tests, the latter according to specifications from national or international standards. The concept of tailoring the product to its environment has gradually developed whereby, from the very start of a design project, through the to the standards specifications and testing procedures on the prototype, the real environment in which the product being tested will be functioning is taken into account. The five volumes of Mechanical Shock and Vibration cover all the issues that need to be addressed in this area of mechanical engineering. The theoretical analyses are placed in the context of the real world and of laboratory tests - essential for the development of specifications. Vol II: Mechanical Shock
This volume considers the shock response spectrum, its various definitions, its properties and the assumptions involved in its calculation. In developing the practical application of these concepts, the shock shapes most often used with test facilities are presented, togther with their characteristics and indications of how to establish test configurations comparable with those of the real, mesured environment. There follows a demonstration of how to meet these specifications using standard laboratory equipment - shock machines, electrodynamic exciters driven by a time signal or a response spectrum - with discussion of the limitations, advantages and disadvantages of each method.
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