上颌骨复合体战创伤三维有限元模型的建立

目的建立上颌骨复合体战、创伤三维有限元模型,为颌面部战、创伤提供生物力学分析依据。方法用螺旋CT断层扫描技术,应用Mimics软件辅助快速建立上颌骨复合体三维有限元模型,在模型上进行颌面骨载荷作用下碰撞实验。结果快速建立上颌骨复合体有限元模型,在冲击载荷时,上颌骨复合体Von-Mises应力在撞击处为2607.10kPa(1kPa=7.5mmHg);鼻底部为2313.35kPa;鼻根点为2008.45kPa;颧额缝为3518.69kPa;颧牙槽嵴为2195.95kPa;翼上颌缝为2113.54kPa;硬腭后部为1880.23kPa;颧弓为1653.88kPa。结论利用Mimics建立上颌骨复合体战、创伤三维有限元模型,有较高的真实性和精确的度。能够满足颌面部战、创伤生物力学分析需要。

The study on the construction of three dimensional finite element model of the maxillay complex with war-wound

Objective To construct three dimensional finite element model of maxillary complex with warwound in order to provide the foundation of studying maxillofacial trauma.Methods A three dimensional finite element model of maxillary complex was constructed by thin-layer CT and Mimics software.And making impact text.Results Constructing a three dimensional finite element model of maxillary complex,in the impact text,the Von-Mises srtess distribution of maxillary complex as:impact place was 2 607.10 kPa;basis nasi was 2 313.35 kPa;radix nasi was 2 008.45 kPa;sutura nygomaticofrontalis was 3 518.69 kPa;maxilla zygomatic crest was 2 195.95 kPa;pterygomaillary is 2 113.54 kPa;palatum durum is 1 880.23 kPa;zygomatic arch is 1 653.88 kPa.Conclusion The contructed maxillary complex model is real and accurate.And it can provide the foundation of studying biomechanics mechanism of maxillary fracture in war-wound.