Research and Application of Vehicle Dynamic Interference Method

Body dynamic interference is one of the common phenomena in the process of vehicle road tests. It is easy to cause sensitive and disgusting problems such as knock off paint, friction deformation, noise and so on. Based on the principle of direct method, this paper studies the theory of multi degree of freedom forced vibration, the algorithm and process of time-domain transient response analysis, and puts forward a dynamic interference method for vehicle body, which adopts the self-developed DIA (dynamic interference) method. The load input, modeling analysis, diagnosis and optimization of the system are carried out, and the system is applied to the trunk lid system to identify and optimize the problem more accurately. This method can be extended to the prediction of dynamic interference among vehicle, subsystem and parts.