Construction and identification of humerus three-dimensional finite element model in children
10.3969/j.issn.2095-4344.2013.30.009
- VernacularTitle:儿童肱骨三维有限元建模及验证☆
- Author:
Shijie RUAN
;
Cong SHEN
;
Haiyan LI
;
Lijuan HE
- Publication Type:Journal Article
- Keywords:
bone and joint implants;
digital orthopedics;
humerus;
children;
finite element model;
three-point bending test;
load-displacement;
biomechanical analysis
- From:
Chinese Journal of Tissue Engineering Research
2013;(30):5472-5476
- CountryChina
- Language:Chinese
-
Abstract:
BACKGROUND:Mechanical experiment of finite element numerical simulation is the effective method to research the biomechanical structure of human body. OBJECTIVE:To establish the three-dimensional finite element model of a normal 6-year-old child’s humerus. METHODS:CT images of a 6-year-old child volunteer were imported to the Mimics 10.01 software. The threshold segmentation method was used to rebuild the humerus three-dimensional model. The surface optimization treatment and surface patches dicision were performed on the surface of the model with Geomagic Studio 12.0 software. Then the mesh generation was completed in the software TrueGrid. Final y, the material properties were set and the finite element model was completed. The boundary conditions and constrains were exerted to simulate the three-point-bending test of humeurs. After the simulation, the results were outputted. RESULTS AND CONCLUSION:The humerus finite element model included 3 024 nodes and 18 758 nodes-hexahedron elements. The 0.01 m/s and 3 m/s dynamic loads were loaded respectively, then the central humerus fracture occurred and the load-displacement curve was close to the cadaver test results. The simulation results show that the simulation results of children humerus finite element model are close to the cadaver’s test, and the finite element simulation method can simulate the physical properties of the human skeleton very wel .
