The Dynamic Analysis Of Multi-axis Seven Freedom Degrees Vehicle Model On The Waveform Surface

With the continuous development of road transport,vehicles - road interaction coupling system are more and more attention. Pavement is a measure of the quality of roads,a key performance indicator,a good road can provide speediness,safety,comfort and ecomomy,and it can also reduce the damage of road.In the other way,what the roughness road can do is bring the coupling vibration. Automobile vibration of dynamic load, it will not only result in auto mechanical wear and tear, damage, affecting vehicle ride comfort, safety, but also on the mechanical behavior of pavement to accelerate the road damage.Through theoretical analysis and experimental data for reference, established sine wave road model, and determine the model of the wavelength and amplitude; reference vehicle research division of the theoretical analysis, consider the incentives around the seven degrees of freedom vehicle model phase, through a multi-degree of freedom system complex modal theory, using programming, calculating the left and right wheels, different incentives, different speed, different road model, the wavelength, the vehicle load while the dynamic quality of the size and distribution of load .Articles by seven degrees of freedom vehicle model calculation, the following conclusions: Vehicle Dynamic load in a given waveform with the road surface is proportional to the amplitude of the waveform; wave wavelength of the road, the quality of vehicle speed and load significantly on the dynamic load effects.