Biomechanical Model Construction and Experimental Analysis of Tendon

doi:10.3901/JME.2023.10.096

Abstract

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

CLC Number:

O343

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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