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Nonlinear Identification of the Viscous Damping of the Resistor for Nuclear Plants

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  • First Online:
Topics in Modal Analysis, Volume 7

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Abstract

A procedure for the nonlinear modal analysis of a resistor is presented in this paper. The identification process aims at assessing the viscous damping factor of the structure including the nonlinear terms in the frequency response function with the harmonic balance method. For this purpose a simplified single DOF system has been adopted to describe the nonlinear behavior. A good agreement between numerical and experimental results has been achieved.

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Abbreviations

Ω:

Excitation frequency

ξ:

Viscous damping factor

ω:

Natural frequency of the system

A:

Modal constant

H:

Frequency response function

S:

Spectrum

k1 :

Mass-normalized linear stiffness

k3 :

Mass-normalized cubic stiffness

r1 :

Mass-normalized linear viscous damping

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Author information

Authors and Affiliations

  1. Department of Mechanical Engineering, Politecnico di Milano, Via la Masa 1, 20158, Milano, Italy

    Giancarlo Galli, Francesco Braghin & Edoardo Sabbioni

Authors
  1. Giancarlo Galli
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  2. Francesco Braghin
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  3. Edoardo Sabbioni
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Corresponding author

Correspondence to Francesco Braghin .

Editor information

Editors and Affiliations

  1. University of Cincinnati, Cincinnati, 45221-0018, Ohio, USA

    Randall Allemang

  2. , The Enterprise Program, Michigan Technological University, Townsend Drive 1400, Houghton, 49931, Mississippi, USA

    James De Clerck

  3. , Dept. of Mechanical Engineering, University of Massachusetts Lowell, Riverside St. 197, Lowell, 01854, Massachusetts, USA

    Christopher Niezrecki

  4. & State University, Department of Mechanical Engineering, Virginia Polytechnic Institute, Randolph Hall 114 T, Blacksburg, 24060, Virginia, USA

    Alfred Wicks

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© 2014 The Society for Experimental Mechanics

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Galli, G., Braghin, F., Sabbioni, E. (2014). Nonlinear Identification of the Viscous Damping of the Resistor for Nuclear Plants. In: Allemang, R., De Clerck, J., Niezrecki, C., Wicks, A. (eds) Topics in Modal Analysis, Volume 7. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-6585-0_37

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  • DOI: https://doi.org/10.1007/978-1-4614-6585-0_37

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  • Publisher Name: Springer, New York, NY

  • Print ISBN: 978-1-4614-6584-3

  • Online ISBN: 978-1-4614-6585-0

  • eBook Packages: EngineeringEngineering (R0)

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