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  

Development and validation of a FE model in swine mandibular composite tissue of fragment injury

作　　者：王敬夫 贾骏麒 田磊 李进[2] 钱秉文[2] 何黎升 WANG Jingfu;JIA Junqi;TIAN Lei;LI Jin;QIAN Bingwen;HE Lisheng(State Key Laboratory of Military Stomatology,The Fourth Military Medical University,China,710032Xi'an;National Clinical Research Center for Oral Diseases,The Fourth Military Medical University,China;Shaanxi Clinical Research Center for Oral Diseases,The Fourth Military Medical University,China;Department of Oral and Maxillofacial Surgery,School of Stomatology,The Fourth Military Medical University,China;Northwest Institute of Nuclear Technology,Xi'an)

机构地区：[1]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,西安710032 [2]西北核技术研究所

出　　处：《实用口腔医学杂志》2018年第1期16-20,共5页Journal of Practical Stomatology

摘　　要：目的:建立猪下颌复合组织破片伤三维有限元模型,并验证该数字化模型的有效性。方法:通过拍摄三维CT获取猪颌面部复合组织数字化信息,在Mimics 15.0中进行三维重建;设计直径与高度同为5.5 mm的圆柱体破片为致伤物,在有限元分析软件中加载加速度为831、1 120、1 536 m/s的破片撞击猪右侧下颌角区,模拟致伤过程和损伤的结果。同时采用二级轻气炮发射同形态30CrMnSi合金破片致伤离体猪头下颌角区,测量实际损态、面积和致伤时颌骨加速度,与数值模拟结果进行对比验证。结果:当破片速度分别为831、1 120、1 536 m/s时下颌骨损伤入口面积实验结果比数值模拟分别大13.4%、23.6%和22.3%,出口面积分别大18.7%、23.0%和26.5%,加速度峰值分别小16.7%、15.3%和14.6%。结论:成功建立了猪下颌复合组织破片伤数字化模型,其伤情数值模拟结果与动物实验结果吻合性较好,具有一定的有效性。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 by3D CT,the3D model and the cylinder fragment with the diameter and height of5.5mm 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 shape30CrMnSi alloy fragment with the speed of831,1120and1536m/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 of831,1120and1536m/s resulted in the larger thandibular damage area of entry in the in vivo experiment by13.4%,23.6%and22.3%;that of exit by18.7%,23.0%and26.5%;the smallar accelaration peak by16.7%,15.3%and14.6%,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.

关 键 词：下颌骨 战创伤 破片伤 生物力学 有限元分析(FE) 

分 类 号：R782.4[医药卫生—口腔医学]