Torre Rodríguez, Jaime Arturo de laEspañol Garrigos, José2025-06-272025-06-270001-08-20J. A. de la Torre, Pep Español, Internal dissipation in the Dzhanibekov effect, European Journal of Mechanics - A/Solids, Volume 106, 2024, article 105298, ISSN 0997-7538, https://doi.org/10.1016/j.euromechsol.2024.1052980997-7538https://doi.org/10.1016/j.euromechsol.2024.105298https://hdl.handle.net/20.500.14468/26947This is a Submitted Manuscript of an article published by Elsevier in "European Journal of Mechanics - A/Solids, Volume 106, 2024", available at: https://doi.org/10.1016/j.euromechsol.2024.105298The Dzhanibekov effect is the phenomenon by which triaxial objects like a spinning wing bolt may continuously flip their rotational axis when initially spinning around the intermediate axis of inertia. This effect is closely related to the Tennis Racket theorem that establishes that the intermediate axis of inertia is unstable. Over time, however, dissipation ensures that a torque free spinning body will eventually rotate around its major axis, in a process called precession relaxation, which counteracts the Dzhanibekov effect. Euler’s equations for a rigid body effectively describe the Dzhanibekov effect, but cannot account for the precession relaxation effect. A dissipative generalization of Euler’s equations displays two dissipative mechanisms: orientational diffusion and viscoelasticity. Here we show through numerical simulations of the dissipative Euler’s equations that orientational diffusion, rather than viscoelasticity, primarily drives precession relaxation and effectively suppresses the Dzhanibekov effect.eninfo:eu-repo/semantics/openAccess25 Ciencias de la Tierra y del Espacio25 Ciencias de la Tierra y del Espacio::2507 Geofísica24 Ciencias de la Vida12 MatemáticasartículoDzhanibekov efectoRelación de precesiónViscoelasticidadEcuaciones de EulerdisipativeCuerpo cuasirigido