Numerical prediction of damping in structures with frictional joints
by Henrik Wentzel, Marten Olsson
International Journal of Vehicle Noise and Vibration (IJVNV), Vol. 2, No. 2, 2006

Abstract: In many vehicle and space structures, friction in bolted joints is the primary source of energy dissipation during vibrations. Several simplified finite element models have proven their capacity to describe the energy dissipation owing to micro-slip in joints. However, these simplified models require extensive physical testing in order to extract model parameters. This paper proposes a methodology based on non-linear FE-analysis of the loading on joints for numerical evaluation of the energy dissipation due to micro-slip. The methodology is extended to allow for computation of modal damping in vibrating structures. Presented applications include studies of an isolated joint as well as a more complex structure subjected to dynamic excitation.

Online publication date: Thu, 05-Oct-2006

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