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Monday, November 1, 2010

Prediction of wheeled tractor vehicle vibration

Tractor vibration problems affecting their driving comfort, handling and stability of important factors. Research on the Vibration of the tractors are tractors vehicle dynamics research, which is the current international and domestic tractor industry concerns. Taking a tractor vehicle for the study, combined with simulation of tractor vibration test method conducted a comprehensive analysis. Vibration analysis of the tractor vehicle, the key factor is the establishment of an effective and accurate model, this paper analyzes the domestic and foreign research results, establishment of three-dimensional mapping software UG5.0 geometric model of the tractor vehicle, re-use finite element analysis software ANSYS finite element model to establish the vehicle.This established a solid element, shell element, beam elements, the quality of unit and spring elements as the basic unit of the tractor vehicle finite element model based on this model, the first constraint for the vehicle modal analysis, Tractors and vibration natural frequency; Secondly, on the basis of modal analysis for the engine excitation harmonic response analysis, the seat at the floor and the steering wheel at the other at the displacement response spectrum; the last vehicle on the road for Roughness The transient response analysis to examine various parts of the vibration of the vehicle, and the basis of these results on the dynamic performance of the tractor to do the appropriate analysis and evaluation. We also use the vibration test system was comfortable road test, the vibration of the tractor vehicle comfort of a quantitative analysis. 

Key words: vibration, modal analysis, harmonic analysis, transient response analysis, vibration comfort

 

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