Abstract：
:A biofilm material model and a procedure for numerical integration are developed in this article. They enable calculation of a composite Young's modulus that varies in the biofilm and evolves with deformation. The biofilm-material model makes it possible to introduce a modeling example, produced by the Unified Multi-Component Cellular Automaton model, into the general-purpose finite-element code ABAQUS. Compressive, tensile, and shear loads are imposed, and the way the biofilm mechanical properties evolve is assessed. Results show that the local values of Young's modulus increase under compressive loading, since compression results in the voids "closing," thus making the material stiffer. For the opposite reason, biofilm stiffness decreases when tensile loads are imposed. Furthermore, the biofilm is more compliant in shear than in compression or tension due to the how the elastic shear modulus relates to Young's modulus.
journal_name
Math Bioscijournal_title
Mathematical biosciencesauthors
Laspidou CS,Spyrou LA,Aravas N,Rittmann BEdoi
10.1016/j.mbs.2014.02.007subject
Has Abstractpub_date
2014-05-01 00:00:00pages
11-5eissn
0025-5564issn
1879-3134pii
S0025-5564(14)00033-9journal_volume
251pub_type
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