Are bingham plastics always heterogenous mixtures, like mud, or are there known compounds?
'Atypical' applications of Bingham like material models (other than mud that is) have come across are continuum damage mechanics analyses (Bingham matrix), in which the mixture is in a sense heterogeneous, but in another not (inclusions etc. stuff in a viscoplastic metallic matrix). A related application is that of 'simple' viscoplasticity, where think the material models of Bingham kind have at least some merit (meaning in 'traditional' materials as well).
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