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This document presents a dynamic model of a huge excavator used for surface mining. The excavator contains a rotating assembly mounted on a thrust ball bearing that is one of the most heavily loaded components. Signals recorded during testing captured modal information that was used to develop a simplified dynamic model. The model approximates the excavator as having four main subassemblies: a fixed base, a rotating tower on the thrust bearing, a support arm, and an elastic mast assembly. Lagrange

Author

Joseph Jose

Language

EN