Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Estimation of Viscoelastic Properties of Trabecular Bone Using An Inverse Method

역추기법을 이용한 해면골의 점탄성 특성 해석

  • Kang, Shin-Ill (Department of Mechanical Design and Production Engineering, Yonsei University) ;
  • Lee, Won-Hee (Department of Mechanical Design and Production Engineering, Yonsei University) ;
  • Hong, Jung-Hwa (Technology Center, Samsung Motors Inc.)
  • 강신일 (연세대학교 공과대학 기계설계학과) ;
  • 이원희 (연세대학교 공과대학 기계설계학과) ;
  • 홍정화 (삼성자동차 기술연구소)
  • Published : 1997.09.01
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Abstract

An inverse method with regularization has been developed to determine the viscoelastic properties of trabecular bone. A series of stress relaxation experiments were performed under the condition of uniaxial compression stress state. Optimization has been formulated within the framework of nonlinear least-squares and a modified Gauss-Newton method with a zeroth-order regularization technique. The stress relaxation behavior of trabecular bone was analyzed using a standard viscoelastic model. The present study clearly shows that trabecular bone exhibits typical viscoelastic stress relaxation behavior, and the obtained material parameters well represent the viscoelastic behavior of trabecular bone.

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