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| HAL: hal-00573942, version 1 |
| DOI: 10.3390/e12122418 |
| Detailed view |  Export this paper |
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| Entropy 12 (2010) 2418-2435 |
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| Statistical Vibroacoustics and Entropy Concept |
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| Alain Le Bot 1Antonio Carcaterra 2 |
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| (2010) |
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| Statistical vibroacoustics, also called statistical energy analysis (SEA) in the field of engineering, is born from the application of statistical physics concepts to the study of random vibration in mechanical and acoustical systems. This article is a discussion on the thermodynamic foundation for that approach with particular emphasis devoted to the meaning of entropy, a concept missing in SEA. The theory focuses on vibration confined to the audio frequency range. In this frequency band, heat is defined as random vibration that is disordered vibration and temperature is the vibration energy per mode. Always in this frequency band, the concept of entropy is introduced and its meaning and role in vibroacoustics are enlightened, together with the related evolutionary equation. It is shown that statistical vibroacoustics is non-equilibrium thermodynamics applied to the audio range. |
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| 1: | Laboratoire de Tribologie et Dynamique des Systèmes (LTDS) |
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CNRS : UMR5513 – Ecole Centrale de Lyon – Ecole Nationale d'Ingénieurs de Saint Etienne |
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| 2: | Department of Mechanics and Aeronautics |
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University of Rome "La Sapienza" |
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| Subject | : | Physics/Mechanics/Acoustics Engineering Sciences/Acoustics |
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| entropy – non-equilibrium thermodynamics – vibroacoustics – statistical energy analysis – friction |
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| hal-00573942, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00573942 | |
| oai:hal.archives-ouvertes.fr:hal-00573942 | |
| From: Alain Le Bot | |
| Submitted on: Saturday, 5 March 2011 21:37:27 | |
| Updated on: Thursday, 17 March 2011 18:18:30 | |
