Journal of the Ergonomics Society of Korea (대한인간공학회지)

Ergonomics Society of Korea (대한인간공학회)
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A Study of Mathematical Human Modeling of Sitting Crew during Whole-body Vibration

해상 근무 승무원의 수학적 전신진동 해석 모델에 관한 연구

  • 김희석 (한국해양연구원 해양시스템안전연구소) ;
  • 김홍태 (한국해양연구원 해양시스템안전연구소) ;
  • 박진형 (한국해양연구원 해양시스템안전연구소)
  • Published : 2003.02.28
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Abstract

The resonance behaviour needs be understood to identify the mechanisms responsible for the dynamic characteristics of human body, to allow for the non-linearity when predicting the influence of seating dynamics, and to predict the adverse effects caused by various magnitudes of vibration. However, there are currently no known studies on the effect of vibration magnitude on the transmissibility to thoracic or lumbar spine of the seated person, despite low back pain(LBP) being the most common ailment associated with whole-body vibration. The objective of this paper is to develop a proper mathematical human model for LBP and musculoskeletal injury of the crew in a maritime vehicle. In this study, 7 degree-of-freedom including 2 non-rigid mass representing wobbling visceral and intestine mass, is proposed. Also, when compared with previously published experimental results, the model response was found to be well-matching. When exposed to various of vertical vibration, the human model shows appreciable non-linearity in its biodynamic responses. The relationships of resonance for LBP and musculoskeletal injury during whole-body vibration are also explained.

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References

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