A Continuum Constitutive Model of skeletal Muscle at Variable Strain Rate
10.16156/j.1004-7220.2021.06.10
- VernacularTitle:变应变率下骨骼肌连续介质本构模型
- Author:
Cheng KE
1
;
Fang WANG
1
;
Mingxin LI
2
;
Zijun CAO
1
;
Hu KONG
1
;
Jianguo ZHANG
1
;
Yubo FAN
3
Author Information
1. The Key Laboratory of Integrated Design and On-line Monitoring of Light Industrial and Food Engineering Machinery and Equipment in Tianjin,College of Mechanical Engineering, Tianjin University of Science and Technology；The Key Laboratory of Rehabilitation Assistive Devices Technology and System of the Ministry of Civil Affairs in Beijing,National Research Center for Rehabilitation Assistive Devices
2. Department of Traumatology, Hospital of Tianjin
3. The Key Laboratory of Biomechanics and Force Biology of Ministry of Education in Beijing, College of Biological and Medical Engineering，Beihang University
- Publication Type:Journal Article
- Keywords:
skeletal muscle;
strain rate;
hyperelastic material;
constitutive model;
active and passive;
continuum model
- From:
Journal of Medical Biomechanics
2021;36(6):E896-E902
- CountryChina
- Language:Chinese
-
Abstract:
Objective Aiming at the problem that mechanical properties for the continuum of muscle tissues cannot be considered in active and passive behaviors of different structurally coupled muscles, a method of passive and active coupling in the same constitutive equation was proposed to construct ahyperelastic active and passive constitutive model of skeletal muscle continuum. Methods In order to calibrate parameters of the passive constitutive model, the uniaxial tensile experiment method and conditions were given, and through theoretical derivation, the specific method of using experimental data to solve the passive model parameters was introduced. In order to verify effectiveness of the active model, the model was verified with an example. Results The curves predicted by the model were in good agreement with the experimental output stress-stretch ratio curves. At the same strain, the maximum error of passive stress and total stress were only 20 kPa and 40 kPa. Conclusions The continuum hyperelastic constitutive model can better simulate active and passive behavior of skeletal muscles, which is beneficial for modeling and simulation of human muscles in further study.
