The transition layer modelling is an actual problem that often occurs in the analysis or design of physical environments, which consist of two or more components. Examples of such environments are composites. In the heterogeneous environments models construction, depending on the selected level of detail, transition layers can be described as: separated units; simplified elements of regular structural units; and as random distribution of some different materials concentration of microlevel model elements. Models included in the last class are the most promising in terms of research, automation, and further practical usage, since give ability to most adequately describe the real physical and spatial structure of heterogeneous environments.