Numerical two-scale simulations with application towards refractories

Abstract eng:
Numerical results of damage evolution are reported of thermoshock processes on refractory ceramics. Damage patterns have been generated using a two-scale approach for brittle materials, implemented in a finite element framework. For this purpose, so-called cell models are employed, incorporating either microcracks or cohesive grain boundaries on a microscopic level. The impact of these discontinuities on macroscopic material properties and damage evolution is determined with the help of homogenization techniques. Finally, the potential of the numerical tool is demonstrated by means of refractory bricks, being imposed by thermomechanical loading.

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