A PARAMETRIC STUDY OF BI-MATERIAL BOND RESPONSE TO WAVE EXCITATION

The response of imperfect planar bi-material bonds to wave excitation is considered in the time domain. Two semi-infinite linear elastic hom ogeneous solids are bonded together to form an imperfect bond which is modelled as a continuous distribution of infinitesimal nonlinear spri ngs. At the macrolevel, the springs are characterized by average nonli near and damping parameters. For oblique wave incidence the response i s given as the solution to a nonlinear first order ordinary differenti al equation. A parametric study is performed for different wave pulses , angles of incidence, elastic solids, and nonlinear models. An analyt ical solution is also presented for small nonlinearities.