Study On Impact Created By Runout After Welding On The Initial Imbalance Of Propshaft

With the development of automobile industry,the consumers become more restrict on the NVH performance of the vehicles.So even though the OEMs are busy with occupying the sales market,they still keep a much higher standard on the supplied components to satisfy the demand from the customers.Accordingly,the OEMs also pay a lot attention on the SUVs and some premium carlines as these are the most popular vehicles currently.As propshaft for instance,the high imbalance requirement has kept the traditional suppliers away from this field.But even the biggest suppliers,they have to be more focus on the production technology,though the special construction has been adapted to the construction design.This article is mainly focus on study of runout after friction welding.To summarize the impact on initial imbalance basing on runout with different positions,magnitudes and phases.A more reasonable runout control limit is defined to ensure the performance of the propshaft and reduce the scrap rate due to oversize of the initial imbalance.The article shows the complete concept to achieve the study of impact from runout on the initial imbalance.The contents are mainly consisting of the following parts: create the model to reflect the relationship between runout and initial imbalance;to run the simulation for balancing by ADAMS,considering combination with different positions,magnitudes and phases,and finally calculate a reasonable limit for the runout control;to run the DOE validation test for the conclusion.What need to be concerned is the flexible coupling of the propshaft,because it cannot be calculated easily by ADAMS software.So some other simulation software need to be used like Abaqus to create the MNF document first to prepare for the simulation with ADAMS accordingly.