| 不同扭矩作用下腰椎有限元模型分析 |
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| 引用本文： | 毕胜,张德文,张明.不同扭矩作用下腰椎有限元模型分析[J].医用生物力学,2002,17(1):20-23. |
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| 作者姓名： | 毕胜 张德文 张明 |
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| 作者单位： | 解放军总医院康复医学科;香港理工大学复康科技中心;香港理工大学复康科技中心 |
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| 摘 要： | 应用有限元方法研究扭矩作用下腰椎内部结构的应力变化。用ABAQUS6.1有限元软件建立腰椎L4-5有限元模型。对模型加载不同的扭矩。结果为随着作用扭矩的增大以及旋转角度的加大,作用在小关节上的力量也加大。椎间盘内轴向有效应力加大,髓核内压力,纤维环的应力和应变增加。
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| 关 键 词： | 扭矩 腰椎 有限元 |
THE STUDY OF FINITE ELEMENT MODEL FOR LUMBAR VERTEBRAE IN TORSION |
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| BI Sheng,ZHANG De-wen and ZHANG Ming.THE STUDY OF FINITE ELEMENT MODEL FOR LUMBAR VERTEBRAE IN TORSION[J].Journal of Medical Biomechanics,2002,17(1):20-23. |
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| Authors: | BI Sheng ZHANG De-wen and ZHANG Ming |
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| Abstract: | To investigate the stress changes of lumbar vertebrae internal structure in torsion by using a finite element mod-el.The three-dimensional finite element model of an intact L 4 -L 5 lumbar motion segment was established and loaded under different force of torsion.The results showed that the rotation degrees of L 4 -L 5 segment,average axial effective stress of intervertebral disc,pore pressure,fiber stress and strain and facet load increased with the increase of torsion. |
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| Keywords: | torsion lumbar vertebrae finite element model |
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