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This paper concerns the fracture mechanics problem for elastic cracked materials under transient dynamic loading. The nonlinear contact problem for a linear crack under normal impact loading is solved by the boundary integral equations in the frequency domain and the components of the solution are presented by the Fourier exponential series. The algorithm convergence is proved and the solution is obtained for different friction coefficients. The dynamic stress intensity factors are computed for different stress pulses and compared with those obtained neglecting the crack closure and friction. [ABSTRACT FROM AUTHOR]

Abstract: This paper concerns fracture dynamics problems for elastic cracked solids with allowance for the crack faces contact interaction. The problem for a linear crack under an oblique time-harmonic wave is solved by the method of boundary integral equations. The effect of friction, governed by the Coulomb friction law, is incorporated into the analysis. The results are obtained for various values of the angle of the wave incidence, the wave frequency and the friction coefficient. They are compared with those obtained without allowance for the crack faces contact interaction. [Copyright &y& Elsevier]