Numerical simulation of the guided Lamb wave propagation in particle reinforced composites

作者：Weber Ralf^*; Hosseini Seyed Mohammad Hossein; Gabbert Ulrich

来源：Composite Structures, 2012, 94(10): 3064-3071.

DOI：10.1016/j.compstruct.2012.04.020

• Lamb wave
• Particle reinforced composite
• Homogenization
• FEM
• SAFE

This paper deals with the investigation of the Lamb wave propagation in particle reinforced composites excited by piezoelectric patch actuators. A three-dimensional finite element method (FEM) modeling approach is set up to perform parameter studies in order to better understand how the Lamb wave propagation in particle reinforced composite plates is affected by change of central frequency of excitation signal, volume fraction of particles, size of particles and stiffness to density ratio of particles. Furthermore, the influence of different arrangements is investigated. Finally, the results of simplified models using material data obtained from numerical homogenization are compared to the results of models with heterogeneous build-up. The results show that the Lamb wave propagation properties are mainly affected by the volume fraction and ratio of stiffness to density of particles, whereas the particle size does not affect the Lamb wave propagation in the considered range. As the contribution of the stiffer material increases, the group velocity and the wave length also increase while the energy transmission reduces. Simplified models based on homogenization technique enabled a tremendous drop in computational costs and show reasonable agreement in terms of group velocity and wave length.

• 出版日期2012-10