대한의용생체공학회:의공학회지 (Journal of Biomedical Engineering Research)
- 제18권3호
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- Pages.211-216
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- 1997
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- 1229-0807(pISSN)
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- 2288-9396(eISSN)
역추기법을 이용한 해면골의 점탄성 특성 해석
Estimation of Viscoelastic Properties of Trabecular Bone Using An Inverse Method
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Kang, Shin-Ill
(Department of Mechanical Design and Production Engineering, Yonsei University) ;
- Lee, Won-Hee (Department of Mechanical Design and Production Engineering, Yonsei University) ;
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Hong, Jung-Hwa
(Technology Center, Samsung Motors Inc.)
- 발행 : 1997.09.01
초록
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.