The dynamic load decomposition technology of VPG based on Adams is widely applied in the field of passenger car durability performance development.For heavy truck,the application and promotion of VPG are limited due to the complexity of vehicle models,limited parameters,and high RLDA testing difficulty.The complete vehicle multi-body dynamics model of a tractor and virtual proving ground simulation environment are built based on Adams.The real vehicle load data acquisition of the proving ground events was carried out and compared with the dynamic loads extracted from dynamic simulation analysis of the virtual proving ground to verify the model accuracy and load accuracy.Relative pseudo damage ratio,RMS value ratio,and spectrum analysis were used to evaluate the differences between simulated and measured load data under typical road conditions such as Belgium,twisted roads,and washboard roads.It is proved that The dynamic load extraction technology based on virtual proving ground can be applied to tractor models and achieve high accuracy,which is an effective method for obtaining the load data of proving ground durability events.
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