20-0519高速贯穿伤三维有限元模型的初步建立二院郑轶.doc

高速贯通伤三维有限元模型的初步建立 郑轶,殷一红，尹庆水, 王智运 宁波市第二医院骨科，浙江，宁波，315010；2、宁波市中医院，浙江，宁波，315010广州军区广州总医院骨科医院，广州510010） 摘要：目的：高速贯通伤三维有限元模型的建立。方法：运用三维重建软件Mimics 14.0软件，CAD辅助软件Pro/E, 逆向工程软件Geomagic Studio，Ansys Workbench中的动态有限元分析模块，通过对模拟子弹不同角度(45度，67.5度，90度)的入射胫骨，动态观察三维有限元的应力峰值Stress intensity(Mpa)、变形量Total deformation(mm)和等效弹性应变von-mise（mm/mm）。结果：子弹1400m/s穿透胫骨骨皮质时，最大变形量（Total deformation）为138.29mm（90°入射角）,其次为66.59mm（45°入射角），最小为62.56mm（67.5°入射角）；等效弹性应变(von-mise)依次为1.43 mm/mm（入射角45°） 1.31 mm/mm（入射角90°）1.22 mm/mm（入射角67.5°）；应力强度峰值(Stress intensity)依次为14447 Mpa（入射角67.5°）2723 Mpa（入射角45°）2401 Mpa（入射角90°）。结论：利用计算机模拟三维动态有限元计算方法表现相同速度子弹不同射入胫骨的生物力学变化，可动态观察子弹伤的应力动态变化过程，为战场救护和临床工作中对于火器伤伤口的处置提供生物力学基础。 关键词：高速贯通伤；三维有限元；应力分析；胫骨 Preliminary Reconstruction and Application of Three Timensional Finite Element Model of the?Penetrating Injury ZHENG Yi ,YIN Yi-hong,YIN Qing-shui, WANG Zhi-yun (Department of orthopaedics,Ningbo No.2 Hospital, Zhejiang,Ningbo, 315010;Ningbo Municipal Hospital of TCM,Zhejiang,Ningbo, 315010;Department of Orthopaedics, Liuhuaqiao Hospital,Guangzhou 510010) Abstract: Objective: To establish the three dimensional finite element model of the penetrating injury .Methods:By means of simulation bullet different Angle (about 45 degrees, 67.5 degrees, 90 degrees) the incidence of tibia, observing dynamically the three dimensional finite element Stress peak Stress intensity (Mpa), the deformation of Total deformation (mm) and equivalent elastic strain von - mise (mm/mm) by using reconstruction software Mimics 14.0,CAD software Pro/E, reverse engineering software Geomagic Studio, the dynamic finite element analysis module of Ansys Workbench .Results: The maximum deformation (Total deformation) was 138.29 mm (90 ° Angle of incidence), followed by 66.59 mm (45 ° Angle), minimum 62.56 mm (67.5 ° Angle of incidence);Equivalent elastic strain (von-mise), in turn, was 1.43 mm/mm (incidence Angle 45 °) 1.31 mm/mm (incidence Angle 90 °) 1.22 mm/mm (67.5 ° Angle of incidence);Stress inten