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Vibrations de poutres chargées d'une facon discontinue

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The transverse vibrations of beams resting on an elastic foundation and loaded discontinuously have been measured. The load is expressed as a Fourier series and the problem reduced to a differential equation with periodic coefficient.

By means of a fictitious extension and the introduction of a suitable fictitious loading, a periodic solution is obtained and the coefficients determined by comparison with those in the differential equation. Several examples are given; freee beam, beam built-in, supported and built-in supported.

The natural frequencies and positions of nodes as observed agree satisfactorily with theory.
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Document Type: Research Article

Publication date: January 1, 1958

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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