Vibro-acoustic energy flow through spot-welds in Dynamical Energy Analysis
Dynamical Energy Analysis (DEA) in the form of Discrete Flow Mapping (DFM) is a fairly new mesh-based method for numerically modelling structure borne sound transmission in complex structures. A key feature is the possibility to work directly on existing finite element (FE) meshes avoiding
time-consuming and costly re-modelling. Furthermore, DFM provides detailed spatial information about the vibrational energy distribution within a complex structure in the mid-to-high frequency range. In this work we will illustrate the method using a car floor structure which consists of a
big panel and several rails connected by spot welds modeled in FE through Rigid Body Elements (RBE).
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Document Type: Research Article
Publication date: 21 August 2016
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