不同致伤条件下人下颌骨投射伤计算机仿真模拟和对比分析

目的：利用有限元数字模拟技术动态仿真不同致伤条件下人下颌骨颏部投射伤动态致伤过程，通过生物力学分析探讨下颌骨投射伤致伤机制。方法建立人下颌骨投射伤三维有限元模型，动态模拟在不同致伤条件下（高、中、低三种投射速度）投射物致伤下颌骨颏部的动态过程，对模拟结果进行生物力学对比分析。结果成功模拟不同致伤条件下人下颌骨投射伤动态致伤过程，模拟结果逼真，投射速度越高，下颌骨损伤更为严重。结论利用数字模拟技术可以有效地仿真下颌骨投射伤，为口腔颌面部战创伤基础研究、临床救治提供参考和指导。

Simulation and comparison analysis of human mandible projectile injury in different injury conditions

Objective Finite element numerical simulation technique was applied to simulate the dynamic projectile injury process of human chin in different injury conditions and the mechanism of injury was discussed by using biomechanical analysis . Methods The 3D finite element model of human mandible projective injury was established to simulate the dynamic projectile inju‐ry process of human chin in different injury conditions (high ,medium and low speeds) ,and the simulation results were used to com‐parative analysis of biomechanics .Results The dynamic damage process of human chin projectile injury was simulated successfully in different injury conditions ,and the more serious injury of mandible was caused by faster speed .Conclusion The finite element method can simulate the projectile injury of mandible effectively ,and can provide a new thought and method for basic research and clinical treatment of oral and maxillofacial war injury .