A grafo-numeric method of determination of the operation power of the rotor of EsRc-1400 bucket wheel excavator using computer simulation in SolidWorksFlorin Dumitru Popescu, Sorin Mihai Radu, Andrei Andraş and Ildiko Kertész BrînaşMATEC Web Conf., 290 (2019) 04007DOI: https://doi.org/10.1051/matecconf/201929004007