Browse Publications Technical Papers 2018-28-0058

Optimization of Propeller Shaft Vibrations in Truck Segment through Physical and Virtual Simulations 2018-28-0058

Smooth running and better drivability are major concerns while driving for rounds up trip in transportation by trucking in India, such requirement has been fulfill by this paper presents an optimization methodology and theoretical analysis of driveshaft vibration frequency in LMD segment and easy selection of propeller shaft series. Experiment analysis was done to correlate theoretical calculations with 4 cylinder engine having 100 ~ 150 HP, six speed manual transmission and Spiral design of crown wheel rear axle .This experiment was carried out to achieve good performance in terms of drivability, smooth functionality and uninterrupted drive along with lowest vibrational frequency at high speed with controlled critical RPM .The propeller shaft series series selection and refinement done using theoretical iteration with operating angle , beta equivalent angle and performance prediction sheet has been developed. Thus, for a range of vibration analysis done at different propeller shaft layout design. Performance predictions for vehicles with the designed were rigorously done and required parameters were recorded, compared and plotted on the graph. Low vibration is more vital role generally offered in 4 X2 Vehicle, in which the engine is tuned for maximum power in a narrow range of operating speeds and the driver or rider can be expected to shift often to keep the engine in its power band. Lowest operating angle of drive shaft design leads to better overall vehicle performance. Effective selection of drive shaft layout is done by iterations on angle parameters .Thus the selected parameters were input into actual driveline layout design to make it more realistic at low vibrational amplitude. In this study, we carried out theoretical calculation based analysis in terms of beta angle which will have measurable effect on the vehicle drivability and dynamic behavior. A five speed and a six speed manual transmission and rear wheel drive is considered for this test. The data is obtained by number of iteration done on vehicle validation as per duty cycle and B10 life. Thus the concept of Optimization of propeller shaft Vibration analysis by theoretical evaluation is defined, validated and refined in this paper


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