摘要
The problem of elastic wave scattering from a partially debonded elastic cylindrical inclusion is investigated by using the wave function expansion method and singular integral equation technique. The debonding regions are modeled as interface cracks with non-contacting faces. The mixed boundary conditions of the problem lead to a set of simultanious dual series equations which, by introducing the dislocation density functions as unknowns, can be further converted to a set of singular integral equations of the second type. Solving these equations numerically, we obtain the dynamic stress intensity factor(DSIF), the scattered far-field pattern and the scattering cross section(SCS). The numerical results for an inclusion with one debond are presented to show the distinguishing feature of the problem-the low frequency resonances in both DSIF and SCS. Finally, as a special example, we discuss the scattering of elastic waves by a circular arc-shaped crack in a homogeneous medium. The presented method is valid when stresses have oscillatory behavior.
ＥｌａｓｔｉｃＷａｖｅＳｃａｔｔｅｒｉｎｇＦｒｏｍａＰａｒｔｉａｌｌｙＤｅｂｏｎｄｅｄＥｌａｓｔｉｃＣｙｌｉｎｄｒｉｃａｌＩｎｃｌｕｓｉｏｎＷＡＮＧＹｕｅｓｈｅｎｇＷＡＮＧＤｕｏ（汪越胜，王铎）（Ｄｅｐｔ．ｏｆＡｓｔｒｏｎａｕｔｉｃｓａｎｄＭｅｃｈａ...
