Finite element analysis validation of a novel experimental modal analysis method

摘要

In this paper, we propose and validate an approach using Experimental Modal Analysis (EMA) based on Frequency Response Function (FRF) for machine vibration analysis. The EMA utilizes a set of accelerometers as vibration sensors to gather vibration measurements at selected locations on the machine, from which the relative sensitivities are computed to yield a sensitivity map. This sensitivity map is useful to examine the vibration behaviour of the mechanical structure and determine the final placement of monitoring sensors. The proposed approach is evaluated and benchmarked with Finite Element Analysis (FEA) model.