System Dynamics and Ride Quality Assessment of Automobile

Lin, Ken Yuan; Hwang, Jiun Ren; Chang, Shun Hui; Fung, Chin Ping; Chang, Jung Ming

doi:10.4271/2006-01-1225

Cited by 9 publications

(8 citation statements)

References 6 publications

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“…This was because the velocity affected the higher frequency more than the lower frequency and the seat easily damps the high frequency vibration. At Lin et al 2006, the subjects felt uncomfortable when the driving speed reaches 60km/h comparing with lower speed 30~40km/h. The SEAT value is affected by the so many factors.…”

Section: Discussionmentioning

confidence: 97%

“…The present finding was supported by the previous findings. Lin et al 2006 observed that, where the asphalt uneven road surface had the worst ride quality and the long wave road surface had the best one. Fouladi et al 2011 found that seat vibration will have more contribution from bumpy road comparing with smooth road.…”

Section: Discussionmentioning

confidence: 98%

“…The ride comfort plays an important role in the vehicle design. The vibration is one of the principal components associated with ride comfort (Reed et al, 1991;Park et al, 1997Park et al, , 1998aPark et al, , 2001Paddan and Griffin, 2002;Nahvi et al, 2009;Lin et al, 2006). Vibration transmitted to the buttocks and back of the occupant along the vertebral axis via the base and back of the seat has a large influence on comfort, performance, and health; in particular the whole-body vibration plays an important role in it (Griffin, 1990(Griffin, , 1998.…”

Section: Introductionmentioning

confidence: 99%

“…The ride quality is inherently a subjective measure and the perceived comfort levels are different for people even with the same stimulus . To improve the ride quality, past studies were attempted to identify the factors contributing to the ride quality and to match the ride quality with the subjective feeling (Griffin, 1990;Parsons and Griffin, 1983;Pardko and Lee, 1966;Reed et al, 1991;Wambold, 1986;Valasek et al, 2008;Lin et al, 2006). Few studies were measured the vehicles ride qualities using the ride value (Wambold, 1986;Park et al, , 2001Kim et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

“…The major components contributing to the ride quality of the vehicle are the tire, suspension, road conditions and seat. The optimization schemes have been developed to increase the ride quality with such design variables as the tire, suspension, and seat property (Berger and Gilmore, 1993;Amirouche et al, 1994;Nahvi et al, 2009;Lin et al, 2006). The important design considerations in the car seat development are human health (Kelsey, 1975;McLain and Weinstein, 1994;Necking et al, 1992;Troup, 1978) and comfort (Dupius and Zerlett, 1986;Griffin, 1990;Park et al, 1997Park et al, , 1998a.…”

Section: Introductionmentioning

confidence: 99%

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Ride Quality Investigation of Passenger Cars on Different Road Conditions

Park¹,

Subramaniyam²

2013

Journal of the Ergonomics Society of Korea

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Objective: The ride qualities of the six passenger cars were evaluated in 4 subjects on the highway and uneven road. The relation between vibration with driving velocity and driving posture were also investigated separately. Background: Ride comfort plays an important role in the vehicle design. Vibration is the one of the principal components associated with ride comfort. Method: The acceleration of the foot, hip and back were measured using B&K accelerometers in this study. The velocity of the passenger cars was maintained at a constant speed of 80km/h on the highway and 40km/h on the uneven road. For evaluating the effects of driving velocity and driving posture on vehicle's vibration level, separate experiments were performed on the highway with 5 different vehicle speeds and 5 different backrest angles, respectively. Results: The overall ride value of the luxury car showed the best result while the smaller car showed the worst value on the highway. On the uneven road the overall ride value level was increased 75~98%. All the vehicles had the SEAT value less than 1. Faster the velocity lowers the SEAT value. The ride quality in terms of vibration gets worst when the backrest angle increased. Conclusion: The smaller car had a first mode at the higher frequency and showed higher vibration level. SEAT value was mostly affected by the seat property not by vehicle. We ranked the luxury car seat had a best vibration reduction quality than others based on SEAT values. When the driving velocity increased, the overall ride values were increased proportionally and the SEAT values were somewhat decreased. Application: Evaluation of whole-body vibration in the passenger car.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 98%