Browse Publications Technical Papers 2001-01-0384
2001-03-05

Dynamic Ride Quality Investigation and DB of Ride Values for Passenger and RV Cars 2001-01-0384

The ride values of seven cars(six passenger car and one RV car) are evaluated for 4 subjects based on the vibration of the bodies. And the seat qualities are investigated with the SEAT(seat effective amplitude transmissibility) value. The evaluated values are arranged as DB in html files. Since one of the most important parameters for ride comfort is the level and duration of the root mean square acceleration experienced, the acceleration responses of subjects are measured at 8 points on their bodies(3 Translational axes on the seat surface, 3 translational axes at the feet and 2 axes(x,z) at the backrest) when the subjects are excited by driving a vehicle on the road. The ride values such as the overall ride value, the component ride values and the seat effective amplitude transmissibility based on acceleration root mean square are evaluated for different seven vehicles using frequency weighting functions and axis multiplying factors. The posture of the subject is important for measuring the human vibration. The change in posture may alter the human response. So the ride values according to the variation of seating posture(the angle of backrest) are evaluated. The ride quality according to the driving velocity are also studied.

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