Effect of uniaxial initial stresses, piezoelectricity and third order elastic constants on the near-surface waves in a stratified half-plane
1Department of Mechanical Engineering, Yildiz Technical University, Istanbul, Turkey
2Department of Mechanical Engineering, Yildiz Technical University, Istanbul, Turkey; Ins. Math.& Mech. Nat. Acad. Science of Azerbaijan, Baku
2Department of Mechanical Engineering, Yildiz Technical University, Istanbul, Turkey; Ins. Math.& Mech. Nat. Acad. Science of Azerbaijan, Baku
J Ther Eng 2017; 3(4): 1346-1357
Abstract
Dispersion curves of a system consisting of a piezoelectric covering layer and metal half-plane under the uniaxial initial stresses perpendicular to the wave propagation direction are obtained within the scope of the Threedimensional Linearized Theory of Elastic Waves in Initially Stressed Bodies. The elasticity relations of the metal half-plane material are described by the Murnaghan potential. The numerical results are discussed for PZT-2 covering layer and aluminum half-plane material. The influence of the initial stresses, the piezoelectricity of the covering layer, and the third order elastic constants on the near-surface wave propagation velocity is illustrated.
Keywords: Uniaxial Initial Stress, Dispersion, Near-Surface Waves, Piezoelectric, Third Order Elastic Constants
