MECHANICAL CHARACTERIZATION OF ACOUSTIC FOAMS

被引：0
|
作者：
Sahraoui, S. [1 ]
Geslain, A. [1 ]
Brouard, B. [1 ]
Parmentier, D. [2 ]
机构：
[1] Univ Maine, CNRS UMR 6613, LAUM, Av O Messiaen, F-72085 Le Mans, France
[2] CTTM, F-72000 Le Mans, France
来源：
ICEM15: 15TH INTERNATIONAL CONFERENCE ON EXPERIMENTAL MECHANICS | 2012年
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D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper presents a quasi-static method for the characterization of the viscoelastic properties of polyurethane foams. A compression test setup is used to measure the compression stiffness of cubic sample for checking the isotropy or for evaluating the degree of anisotropy. For isotropic materials the Young's modulus and the Poisson's ratio are determined through normalised stiffness ratios built by the finite element method for brick-shaped at various shape factors. The measured stiffness of samples cut in a foam plate and the juxtaposition of two samples give an easy extraction of the elastic constants at low frequency. This approach is extended to disk-shaped samples.
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页数：2
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