肌腱的生物力学模型构建与试验分析

doi:10.3901/JME.2023.10.096

机械工程学报 ›› 2023, Vol. 59 ›› Issue (10): 96-105.doi: 10.3901/JME.2023.10.096

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肌腱的生物力学模型构建与试验分析

田国富¹, 赵瑞祥¹, 于灏^2,3, 王婷³

1. 沈阳工业大学机械工程学院沈阳 110870;
2. 中国医科大学附属第一医院骨科沈阳 110001;
3. 沈阳医学院研究生院沈阳 110034

收稿日期:2022-06-06 修回日期:2022-09-27 出版日期:2023-05-20 发布日期:2023-07-19
通讯作者: 赵瑞祥(通信作者),男,1994年出生,硕士研究生。主要研究方向为生物力学。E-mail:799677840@qq.com E-mail:799677840@qq.com
作者简介:田国富,男,1968年出生,教授,博士研究生导师。主要研究方向为机械装备的CAD/CAE技术、工程车辆及装备的设计与分析技术。E-mail:tianguofu@126.com
基金资助:
国家自然科学基金(51775354)和辽宁省教育厅基金(SYYX202011)资助项目。

Biomechanical Model Construction and Experimental Analysis of Tendon

Tian Guofu¹, Zhao Ruixiang¹, YU Hao^2,3, Wang Ting³

1. School of Mechanical Engineering, Shenyang University of Technology, Shenyang 110870;
2. Department of Orthopedics, The First Affiliated Hospital of China Medical University, Shenyang 110001;
3. Graduate School of Shenyang Medical College, Shenyang 110034

Received:2022-06-06 Revised:2022-09-27 Online:2023-05-20 Published:2023-07-19

摘要/Abstract

摘要： 为了测试肌腱的生物力学特性,并评估本构模型所描述软组织材料力学特性的能力,对猪趾伸屈肌腱进行力学性能拉伸试验,得到肌腱拉伸载荷与位移之间的关系,根据材料大变形不可压缩的特性运用新的数据处理方法得到材料的应力-应变关系曲线,应用非线性最小二乘法求解肌腱本构模型的材料参数。然后利用有限元分析软件对单轴拉伸进行仿真计算,并对比相应试验数据,以验证材料参数的可靠性。最后基于已验证的本构模型,建立两切口半切肌腱仿真模型,并进行试验验证。研究结果表明,采用的力学性能试验和选用的本构模型能够表征肌腱在拉伸过程中的材料力学行为并且应用到有限元仿真中,具有适用性强、准确性较高的特点,为预测肌腱延长术中肌腱组织的力学行为提供了一种新的方法和试验基础。

关键词: 肌腱, 力学特性, 本构模型, 超弹性, 横观各向同性, 有限元分析

Abstract: In order to test the biomechanical characteristics of tendon and evaluate the ability of the constitutive model to describe the mechanical properties of soft tissue materials, the tensile experiment on flexor and extensor tendons of pig toe is carried out, and the relationship between tensile load and displacement of the tendon is obtained, and then the stress-strain relationship curve of the material is obtained. The nonlinear least square method is used to solve the material parameters of the tendon constitutive model. Then, the finite element analysis software is used for the simulating calculation of uniaxial tension, and the corresponding experimental data is compared to verify the reliability of material parameters. Finally, a simulation model of semi-incision tendon with two-incision is established based on the verified constitutive model, and verified by experiments. The research results showed that the constitutive model selected in this study could characterize the mechanical properties of the tendon during the tensile process, which could be applied to the finite element simulation. It has the characteristics such as strong applicability and high accuracy, so as to provide a new method for predicting the mechanical behavior of the tendon tissue during tendon lengthening.

Key words: tendon, mechanical properties, constitutive model, hyperelasticity, transversely isotropic, finite element analysis

中图分类号:

O343

田国富, 赵瑞祥, 于灏, 王婷. 肌腱的生物力学模型构建与试验分析[J]. 机械工程学报, 2023, 59(10): 96-105.

Tian Guofu, Zhao Ruixiang, YU Hao, Wang Ting. Biomechanical Model Construction and Experimental Analysis of Tendon[J]. Journal of Mechanical Engineering, 2023, 59(10): 96-105.

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肌腱的生物力学模型构建与试验分析

Biomechanical Model Construction and Experimental Analysis of Tendon

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