[1]魏志刚,汤文成,严斌,等.基于黏弹性模型的牙周膜生物力学研究[J].东南大学学报(自然科学版),2009,39(3):484-489.[doi:10.3969/j.issn.1001-0505.2009.03.013]
 Wei Zhigang,Tang Wencheng,Yan Bin,et al.Biomechanical analysis of periodontal ligament based on viscoelastic model[J].Journal of Southeast University (Natural Science Edition),2009,39(3):484-489.[doi:10.3969/j.issn.1001-0505.2009.03.013]
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基于黏弹性模型的牙周膜生物力学研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
39
期数:
2009年第3期
页码:
484-489
栏目:
生物医学工程
出版日期:
2009-05-20

文章信息/Info

Title:
Biomechanical analysis of periodontal ligament based on viscoelastic model
作者:
魏志刚1 汤文成1 严斌2 杨宝宽2
1 东南大学机械工程学院, 南京 211189; 2 南京医科大学口腔医院, 南京 210029
Author(s):
Wei Zhigang1 Tang Wencheng1 Yan Bin2 Yang Baokuan2
1 School of Mechanical Engineering, Southeast University, Nanjing 211189,China
2 School of Stomatology, Nanjing Medical University, Nanjing 210029, China
关键词:
牙周膜 超弹性 黏弹性 有限元分析 生物力学
Keywords:
periodontal ligament hyperelasticity viscoelasticity finite element analysis biomechanics
分类号:
R318.01
DOI:
10.3969/j.issn.1001-0505.2009.03.013
摘要:
同时使用人体牙周膜的1组单轴拉伸和1组简单剪切的试验数据,对现有的几种超弹性应变能函数进行了参数拟合,结果表明Ogden模型比其他模型能更好地拟合实验数据.基于生物力学的原理,对实验获得的归一化应力松弛函数进行了分析推导,并转化为基于Ogden应变能函数的黏弹性模型; 利用获得的牙周膜本构模型,对上颌的第一前磨牙的牙周膜使用线性黏弹性模型,对正畸初始阶段的受力情况进行了仿真模拟,研究分析了黏弹性对正畸过程中牙周膜力学响应仿真结果的影响.研究结果表明:Ogden模型可以较好地拟合人体牙周膜试验的2组数据; 使用不可压缩的Ogden模型与使用线弹性模型获得的牙周膜力学响应有较大差别,牙周膜组织上各处的黏性响应与其位置有关.
Abstract:
A group of uniaxial tension and a group of simple shear experiment data from human periodontal ligaments were used together for data fitting of several hyperelastic energy functions. The results show that the Ogden model is more appropriate for describing the mechanical characteristics of periodontal ligament than the others. The relaxation equation obtained from the experiments was deduced to get the form of a viscoelastic model based on the Ogden strain energy function. The stress in the periodontal ligament of the maxillary first premolar during the initial phase of orthodontics was analyzed with this model, and then the influence of viscoelasticity on the simulation results of the periodontal ligament mechanical response was studied. Results show that the Ogden model can achieve a good agreement with the two groups of experimental data in the literature. There is an apparent difference between the results obtained with the Ogden model and the linear model respectively; the visco response of the periodontal ligament shows a significant dependence on its position.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 魏志刚(1975—),男,博士生; 汤文成(联系人),男,博士,教授,博士生导师,tangwc@seu.edu.cn.
引文格式: 魏志刚,汤文成,严斌,等.基于黏弹性模型的牙周膜生物力学研究[J].东南大学学报:自然科学版,2009,39(3):484-489. [doi:10.3969/j.issn.1001-0505.2009.03.013]
更新日期/Last Update: 2009-05-20