A Wave Based Prediction Technique for the Dynamic Response Analysis of Plates with Random Point Mass Distributions

摘要

The Finite Element Method and the Statistical Energy Analysis are most commonly used for the analysis of the dynamical behaviour of mechanical structures. However, the first is limited to applications in the low-frequency range, while the latter is only applicable high frequencies. In the mid-frequency range there is a lack of methods techniques to model assemblies with the combination of components with a low-frequency behaviour and components with a high-frequency behaviour. This paper presents a deterministic Wave Based Method for efficient Monte Carlo simulations of the dynamic response of flexible plates with point masses distributed randomly. The effect of random point mass distributions on the dynamic response can be representative for the typical variability encountered in mechanical systems. The performance of the proposed method is illustrated through a numerical validation example.