Wave Seminar Dispersion curves for guided waves in an elastic strip

2006-10-16 14:45 - 2006-10-16 16:15
Faculty of Science Building #3 Room 311
Hiroya Ito (The University of Electro-Communications)
We consider the propagation of guided waves in an elastic strip{(y,z): 0<z<1} with the fixed-fixed, fixed-free or free-free boudarycondition. Each guided wave is characterized by an eigenvalue k_n(p)and an associated eigenfunction f_n(p,z) of the operator L(p,D_z)reduced from the elastic operator L(D_y,D_z) using a partial Fouriertransform y -> p. We examine the `dispersion curves' k_n(p),especially their asymptotic behavior as p -> infinity, thoroughly inisotropic case and to some extent in anisotropic case.