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DEA - Dynamical Energy Analysis

Ship with engine excitation. Plate radiation levels (color scheme) and cavity noise levels (blue).

A new product to solve your vibro-acoustic problems across the whole frequency range!

Motivation

Predicting wave energy distributions for short-wavelength vibrations, elastic deformations or acoustic radiation in complex built-up structures is a challenging task. An efficient, reliable and universal algorithm is now available based on a new technique called Dynamical Energy Analysis (DEA) covering the mid-to-high frequency range.

Advantages of DEA

Shock tower of a car. Comparison between FEM frequency averaged and DEA result.

Application

Features

Getting the Simulation Tool

For more information and to order the product, please contact us at dea@inutech.de.

Origin of the method

The core of the DEA method originates from research results of Gregor Tanner, associate professor at the School of Mathematical Sciences, University of Nottingham. Within the EU project MiDEA, the academical results have been implemented into software and since then have been extended for practical use by InuTech GmbH.

Discrete Flow Mapping DFM

The term DEA describes the method in general. The term DFM (Discrete Flow Mapping) is used in science for the specific software implementation of DEA on triangulated meshes. Triangulated meshes are a too strong restriction in industrial applications. Therefore, inuTech implements an extended version of DFM that is capable to treat quadrilateral and any convex polygonal elements. Thus, finite element meshes (FEM) are fully supported.

Abbreviations

 

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