Development and validation of a FE model in swine mandibular composite tissue of fragment injury
10.3969/j.issn.1001-3733.2018.01.003
- VernacularTitle:猪颌面软硬复合组织破片伤有限元模型的建立与与有效性分析
- Author:
Jingfu WANG
1
;
Junqi JIA
;
Lei TIAN
;
Jin LI
;
Bingwen QIAN
;
Lisheng HE
Author Information
1. 710032 西安, 军事口腔医学国家重点实验室, 口腔疾病国家临床医学研究中心, 陕西省口腔疾病临床医学研究中心, 第四军医大学口腔医院口腔颌面外科
- Keywords:
Mandible;
War trauma;
Fragment injury;
Biomechanics;
Finite element analysis(FE)
- From:
Journal of Practical Stomatology
2018;34(1):16-20
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To establish and verify the validity of a finite element(FE) model of fragment injury in swine mandibular composite tissue. Methods: Swine facial composite tissue digital information was obtained by 3D CT,the 3D model and the cylinder fragment with the diameter and height of 5. 5 mm were reconstructed and designed in mimics15. 0. The right mandibular angle region was impacted by the fragment with velocities in finite element analysis software. A two stage light gas gun was used to launch the same shape 30CrMnSi alloy fragment with the speed of 831,1 120 and 1 536 m/s respectively to impact swine mandibular angle area. The actual damage area and acceleration at jaw were measured and compared with the digital simulation results. Results: Compared with the data of digital simulation the fragment with the speed of 831,1 120 and 1 536 m/s resulted in the larger mandibular damage area of entry in the in vivo experiment by 13. 4％,23. 6％ and 22. 3％; that of exit by 18. 7％,23. 0％ and 26. 5％; the smallar accelaration peak by 16. 7％,15. 3％ and 14. 6％,respectively. Conclusion: A digital model of the swine mandible composite tissue fragment injury model is established. The simulation results of the FE model are consistent similar to those of the in vivo test data.
