猪眼外直肌生物力学性能的实验研究  

Mechanical Properties of Porcine Extraocular Muscles in Vitro

作　　者：张晓翔[1] 赵玉婷[1] 高志鹏[1] 王晓君[1] 

机构地区：[1]太原理工大学力学学院,太原030024

出　　处：《太原理工大学学报》2017年第2期250-253,共4页Journal of Taiyuan University of Technology

基　　金：国家自然科学基金重点资助项目:眼球功能相关疾患治疗机理的力学生物学研究(11032008);国家自然科学青年基金项目:在体角膜材料生物力学特性研究及基于角膜微观结构的建模分析(11402161);山西省重点教改项目(J2012014)

摘　　要：用Instron5544万能材料试验机对猪眼外肌样本进行单轴拉伸实验,获得相应的应力-应变关系曲线,然后用Mooney-Rivilin和Ogden超弹性模型对实验数据进行非线性拟合。利用得到的Mooney-Rivilin和Ogden模型的材料特性参数,在ABAQUS软件中建立有限元模型对眼外肌进行模拟,以验证Mooney-Rivilin和Ogden模型的材料特性参数用于数值建模的合理性。将模拟结果与实验结果进行比较,发现Mooney-Rivilin本构模型比Ogden本构模型更适合于描述眼外肌的小变形行为。Uniaxial tensile tests were used to determine the mechanical properties of porcine extraocular muscles in vitro.The experimental data were converted into the relationships of stress verse strain.Mooney-Rivilin and Ogden hyperelastic models were used to analyze the corresponding passive behaviors.The hyperelastic parameters identified were used as the input of numerical modeling to establish the finite element models with the corresponding hyperelastic constitutive models,respectively.Compared with the experimental results,the simulation results reveals that Mooney-Rivilin model has more potential for describing the small deformation of extraocular muscles than Ogden model.

关 键 词：眼外肌 单轴拉伸实验 本构模型 有限元分析 Mooney-Rivilin模型 Ogden模型 

分 类 号：R318.01[医药卫生—生物医学工程]