Crack propagation in solids and crack-surface roughness

Buddhapriya Chakrabarti and Bikas K. Chakrabarti

Physica A: Statistical Mechanics and its Applications, 1999, vol. 270, issue 1, 21-26

Abstract: It is seen from extensive computer simulation results and some experimental observations that for inhomogenous solids with moving cracks, the surface roughness exponent ζ crosses over from a low value ζ∼0.42 to a higher value ζ∼0.8, as the crack-tip velocity increases above a certain threshold. In this paper we extend a simple phenomenological model and a scaling analysis for the growth of crack surfaces in inhomogenous solids by introducing explicitly the effects of the stress rate. We find that the stress rate is indeed a relevant parameter and its consideration leads to a qualitative understanding of the phenomena described above.

Keywords: Crack propagation; Strain rate; Roughness; Heterogenous media (search for similar items in EconPapers)
Date: 1999
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:270:y:1999:i:1:p:21-26

DOI: 10.1016/S0378-4371(99)00129-6

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