Resonant-Based Identification of the Poisson's Ratio of Orthotropic Materials

被引:10
|
作者
Lauwagie, T. [2 ]
Lambrinou, K. [1 ]
Sol, H. [4 ]
Heylen, W. [3 ]
机构
[1] IMEC, B-3001 Louvain, Belgium
[2] Dynam Design Solut, B-3001 Louvain, Belgium
[3] Katholieke Univ Leuven, Dept Mech Engn, B-3001 Louvain, Belgium
[4] Vrije Univ Brussel, Dept Mech Mat & Construct, B-1050 Brussels, Belgium
关键词
Elastic parameters; Poisson's ratio; Vibration methods; Material identification;
D O I
10.1007/s11340-009-9250-9
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The resonant-based identification of the in-plane elastic properties of orthotropic materials implies the estimation of four principal elastic parameters: E (1) , E (2) , G (12) , and nu (12) . The two elastic moduli and the shear modulus can easily be derived from the resonant frequencies of the flexural and torsional vibration modes, respectively. The identification of the Poisson's ratio, however, is much more challenging, since most frequencies are not sufficiently sensitive to it. The present work addresses this problem by determining the test specimen specifications that create the optimal conditions for the identification of the Poisson's ratio. Two methods are suggested for the determination of the Poisson's ratio of orthotropic materials: the first employs the resonant frequencies of a plate-shaped specimen, while the second uses the resonant frequencies of a set of beam-shaped specimens. Both methods are experimentally validated using a stainless steel sheet.
引用
收藏
页码:437 / 447
页数:11
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