Laboratory for Dynamics of Machines and Structures 
Damping heat coefficient – Theoretical and experimental research on a vibrating beam
 M. Mihalec, J. Javh, F. Cianetti, M. Moretti, G. Rossi, J. Slavič and M. Boltežar
Journal of Sound and Vibration, Volume 400, 21 July 2017, Pages 13–21

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Več raziskav na temo: optical methods,
Vibrating systems dissipate their vibrational energy through different mechanisms, commonly referred to as damping. Damping converts the vibrational energy into other forms, such as heat and sound radiation. Heating of the material is often assumed to be one of the biggest drains of energy; however, the measurable temperature increase is at the level of milli Kelvin and hard to measure. This research introduces a damping heat coefficient, the coefficient of total dissipated energy that is converted into heat. Using this coefficient, the expected temperature change of a beam is theoretically related to its damping ratio. In addition, the damping heat coefficient is determined experimentally by measuring the temperature increase of a vibrating beam. Based on modal damping, it is shown that different amounts of energy are dissipated at different parts of the structure. The numerical heat model was experimentally confirmed.


Marko Mihalec, doktorski študent

  Rutgers, The State University of New Jersey

Head or R&D

Jaka Javh, dr.


Associate Professor

Filippo Cianetti, dr.

  University of Perugia, Department of Engineering


Michele Moretti, dr.

  University of Perugia, Department of Engineering


Gianluca Rossi, dr.

  University of Perugia, Department of Engineering


Janko Slavič, dr.

  Ladisk, Fakulteta za strojništvo, Univerza v Ljubljani
  +386 1 4771 226
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Miha Boltežar, dr.

  Ladisk, Fakulteta za strojništvo, Univerza v Ljubljani
  +386 1 4771 608
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