Phys. Rev. E 77, 061501 (2008) [17 pages]Continuum theory of memory effect in crack patterns of drying pastesReceived 14 September 2007; published 3 June 2008 A possible clarification of memory effect observed in crack patterns of drying pastes [ A. Nakahara and Y. Matsuo J. Phys. Soc. Jpn. 74 1362 (2005)] is presented in terms of a macroscopic elastoplastic model of isotropic pastes. We study flows driven by steady gravitational force instead of external oscillation. The model predicts creation of residual tension in favor of cracks perpendicular to the flow direction, thus causing the same type of memory effect as that reported by Nakahara and Matsuo for oscillated CaCO3 pastes. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevE.77.061501
DOI:
10.1103/PhysRevE.77.061501
PACS:
83.10.Ff, 83.60.La, 61.20.Lc, 83.60.Hc
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