基于ABAQUS的下颌骨生物力学分析

发布时间：2018-03-22 11:17

本文选题：快速原型　切入点：计算机辅助设计　出处：《东北大学学报(自然科学版)》2014年03期 　论文类型：期刊论文

【摘要】：为解决游离腓骨瓣修复下颌骨缺损手术存在个体匹配差的问题,采用定制化修复钛板设计和制造方法.通过采集分析病人CT数据,利用可视化和CAD技术设计出符合病人生理结构的修复体模型.建立下颌骨的有限元模型,对比了修复前后的下颌骨的应力情况.利用快速原型技术制造出树脂模型用于手术指导,通过临床研究,该方法节省手术时间,提高手术成功率.下颌骨有限元分析结果表明:下颌骨应力集中区域主要分布于踝突区、下颌角、下颌骨修复处.随着加载力的增大,应力增加明显,特别是下颌骨修复处与踝突区应力分布增长明显.最大应力出现在下颌骨与腓骨的结合处,修复后的下颌骨高应力区泛化的现象得到明显的遏制,应力集中区域明显地减少.
[Abstract]:In order to solve the problem of individual mismatch in mandibular defect repair with free fibula flap, the design and manufacture method of titanium plate was designed and manufactured, and the CT data of patients were collected and analyzed. Using visualization and CAD techniques, the prosthesis model was designed to fit the patient's physiological structure, and the finite element model of mandible was established. The stress of mandible before and after repair was compared. The resin model was made by rapid prototyping technique to guide the operation. Through clinical research, the operation time was saved. The results of finite element analysis of mandible show that the stress concentration area of mandible is mainly located in the ankle process, mandibular angle and mandibular repair site, and the stress increases obviously with the increase of loading force. In particular, the stress distribution in the mandibular repair and the malleolus process increased obviously, and the maximum stress appeared in the joint of the mandible and fibula. The phenomenon of the extension of the high stress zone of the mandible after the repair was obviously restrained, and the stress concentration area was obviously reduced.
【作者单位】：东北大学机械工程与自动化学院;中国医科大学口腔医学院;
【基金】：教育部高等学校博士学科点专项科研基金资助项目(20100042110003) 中央高校基本科研业务费专项资金资助项目(N100703002) 辽宁省科学技术计划项目(2012225090) 沈阳市科学技术计划项目(F12-227-1-18)
【分类号】：R782

【共引文献】