The Simulation Analysis And Testing Research On Concrete Mixer Truck Driving Smooth

Driving smooth of vehicles has become an important index of evaluationvehicles, based on the software ADAMS as a platform, with the concrete mixingtransporter as the object of research, this paper is the study about the concretemixer truck on driving smooth.This paper investigates the concrete mixer truck driving smooth mainly fromtwo aspects: the simulation analysis based on ADAMS and the experimentalanalysis based on tests, the main contents of the study are as follows:In the paper a vehicle multi-rigid-body dynamics model is utilized, and themodel is verified by experiments. The multi-rigid-body modeling process onmain frame, vice frame is studied firstly, and modal analysis are did on thedynamic model, the results indicate that the dynamical modal analysis results ofmain frame, vice frame and the modal analysis results are consistent. Then, onthe vehicle dynamic modeling of the main parameters identification, dynamicsmodeling is did for the primary connection links. and is incorporated with themodel of main frame, vice frame to establish the vehicle dynamic model. The accuracy of vehicle dynamics model is showed through vertical vibration naturalfrequency from the experiment and the vibration size trend of the main points.The vehicle vibration modal analysis, transfer function analysis and frequencyresponse analysis are did on the vehicle dynamics model of the concrete mixertruck. The modal analysis determine the vehicle resonance modal frequenciesand modal shape, the analysis of the transfer function and frequency responseshows that the vehicle resonance comes from the driving source that is producedbetween ground and wheelsThe sensitivity analysis is did on the kinetic parameter that affected to the cab,the results show that Former engine-mount rigidity coefficient, afterengine-mount rigidity coefficient, former engine-mount damping coefficient,main shock absorber’s damping coefficient, former leaf-spring vertical rigiditycoefficient, cabin engine-mount damping coefficient are the key kineticparameters that influence to cab vibration. After taking the key dynamicparameters combinatorial optimization analysis,the kinetic parameters areoptimized.In the paper, much of the analysis work is did on model validation, the test of key kinetic parameters of concrete mixer truck.It is showed that the vehiclekinetic parameters for the accuracy of vehicle dynamics simulation, laid thefoundation for The vehicle dynamics simulation; Test results showed clearlythat after optimizing and improving the key of dynamic parameters of concretemixer truck,cab vibration acceleration drastically reduced, vehicle resonancephenomenon got obviously improved.