CAJ | 학술논문

目的利用有限元数字模拟技术动态仿真人下颌骨颏部爆炸伤损伤过程,并进行生物力学分析,探讨颌面部爆炸伤致伤机制. 方法建立人下颌骨爆炸伤三维有限元模型,动态模拟颏部在不同致伤条件下爆炸动态损伤过程,利用Von Mises应力及有效应变对模拟的结果进行生物力学分析结果成功模拟人下颌骨颏部爆炸伤动态损伤过程并进行致伤机制的生物力学分析,在1 000 mg、3 cm条件下,髁状突颈部Von Mises应力及有效应变值最高(9.1×106 Pa及0.62×10-3ε)、下颌角正中次之(6.1×106 Pa及0.42×10-3ε)、下颌骨颏孔区最小(6.1×106 Pa及0.39×10-3ε),距离较爆炸当量对各力学指标及损伤程度影响更为明显. 结论有限元法可以有效模拟下颌骨爆炸伤,为口腔颌面部爆炸伤临床救治提供新的思路和途径.
목적 이용유한원수자모의기술동태방진인하합골해부폭작상손상과정,병진행생물역학분석,탐토합면부폭작상치상궤제. 방법 건립인하합골폭작상삼유유한원모형,동태모의해부재불동치상조건하폭작동태손상과정,이용Von Mises응력급유효응변대모의적결과진행생물역학분석 결과 성공모의인하합골해부폭작상동태손상과정병진행치상궤제적생물역학분석,재1 000 mg、3 cm조건하,과상돌경부Von Mises응력급유효응변치최고(9.1×106 Pa급0.62×10-3ε)、하합각정중차지(6.1×106 Pa급0.42×10-3ε)、하합골해공구최소(6.1×106 Pa급0.39×10-3ε),거리교폭작당량대각역학지표급손상정도영향경위명현. 결론 유한원법가이유효모의하합골폭작상,위구강합면부폭작상림상구치제공신적사로화도경.
Objective To simulate a finite element model for biomechanical analysis of mandible chin blast injury and analyze the mechanism of maxillofacial blast injury.Methods The three-dimensional element model of human mandible blast injury was established to simulate the dynamic process of injury to the mandible chin.Von Mises stress and effective strain were evaluated in biomechanical study of the simulation results.Results The dynamic damage process of human mandible chin blast injury was simulated successfully.In the condition of 1 000 mg and 3 cm,the Von Mises stress and effective were maximum at condylar neck region (9.1 × 106 Pa,0.62 × 10-3ε),were second at mandibular angle region (6.1 × 106 Pa,0.42 × 10-3ε),and minimum at mental foramen region (6.1 × 106 Pa,0.39 × 10-3ε).Blast distance rather than blast equivalent produced more effect on the mechanical parameters and damage degree.Conclusions Von Mises stress and effective strain can be applied to the evaluation of bone tissue damage.The finite element method is effective in simulating mandible blast injury and can provide a new thought and approach to clinical treatment of oral and maxillofacial blast injury.