Assessment of suspension damper failures on the dynamic response of a semi-trailer truck multibody system
Palavras-chave:
Suspension defects, Vehicle dynamics, Multibody model, Semi-trailer truck safetyResumo
This study investigates the dynamic behavior of commercial cargo vehicles, focusing on how suspension defects affect the performance and safety of semi-trailer trucks. It evaluates the impacts on handling and driver comfort—key factors for road safety and operational efficiency. A multibody dynamic model is used to simulate a semi-trailer truck subjected to ISO 8608:2016 road profiles and speeds, incorporating suspension failures such as shock absorber malfunction (zero damping). Acceleration power spectral density is applied to assess performance degradation, while the Vibration Dose Value (VDV) estimates potential health risks from prolonged vibration exposure. Results show that suspension defects significantly reduce vehicle stability and ride comfort, increasing driver fatigue and safety risks. Load variations also influence the vehicle’s dynamic response. These findings highlight the importance of preventive suspension maintenance to preserve vehicle dynamics and ensure occupational health. The study contributes to improving commercial vehicle safety standards by minimizing accident risks and enhancing long-haul driver well-being through better vibration control.
