基于Neo-Hookean本构模型的人体膝关节韧带力学性能测试分析

Mechanical Properties Test and Analysis on Human Knee Ligaments Based on the Neo-Hookean Constitutive Model

测试和分析研究国人膝关节的前交叉韧带、后交叉韧带、内侧副韧带、外侧副韧带以及髌腱,基于超弹性本构模型(Neo-Hookean模型)的力学性能参数,为膝关节相关生物力学研究提供数据参考.通过对4具国人膝关节标本进行解剖,获得人体膝关节主要的韧带组织样本,对所获得的韧带样本进行超弹性材料的单轴拉伸测试,并运用超弹性材料的应变能密度函数本构模型中的NeoHookean模型对测试数据进行数据处理,得到人体膝关节韧带基于超弹本构模型的力学性能参数.解析求得了国人膝关节的韧带组织基于超弹性本构模型的力学性能参数,可用于膝关节的生物力学特性的研究,并且为国人膝关节韧带性能数据库提供数据参考.

The mechanical properties parameters of anterior cruciate ligaments,posterior cruciate ligaments,medial collateral ligaments,lateral collateral ligaments and tendons of Chinese knee joints were tested and analyzed based on the hyperelastic constitutive model(Neo Hookean model)in order to provide reference data for the research of knee joint biomechanics.Through the anatomy of4Chinese knee joints,the main ligament specimens of the human knee joints were obtained.Then,uniaxial tensile tests were carried out on the hyperelastic material of the obtained ligament specimens,and the experimental data were processed by using the Neo Hookean model,which is a strain energy density function constitutive model for hyperelastic materials.The mechanical properties parameters of the human knee joint ligaments based on the hyperelastic constitutive model were calculated.The mechanical properties parameters of Chinese knee joints were successively obtained.The parameters can be used to study the biomechanical properties of knee joints and provide data reference for the properties database of Chinese knee ligaments.