This paper discusses an attempt to identify the chaotic behavior of the dynamic system of wind-wave characteristics including significant wave height, wave period and wave direction in southern, central and northern regions of the Caspian Sea. Surrogate data method and spectral analysis are utilized to detect the nonlinearity and aperiodicity of the time series. The delay embedding theorem of r...

Stress waves affect the stress field at crack tip and dominate dynamic propagation. Therefore, evaluating influence of blasting on propagation behavior mechanical characteristics is great significance for engineering blasting. In this study, ANSYS/LS-DYNA was used numerical simulation, in which distribution were closely observed. Moreover, ABAQUS applied simulating path calculating intensity fa...