期刊
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
卷 110, 期 -, 页码 294-304出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijsolstr.2016.12.007
关键词
Fiber-reinforced composites; Wave propagation; Finite deformations; Dispersion; Transversely isotropic; Micromechanics
类别
资金
- Israel Science Foundation [21550/15, 1973/15]
- Taub Foundation through the Horev Fellowship - Leaders in Science and Technology
- Technion Postdoctoral Fellowship
We investigate the propagation of shear waves in finitely deformed 3D fiber-reinforced composites. We employ a micromechanics based approach and derive explicit expressions for the phase and group velocities of the shear waves in the long wave limit. Thus, we obtain the important characteristics of the shear waves in terms of the volume fractions and material properties of the constituents. We find that the phase and group velocities significantly depend on the applied deformation and direction of wave propagation. To account for interactions between the elastic waves and microstructure in finitely deformed 3D periodic fiber-reinforced materials, we employ the Bloch wave analysis superimposed on large macroscopically applied homogeneous deformations, and we implement the technique into a finite element code. The Bloch wave numerical analysis reveals the essential dispersion phenomenon for the shear waves propagating along the fibers in the finitely deformed 3D periodic fiber-reinforced materials. We find that the appearance of the dispersion phenomenon and the corresponding wavelengths can be tuned by material composition and deformation. (C) 2016 Elsevier Ltd. All rights reserved.
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