猪下颌骨枪弹伤的三维有限元仿真模拟  

finite dement simulation of mandible gunshot wound in swine

作　　者：雷涛[1] 陈渝斌[2] 缪莹赟[3] 张纲[1] 谭颖徽[1] 

机构地区：[1]第三军医大学附属新桥医院口腔科,重庆400037 [2]第三军医大学附属大坪医院野战外科研究所口腔科 [3]重庆大学传动实验室

出　　处：《中华创伤杂志》2009年第5期461-464,共4页Chinese Journal of Trauma

基　　金：全军“十一五”医药卫生科研基金资助项目（062045）、（08G083）

摘　　要：目的建立猪下颌骨三维有限元模型，动态模拟子弹侵彻下颌骨过程，探讨颌面部枪弹伤有限元分析方法。方法将cT所获得的本地猪下颌骨医学数字图像通讯（digital imaging and communications in medicine，DICOM）数据通过MIMICS软件进行三维重建，然后利用ANSA软件划分网格建立猪下颌骨三维有限元模型，并在LS—DYNA软件中仿真7．62mm制式弹致伤过程，仿真结果与实体动物实验数据对比，验证三维有限元模型和仿真方法的可行性。结果建立了几何外形高度相似的猪下颌骨枪弹伤三维有限元模型，成功仿真了7．62mm制式子弹枪弹伤动态损伤过程，部分仿真数据与动物实验数据有较高一致性。结论有限元法在颌面部火器伤基础研究中有较好的推广应用价值。Objective To establish a three-dimensional （3D） finite element model of a swine mandible, simulate the dynamic procedure of bullet damaging the swine mandible and explore a finite element analysis method on maxillofacial gunshot wound. Methods The digital imaging and communications in medicine （DICOM） data obtained from CT scanning of a swine mandible were remerged into a 3D finite element model of the original specimen through Mimics and ANSA software, then a simulation of 3D finite element model penetrated by a 7.62 mm bullet was carried out through LS-DYNA software. The simulation data were compared with those from animal experiment in laboratory to test the feasibility of 3 D finite element model and the simulation method. Results A 3D finite element model of a swine mandible was established, with highly identical geometric size with the specimen. In the meantime, the dynamic process of a 7.62 mm bullet damage to the model was successfully simulated. Data from the simulation and those from animal experiment showed a high level of consistency. Conclusion 3D finite element method is prosperous in application in basic research on maxillofacial gunshot wound.

关 键 词：下颌骨 创伤 枪击 有限元分析 三维 生物弹道学 

分 类 号：R782[医药卫生—口腔医学]