Multi-scale model of steady-wave shock in medium with relaxation

Indeitsev, D. A.; Meshcheryakov, Yu. I.; Kuchmin, A. Yu.; Vavilov, D. S.

doi:10.1007/s00707-014-1231-0

Cited by 10 publications

(1 citation statement)

References 18 publications

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“…Shockwave experiments and theoretical analysis of the shockwave behavior of a structurally non-homogeneous environment have revealed the following correlation between the variation of the mass velocity of the dynamically deformed medium D (the square root of the velocity dispersion D 2 or standard velocity deviation) and the deformation rate dε dt [1]:…”

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confidence: 99%

Micro-mechanismof multiscale dynamic fracture

Divakov

Zhigacheva

et al. 2022

Technical Physics Letters

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The shock propagation in non-uniform medium is studied theoretically and experimentally. A set of experiments on shock loading of high-strength low-alloyed AB2 steel is performed. The "trigger" mechanism for switching the dynamic fracture from one scale to another is shown to be the resonance interaction of plastic flow oscillations and mesoscopic structural elements. There is a threshold strain rate at which the defect (decrease) of mass velocity at the plateau of compressive pulse increases abruptly. Under strain rates higher threshold value, a multitude of short transcrystalline cracks is formed, which results in decay of shock wave. Keywords: Shock loading, multiscale fracture, transcrystalline cracks.

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confidence: 99%