| Dump truck has a propensity to roll over in certain situations. Variable soil conditions, high winds, significant ground slope, and shifting loads contribute to a high risk of rollover for dump trucks, In this study, a dynamic simulation model of a dump truck with triangle rod assembly lifting mechanism was established to study the dumping stability of the dump truck. Through the dynamic simulation of the dump truck model in several typical situations, the dynamic rollover threshold values were determined. This study is also a good attempt and research of using Virtual Prototyping Technology in vehicle design.This thesis comprehensively summarized the dumping stability of the dump truck, investigated the steady-state stability and the dumping stability of the dump truck, and also analyzed significant ground slope, shifting loads, the suspension and the tire of the dump truck on the rollover effects. Sub-models of the suspension, main and auxiliary frame and lifting mechanism were designed and assembled to be a whole dump truck model for dumping stability using Virtual Prototyping Technology. The dynamic simulation was conducted in two conditions and then the dynamic rollover threshold was determined. A dumping stability field test of the dump truck was also done and the rollover threshold was determined. The threshold value determined in simulation was verified by the results of the test and the whole virtual prototype of the dump truck was proven to be reasonable. It is the reference foundation of more study of dumping stability and the improvement of the dump truck. |
PDF Full Text Request