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The crushing energy in mineral processing industry is usually determined by experimental Bond’s index regardless mechanical parameters of rocks. Bond’s index is a comminution parameter which was defined by Bond. In this study, with the purpose of correlating the strain energy of rock to the corresponding energy estimated by Bond’s index, cubic Granite specimens are simulated between two rigid jaws and are broken due to movement one of the jaws against the other. The specimens are modeled as elasto-plastic me...