Part of the Applied Mathematical Sciences book series (AMS, volume 149)
The mechanism of the deformation pattern change of cylindrical soil specimens at the later stage has been presented in Chapter 12. In this chapter, we move on to investigate pattern formation at the earlier stage. Photo 13.1 displays:
of cylindrical sand and soil specimens observed at the early stage. In particular, the echelon mode denotes a series of oblique parallel short wrinkles arranged with similar intervals, as depicted at the bottom-right of Photo 13.1. Moreover, patterns appear ubiquitously for materials, as shown in Photos 13.2 and 13.3 for rock and steel, regardless of their shape and deformation size. The echelon mode can, for example, be found in various materials: soils (e.g., Ikeda, Murota, and Nakano, 1994 ), rocks (e.g., Pollard, Segal, and Delaney, 1982 ; Davis, 1984 ; Petit, 1988 ), and metals (e.g., Bai and Dodd, 1992 ; Duszek—Perzyna and Perzyna, 1993 ; Poirier, 1985 ).
a diamond pattern;
an oblique stripe pattern; and
an echelon mode
KeywordsIrreducible Representation Bifurcation Point Image Simulation Soil Specimen Cylindrical Domain
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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© Springer Science+Business Media New York 2002