| 利用修正QLV方程评估人体颈椎韧带阻尼特性 |
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| 引用本文： | 周久光.利用修正QLV方程评估人体颈椎韧带阻尼特性[J].科学技术与工程,2012,12(33):8822-8825. |
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| 作者姓名： | 周久光 |
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| 作者单位： | 1. 吉林大学,长春130012;北华大学,吉林1320021
2. 吉林大学,长春,130012 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 摘 要： | 脊椎韧带的阻尼特性在生物力学中起着非常重要的作用。为了在生理范围表征脊椎韧带的阻尼特性,利用应力松弛实验数据,采用似线性黏弹性理论模型,对三种韧带(包括前纵韧带-ALL,后纵韧带-PLL和黄韧带-LF)的阻尼性质进行模拟和分析。基于修正的QLV七参数模型给出复模量的理论公式。又考察应变对阻尼特性的影响。结果表明:LF与ALL和PLL阻尼特性不同。评估韧带阻尼范围受应变影响。
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| 关 键 词： | 韧带 黏弹性 模量 阻尼 |
| 收稿时间： | 2012/7/20 0:00:00 |
| 修稿时间： | 7/20/2012 3:43:45 PM |
Estimates damping properties of human cervical spine ligaments by modified QLV method |
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| zhoujiuguang.Estimates damping properties of human cervical spine ligaments by modified QLV method[J].Science Technology and Engineering,2012,12(33):8822-8825. |
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| Authors: | zhoujiuguang |
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| Institution: | 1,* (Department of Acoustics and Microwave Physics,College of Physics,Jilin University1,Changchun 130012,P.R.China; College of Basic medical,Beihua University2,Jilin 132001,P.R.China) |
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| Abstract: | The damping property of ligament plays an important role in biomechanics. In order to characterize the comprehensive viscoelastic behavior of cervical spine ligaments within their physiological range, we use quasi-linear viscoelastic theory model and the data from stress relaxation experiments to investigate the damping property of three types of human cervical spine ligaments (the anterior longitudinal ligament-ALL, the posterior longitudinal ligament-PLL and the ligamentum flavum-LF). This paper presents theory formula of complex modulus basing on a seven parameter model. We also investigate the influence of strain. The results show that: LF exhibits a different damping characteristic from ALL and PLL; the different strains have an influence on estimating the damping range of ligament. |
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| Keywords: | Ligament Viscoelasticity Modulus Damping |
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