Numerical Solution of Hard Rock Disintegration
نویسنده
چکیده
This paper focuses on a numerical analysis of a hard rock (ore) disintegration process. A bit moves into the ore and subsequently disintegrates it. The disintegration (i.e. fracture of ore) is solved via a deterministic approach (FEM) and a probabilistic approach (FEM in combination with the SBRA Simulation-Based Reliability Assessment method, i.e. Monte Carlo simulations, stochastic inputs). The ore is disintegrated by deactivating the finite elements satisfying fracture conditions. The results are compared with experiments. The application of the SBRA method is a new and innovative trend in this area. Finally, the probabilistic reliability assessment is mentioned. Abstrakt Článek se zaměřuje na numerickou analýzu procesu rozpojování tvrdých hornin (rud). Nůž se pohybuje do horniny a následně ji rozpojuje. Rozpojování (tj. lom rudy) je řešeno deterministickým přístupem (MKP) a pravděpodobnostním přístupem (MKP v kombinaci s metodou SBRA Simulation-Based Reliability Assessment, tj. simulace Monte Carlo, stochastické vstupy). Ruda je rozpojována pomocí deaktivace konečných prvků, které splňují podmínky odlomení. Výsledky jsou porovnány s experimenty. Aplikace metody SBRA v této oblasti je novým a inovativním trendem. V závěru je uveden pravděpodobnostní posudek spolehlivosti.
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