Plane wave propagation in exponentially graded non-local couple stress solid media under initial stress

The study investigates wave propagation in functionally graded nonlocal micropolar elastic media under initial stress. It is found that there are two waves, namely quasi-P and quasi-SV waves. The reflection and refraction coefficients are calculated numerically in form of matrix. Numerical results are carried out to illustrate the reflection and reflection waves against angle of incidence with the help of MATLAB® graphical routines for different values of initial stress parameter. It is observed that derived equations for quasi-P and quasi-SV waves are affected by nonlocal, gradient and initial stress parameters.