Modal interactions due to friction in the nonlinear vibration response of the “Harmony” test structure: Experiments and simulations

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• 作者：M. Claeys^a ; ^b ; J-J. Sinou^b ; ^c ; ^{jean-jacques.sinou@ec-lyon.fr" class="auth_mail" title="E-mail the corresponding author} ; J-P. Lambelin^a ; R. Todeschini^a
• 关键词：Nonlinear vibration ; Friction ; Experiments ; Harmonic Balance Method
• 刊名：Journal of Sound and Vibration
• 出版年：2016
• 出版时间：18 August 2016
• 年：2016
• 卷：376
• 期：Complete
• 页码：131-148
• 全文大小：4628 K

文摘

The nonlinear vibration response of an assembly with friction joints – named “Harmony” – is studied both experimentally and numerically. The experimental results exhibit a softening effect and an increase of dissipation with excitation level. Modal interactions due to friction are also evidenced.

The numerical methodology proposed groups together well-known structural dynamic methods, including finite elements, substructuring, Harmonic Balance and continuation methods. On the one hand, the application of this methodology proves its capacity to treat a complex system where several friction movements occur at the same time. On the other hand, the main contribution of this paper is the experimental and numerical study of evidence of modal interactions due to friction. The simulation methodology succeeds in reproducing complex form of dynamic behavior such as these modal interactions.