Interface behavior of a bimaterial plate under dynamic loading

The paper deals with interface behavior of bimaterial ceramic-metal composites under dynamic time-harmonic load, The first plate is precracked with a normal crack touching the interface between the plates. It is assumed that the respective restriction for the ratio of energy release rates of the plates allowing the occurrence of an interface single delamination before the initiation of the normal crack in the second plate is satisfied. The growth of interface delamination is not considered. The used approximate shear- lag dynamic approach gives a possibility to obtain solutions in a closed form for axial and shear stresses of the structure. At an elastic- brittle interface behavior theoretical predictions for single debond length of two bimaterial structures are calculated. The parametric analysis reveals the sensitivity of the interface single debond length and shear stress to the type of bimaterial structure and to the characteristics of the dynamic load--in particular its frequency and amplitude. All results are illustrated in figures and tables and are discussed, DOI: 10.1061/(ASCE)EM.1943-7889.0000155 CE Database subject headings: Cracking; Shear lag; Bonding; Delaminating; Plates; Dynamic loads, Author keywords: Dynamics of bimaterial cracked plate; Shear lag model; Interface elastic-brittle delamination; Single debond length.