Analysis of different material theories used in a FE model of a lumbar segment motion

• Autorzy: Gohari E. , Nikkhoo M. , Haghpanahi M. , Parnianpour M.
• Języki publikacji: EN

Abstrakty

EN

In this study, a nonlinear poroelastic model of intervertebral disc as an infrastructure was developed. Moreover, a new element was defined consisting a disc (Viscoelastic Euler Beam Element) and a vertebra (Rigid Link) as a unit element. Using the new element, three different viscoelastic finite element models were prepared for lumbar motion segment (L4/L5). Prolonged loading (short-term and longterm creep) and cyclic loading were applied to the models and the results were compared with results of in vivo tests. Simplification of the models by using the new element leads to reduction of the runtime of the models in dynamic analyses to few minutes without losing the accuracy in the results.

Słowa kluczowe

EN

creep; dynamic loading; finite element method; lumbar motion segment; poroelastic; viscoelastic

PL

pełzanie; porosprężystość; lepkosprężystość; metoda elementów skończonych

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Acta of Bioengineering and Biomechanics
• Rocznik: 2013
• Tom: Vol. 15, no. 2
• Strony: 33--41
• Opis fizyczny: Bibliogr. 26 poz., rys., tab., wykr.

Twórcy

autor

Gohari E.

• Ph.D. Student, Department of Bioengineering, Science and Research Branch, Islamic Azad University (IAU), Tehran, Iran

autor

Nikkhoo M.

• School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran
• Institute of Biomedical Engineering, National Taiwan University, Taipei, Taiwan

autor

Haghpanahi M.

• School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran

autor

Parnianpour M.

• School of Mechanical Engineering, Sharif University of Technology, Tehran, Iran
• Industrial and Management Engineering Department, Hanyang University, Ansan, South Korea

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