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http://dx.doi.org/10.7467/KSAE.2013.21.6.195

Evaluation of Vehicle Body Stiffness by Measuring Local Vibration  

Lee, Kyung Tae (Department of Mechanical Engineering, Graduate School, Kongju National University)
Jun, Yong Du (Division of Mechanical & Automotive Engineering, Kongju National University)
Choi, Doo Seuk (Division of Mechanical & Automotive Engineering, Kongju National University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.21, no.6, 2013 , pp. 195-200 More about this Journal
Abstract
Road loads data are indispensable in the evaluation of BSR (Buzz, Squeak, and Rattle) of automotive parts/modules. However, there are uncertainties on the best measurement locations for representative body motion and for seat systems. In the present study, we measure road loads at four different locations of a body. A-pillars on the driver and passenger sides and left and right frame fronts of the front passenger seat mountings are selected to study the acceleration behavior at different locations. The measurements are conducted with passenger cars driving local roads at 50km/hr. The measured time-acceleration data are then transformed into PSD (power spectral density) data to compare the characteristics of local accelerations. By defining the deviated acceleration components from rigid body motion, the stiffness of vehicle body could be simply expressed in a quantitative basis. Measured data from two different vehicles are presented to demonstrate their relative vehicle body stiffness.
Keywords
Road test; BSR(Buzz, Squeak, Rattle); PSD(Power Spectral Density); Vibration; RMS;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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