Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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A Musculoskeletal Model of a Human Lower Extremity and Estimation of Muscle Forces while Rising from a Seated Position

인체 하지부 근골격계 모델 및 의자에서 일어서는 동작 시 근력 예측

  • 조영남 (한양대학교 기계공학과) ;
  • 유홍희 (한양대학교 기계공학과)
  • Received : 2011.12.27
  • Accepted : 2012.05.16
  • Published : 2012.06.20
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Abstract

An analytical model for a human body is important to predict muscle and joint forces. Because it is difficult to estimate muscle or joint forces from a human body, the objective of this study is the development of a reliable analytical model for a human body to evaluate the lower extremity muscle and joint forces. The musculoskeletal system of the human lower extremity is modeled as a multibody system employing the Hill-type muscle model. Muscle forces are determined to minimize energy consumption, and we assume that motion is constrained in the sagittal plane. Muscle forces are calculated through an equilibrium analysis while rising from a seated position. The musculoskeletal model consists of four segments. Each segment is a rigid body and connected by frictionless revolute joints. Muscles of the lower extremity are simplified to seven muscles with those that are not related to the sagittal plane motion are ignored. Muscles that play a similar role are combined together. The results of the present study are compared with experimental results to validate the lower extremity model and the assumptions of the present study.

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References

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