Observations of modal coupling due to bolted joints in an experimental benchmark structure

Mitchell Wall,Matthew S. Allen,Robert J. Kuether

Mechanical Systems and Signal Processing（2022）

引用 13|浏览7

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摘要

•Experimental measurements show coupling between modes due to friction in bolted joints.•One-way coupling is observed where Mode 2 affects Mode 1 but not the reverse.•Micro-scale geometry is carefully characterized and included in finite element models.•Nonlinear contact simulations predict natural frequency versus preload.

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关键词

Averaging method,Modal model,Bolted joint,Modal coupling,Free-decay backbone curves

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