基于蠕变试验的人体牙周膜黏弹性力学行为研究  

Research on viscoelastic mechanical behavior of human periodontal ligament based on creep tests

作　　者：吴斌[1] 鹿如鑫 赵思雨 谢理哲[2] 严斌[2] 黄辉祥 汤文成[4] 杨宇[4] Wu Bin;Lu Ruxin;Zhao Siyu;Xie Lizhe;Yan Bin;Huang Huixiang;Tang Wencheng;Yang Yu(College of Mechanical and Electronic Engineering,Nanjing Forestry University,Nanjing 210037;Jiangsu Key Laboratory of Oral Diseases of NMU,Department of Orthodontics,the Affiliated Stomatological Hospital of NMU, Nanjing 210029;School of Mechanical Engineering,Nanjing Institute of Technology,Nanjing 211167;School of Mechanical Engineering,Southeast University ,Nanjing 211189,China)

机构地区：[1]南京林业大学机械电子工程学院,江苏南京210037 [2]南京医科大学口腔疾病研究江苏省重点实验室,南京医科大学附属口腔医院正畸科,江苏南京210029 [3]南京工程学院机械工程学院,江苏南京211167 [4]东南大学机械工程学院,江苏南京211189

出　　处：《南京医科大学学报（自然科学版）》2018年第12期1766-1770,共5页Journal of Nanjing Medical University(Natural Sciences)

基　　金：国家自然科学基金(81571005,51305208);东南大学-南京医科大学合作基金(2242017K3DN02).

摘　　要：目的:研究人牙周膜黏弹性力学行为,通过蠕变试验获取相关数据,构建三参数黏弹性本构模型并求取模型参数。方法:取4例人体牙槽骨-牙周膜-牙齿复合体制作水平切片样本,使用动态热机械分析仪对其进行蠕变试验,获得与时间相关的试验数据,再基于连续介质力学构造三参数Zener模型,并对试验数据进行拟合获得模型的具体特征参数。结果:4例样本拟合曲线趋势一致,校正决定系数均在0.95以上,拟合程度最高的1例样本达0.986 54,且残差平方和都较小。结论:Zener模型能够用于描述人体牙周膜黏弹性力学行为中的蠕变特性。Objective:To investigate the viscoelastic mechanical behavior of human periodontal ligament(PDL),obtain relevant data through creep test,construct a three-parameter viscoelastic constitutive model and obtain model parameters. Methods:Four human bone-PDL-tooth complex was cut to make the transverse samples. A dynamic thermomechanical analyzer was used to perform creep tests,and time-dependent test data were obtained. The three-parameter Zener model was constructed based on continuous medium mechanics,and the experimental data were fitted to obtain the specific characteristic parameters of the model. Results:The curves of the four samples were consistent,the correction coefficients are all above 0.95,the highest fitting sample is 0.986 54,and the residual sum of squares are all small. Conclusion:It is proved that the Zener model can be used to describe the creep characteristics in the viscoelastic mechanical behavior of human PDL.

关 键 词：人体牙周膜 黏弹性 蠕变 本构模型 生物力学 

分 类 号：R318.01[医药卫生—生物医学工程]