Multiscale methods are developed for carbon-carbon composite design, the stress-strain boundary value problems were computed by nano-, micro-, mid- and macroscale heterogeneous levels on mechanical base and atomscale lattice analysis on physical base. Multiscale realisation makes use of the computer-aided triangulation algorithms by stochastic structure simulation, the finite element method by heterogeneous stress-strain analyses, the averaging procedures by effective current module obtaining and the parametric spline approximate by probability failure criteria formulation. The mechanical behaviour of carbon-carbon composite on the each scale level has been terminated by four-order tensors by effective stiffness and damage functions. The results of multiscale modelling favoured the view that all scale heterogeneity exert some action on the mechanical properties of carbon-carbon composite structures.
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