Fracture Failure Bodies of Porous Concrete (foam-like), Normal Concrete, Ultra-High-Performance-Concrete and of the Lamella -generated on basis of Cuntze’s Failure-Mode-Concept (FMC)

So-called fracture (failure) bodies are required to perform designing. The surface of such a fracture body of brittle behaving materialsis determined by the points of all those stress states that lead to fracture. In this paper the basic ideas of the underlying theory, Cuntze’s Failure-Mode-Concept (FMC), are briefly presented. Then, the FMC-based strength criteria for a large variety ofisotropic construction materials such asporous Concrete Stone, Normal Concrete, UHPC and for the transversely-isotropic carbon fiber-reinforced polymer Lamella are enlisted. Available multi-axial fracture test data were mapped to validate the generated fracture failure models. Eventually, for these materials fracture bodies and distinct cross–section of them, principal stress planes, octahedral stress planes and meridian planes, are displayed.

by Prof. Dr. Ralf Cuntze