Establishment and simulation validation of a three-dimensional finite element model of pig mandible impact injury
10.3760/cma.j.issn.1001-8050.2015.08.018
- VernacularTitle:猪下颌骨撞击伤三维有限元模型建立及验证
- Author:
Tao LEI
;
Ying LI
;
Jiajun ZHENG
;
Tingting WANG
;
Liangxian XIE
- Publication Type:Journal Article
- Keywords:
Mandible;
Finite element analysis;
Swine
- From:
Chinese Journal of Trauma
2015;31(8):743-747
- CountryChina
- Language:Chinese
-
Abstract:
Objective To develop a three-dimensional element model of pig mandible impact injury and test the simulation results in an attempt to determine the feasibility and reliability of finite element numerical simulation method used in the maxillofacial impact injury.Methods CT data was used to develop a three-dimensional finite element model of pig mandible impact injury,and the dynamic process of impact injury was simulated.The simulation results were compared with the animal experiment and had energy check to validate the reliability and feasibility of the modeling and simulation methods.Results The three-dimensional finite element model was established successfully,containing 61,512 hexahedrons,5,450 tetrahedrons,4,030 trihedrons,and 67,159 nodes.The simulation process was realistic,and the simulation results showed no statistical difference with the animal experiment with regard to strain,acceleration,and other biomechanical properties (P ＞ 0.05).The simulated damage shape had a high similarity with animal specimens,and the result of energy check also complied with energy conservation law.Conclusion Finite element method is effective to simulate the dynamic process of mandible impact which ensures a correct and reliable model and simulation,and thus can be used to analyze the mechanism of maxillofacial impact injury.
