Publications / 2022 Proceedings of the 39th ISARC, Bogotá, Colombia
Mobile drilling rigs are particularly susceptible to over-turning due to the high location of their centre of mass. In some cases, overturning occurs due to a failure in the subsoil. Until now, machine operators are solely responsible for mon-itoring the machines' stability, and assessment of dangerous conditions is based mainly on experience. This investiga-tion aims to set the grounds for elaborating a digital twin to online monitor the machine's stability to prevent overturn-ing. Stress transmitted to the ground, tracks' settlement, and bearing capacity are calculated from a multibody simulation (MBS) and following existing standards. Furthermore, soil-dependent stability diagrams are generated to describe the stable location of the machine's centre of mass and predict soil failure. Results offer the possibility to function as an online alarm system running parallel to the machine's oper-ation and alerting the operator about dangerous conditions.