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A macroscopic model on the dynamic behaviour of open cell foams
Author(s) -
Kirchhof Stephan,
Ams Alfons
Publication year - 2018
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201800190
Subject(s) - vibration , stochastic modelling , statistic , statistical physics , spectral properties , natural frequency , mechanics , materials science , computer science , physics , mathematics , acoustics , statistics , astrophysics
Open cell foams are widely used in engineering which includes an application in areas, where vibration excitations can act on the structures. Therefore dynamical properties as eigenfrequencies and natural modes are of great interest. Here a modelling approach of the dynamic behaviour of open cell foams by macroscopic stochastic models will be discussed. Based on a 3D computed tomography scan of the foam, statistic and spectral analysis has been carried out to determine the parameters of the stochastic model. Additionally a vibration measurement has been done to provide eigenfrequencies, frequency transfer functions and natural modes of the real foam, which can be compared with the simulation results of the macroscopic model.