Dynamic transient analysis of friction noise in the trimmer blade system

The objective of this paper is to analyze the friction noise of trimmer blade during simulations and experiments. First, a finite element model of the whole blade assembly is established to obtain material properties by using experimental modal analysis. Second, rigid dynamic analysis of the trimmer transmission system gives displacement results which are used as the boundary condition of transient dynamic analysis. Finally, a correlation between experimental and numerical results is proposed successfully for an industrial trimmer blade system. A finding that the trimmer blade friction-induced noise can be predicted by transient dynamic analysis is expected to apply to other applications.