By Gerhard Müller, Michael Möser
This acoustics guide for mechanical and architectural functions is a translation of the German common paintings at the topic. It not just describes the nation of artwork of engineering acoustics but additionally offers useful support to engineers for fixing acoustic difficulties. It bargains with the foundation, the transmission and the equipment of abatement of air-borne and structure-borne sound of other varieties, from site visitors to equipment and circulation brought on sound.
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Extra resources for Handbook of Engineering Acoustics
The modal excitation depends on the location of the exciting force with respect to the individual modes, often expressed by the deviation of the wave number of excitation from the wave number of the eigenform. For frequencies that are significantly lower than the eigenfrequency, the stiffness (modal stiffness) is relevant for the dynamic response, whereas for frequencies significantly above the eigenfrequency, the mass (modal mass) is governing. For frequencies in the resonant range, the vibration depends on the damping.
4 Cylinder Momentum-free support at the edges: 3. 1 Cavity with air or fluid: Rectangular with rigid walls: Rectangular with soft walls: Cylindrical with rigid walls: Remarks: length of edges, radius, angle, H tension of the string, mass per length, V volume, bending stiffness of a beam, tension of the membrane, thickness, B bending stiffness of a plate, Poisson’s ratio, number of modes in the frequency range . 9 as well as in . 3 Wave Impedances The wave impedance describes the relationship between the amplitude of an exciting pressure (sinusoidally varying with respect to space and time) to that of the velocity of the excited structure.
Müller From the Preface to the Second Edition of the “Taschenbuch der Technischen Akustik” The Handbook of Technical Acoustics aims to provide a broad audience with a quick and reliable source of information on engineering questions. , mechanical engineering, process engineering, traffic systems or civil engineering, who deal with the topic of noise reduction. In light of the increasing significance of environmental protection, a number of articles cover the generation, transmission, insulation, measurement and assessment of air, and structure borne noise; at the same time, questions pertaining to electroacoustics, roomacoustics and audio-physiology are discussed in detail.