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Ageing and Rheology in Soft Materials | | S. M. Fielding
; P. Sollich
; M. E. Cates
; | | Date: |
7 Jul 1999 | | Journal: | Journal of Rheology 44 (2000) 323-369. DOI: 10.1122/1.551088 | | Subject: | Soft Condensed Matter; Disordered Systems and Neural Networks; Statistical Mechanics | cond-mat.soft cond-mat.dis-nn cond-mat.stat-mech | | Abstract: | We study theoretically the role of ageing in the rheology of soft materials. We define several generalized rheological response functions suited to ageing samples (in which time translation invariance is lost). These are then used to study ageing effects within a simple scalar model (the "soft glassy rheology" or SGR model) whose constitutive equations relate shear stress to shear strain among a set of elastic elements, with distributed yield thresholds, undergoing activated dynamics governed by a "noise temperature", $x$. (Between yields, each element follows affinely the applied shear.) For $1 | | Source: | arXiv, cond-mat/9907101 | | Services: | Forum | Review | PDF | Favorites | |
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