Summary
Having recalled a few essential definitions in the theory of internal friction in solids, the authors, in a first chapter, study the propagation of longitudinal waves in a rod; they start from a simple law relating locally stress, strain and their first derivatives with respect to time. This law which is more general thanHooke's law has been proposed first byZener to explain the anelastic behaviour of a standard linear solid. The authors calculate the internal friction resulting from energy dissipation when the vibration is forced then free. The second chapter deals with problems arising when one tries to measure the internal friction in flexure of metallic specimens having the shape of rods or circular plates. The authors develop the basic flexure equations applied to the two types of specimen; then they determine the fundamental characteristics, which appear in internal friction measurement purposes.
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Recherche bénéficant d'un subside du Fonds National Suisses de la Recherche Scientifique (Commission pour la Science Atomique, FN A 176).
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Vittoz, B., Secrétan, B. & Martinet, B. Frottement interne et anélasticité des solides. Journal of Applied Mathematics and Physics (ZAMP) 14, 46–69 (1963). https://doi.org/10.1007/BF01601145
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DOI: https://doi.org/10.1007/BF01601145