Análisis de la respuesta vibracional en una cabina de bus y sus efectos en el desempeño funcional del conductor : análisis de los niveles de vibración mecánica, los efectos en la salud y confort debido actividades de impacto de vehículo con una carga aleatoria.

Abstract

This study analyzes the vibrational response of a bus cabin prototype and its impact on the driver. Measurements under random loads were used on a suspension-less prototype, identifying natural vibration modes and validating a mathematical model through simulations and experimental measurements. A significant resonance was observed between 10 and 11 Hz in vibration modes 5 and 6. The maximum accelerations recorded were 1.3 m/s² on the steering wheel, 1.2 m/s² on the gear lever, 0.53 m/s² on the pedals, and 0.9 m/s² on the seat. According to the ISO 2631-1 standard, it was determined that the steering wheel causes significant discomfort, while the seat requires a more exhaustive evaluation according to Royal Decree 1311/2005. It is concluded that a preventive plan is necessary to reduce vibrations and ensure the driver's health.