Issue 49

Yu. Bayandin et alii, Frattura ed Integrità Strutturale, 49 (2019) 243-256; DOI: 10.3221/IGF-ESIS.49.24

initial material structure. As the consequence, the elastic decay dynamics could be sensitive to the qualitative different relaxation kinetics: exponential kinetics with characteristic times that are close to the acoustic times and intermittent “slow” relaxation leading to the power law plastic wave fronts.

10 1

A , GPa



Fe [2] Cu [2] Al [2] Al simulation [31] d  /dt~  A 4

10 0

10 5

10 6

10 7

d  /dt, s -1

Figure 8: Dependences of the stress amplitude versus the strain rate at the shock front for metals

10 1

A , GPa



MgO [2] SiO 2 [2] SiC simulation SiC experiment [15] d  /dt~  A 4

10 0

10 5

10 6

10 7

d  /dt, s -1

Figure 9: Dependences of the amplitude of stresses versus the strain rate at the front of the shock wave for nonmetals

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