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目的建立人体胸部的三维有限元模型,以用于单兵防护工程研究。方法以CT的扫描数据为重建源图像,利用医学图像重建软件Mimics进行三维重建;在有限元前处理软件ANSYSICEMCFD中进行单元网格划分,并为模型各部分指定相应的材料特性参数;在有限元软件ANSYSLS-DYNA中完成有限元模型建模,并参照既往尸体实验数据检验模型有效性。结果建立了近似人体胸部解剖结构的有限元模型,模型的模拟计算结果和既往尸体实验结果基本相符。结论利用人体断层数据和专业软件,能够完成有限元模型的重建,模型能够满足单兵防护工程研究中进行人体胸部冲击相关数值分析的需要。
Objective To establish a three-dimensional finite element model of human chest for the study of individual protection engineering. Methods CT scan data were taken as reconstruction source images and reconstructed by using medical image reconstruction software Mimics. Cell meshing was performed in finite element preprocessing software ANSYSICEMCFD and corresponding material property parameters were specified for each part of the model. Finite element modeling was done in software ANSYSLS-DYNA, and the effectiveness of the model was verified with reference to previous cadaver experimental data. Results The finite element model of human chest anatomy was established. The simulation results of the model were basically consistent with the results of the previous autopsy. Conclusion Using the human body tomography data and professional software, the reconstruction of the finite element model can be completed. The model can meet the needs of numerical analysis of the human chest impact in the study of individual protection engineering.