Some recent advances of shock wave physics research at the Laboratory for Shock Wave and Detonation Physics Research

摘要: Progress made in recent years on three topics that have been investigated at the Laboratory for Shock Wave and Detonation Physics Research are presented this report. (1) A new equation of state (EOS) has derived which can be used from a standard to predict variable change along an isobaric path. Good agreements between calculations some representative metals using EOS experiments found, covering wide range hundreds MPa GPa ambient temperature tens thousands GPa. (2) An empirical relation Y/G = constant (Y is yield strength, G shear modulus) HT–HP reinvestigated confirmed by shock wave experiment. 93W alloy was chosen as model material. The advantage it beneficial formulate kind simplified constitutive metallic solids under loading, thus faithfully describe behaviours shocked through hydrodynamic simulations. (3) attempt microstructure characterization failure glass carried out first time. Analyses both fractal dimension cracks' propagating path degree damage failed region qualitatively revealed ZF1 much less damaged structure than K9 nearly same loading stress. Based above analysis, we conjecture inhomogeneous immiscible phases, more ZF1, distributed body intrinsic factor, exhibiting numerous locally strained spots due induced different compressibilities matrix phases. When surface cracks, activated shearing action one-dimensional strain propagate arrive spot boundaries, cracks would generated, accompanied crack turning branching, cause fracturing fragmenting. In other words, are, severely glass.