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http://dx.doi.org/10.5050/KSNVE.2011.21.10.897

Study of Apparent Mass and Apparent Eccentric Mass to Vertical Whole-body Vibration by Using Strain-gage Type Six-axis Force Plate  

Jeon, Gyeoung-Jin (부산대학교 대학원 기계공학부)
Kim, Min-Seok (현대중공업 제품개발연구소 건설장비연구실)
Ahn, Se-Jin (르노삼성자동차 품질해석팀)
Jeong, Weui-Bong (부산대학교 기계공학부)
Yoo, Wan-Suk (부산대학교 기계공학부)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.21, no.10, 2011 , pp. 897-904 More about this Journal
Abstract
When whole-body is exposed to vertical vibration, asymmetry shape of human body affects the response on the translational(fore-aft, lateral, vertical) and rotational(roll, pitch, yaw) motion. While the translational motion has been studied with various titles, it has been rare to study the rotational motion of human body exposed to vertical excitation because of lack of experimental equipment. This study was performed by using a 6-axis force plate installing strain gage type sensors for the rotational response. Sixteen male subjects were exposed to vertical vibration on rigid seat in order to investigate apparent mass of three translational motion and apparent eccentric mass of three rotational motion. Random signal was generated to make excitation vibration which was on an effective frequency range of 3~40 Hz, and magnitude of 0.224 m/$s^2$ r.m.s. The frequency range and magnitude used was selected for the vibration of passenger vehicle on idling condition. As the result, cross-axis apparent masses of fore-and-aft and lateral direction were not significant showing 20 % and 3 % of vertical apparent mass relatively. And apparent eccentric mass of pitch motion was dominant when compared to that of roll and yaw motion, which is reasoned by asymmetry direction of human body sitting on a seat.
Keywords
Whole-body Vibration; Apparent Mass; Cross-axis Apparent Mass; Apparent Eccentric Mass; Idle Vibration;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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