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Design of a Frequency-Energy Independent Nonlinear Oscillator

  • Martin Jerschl
  • Kai Willner
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

A method for the design of a frequency-energy independent nonlinear oscillator, for example a jointed system, is presented. Usually, nonlinear dynamic systems are energy dependent. For a geometrically nonlinear system the eigenfrequency increases with rising energy in the system. For a friction damped system the opposite is the case. These two contrary behaviours of nonlinear system types are used to design a frequency-energy-independent system. The Hilbert-transform is used as a design tool in combination with the Multi-Harmonic-Balance-Method (MHBM). An approach for automated design is introduced.

Keywords

Friction Hilbert transform Nonlinear dynamics Nonlinear normal modes (NNMs) Optimal system design 

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Copyright information

© The Society for Experimental Mechanics, Inc. 2017

Authors and Affiliations

  1. 1.Chair of Applied MechanicsFriedrich-Alexander Universitaet Erlangen-NuernbergErlangenGermany

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