Influence of Road Unevenness on Vehicle Response

Road unevenness is the main source of the vehicle kinematic excitation. Periodic repetitive unevenness is dangerous as it may cause resonant oscillation of certain parts of the vehicle. The article deals with numerical simulation of vehicle movement along periodically recurring cosine waves, so-called shutters. It follows the influence of the wavelength in relation to the distance of the wheels of the vehicle. It analyzes the vehicle response when driving at critical speeds. For selected cases it analyzes the kinematic values of characteristic points of vehicle model and the contact forces between the vehicle wheel and the runway.