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工程科学与技术:2012,44(6):67-70
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3类面型下颌骨应力分布的数值研究
(1.四川大学 生物力学工程实验室;2.北京航空航天大学 生物与医学工程学院,生物力学与力生物学教育部重点实验室)
Numerical Investigation of the Stress Distribution of Mandible from Three Kinds of Facial Type
(1.Biomechanical Eng. Lab.,Sichuan Univ.;2.Key Lab. of Ministry of Education for Biomechanics and Mechanobiology,School of Biological Sci. and Medical Eng.,Beihang Univ.)
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投稿时间:2012-05-20    修订日期:2012-07-27
中文摘要: 针对不同下颌骨结构对应力分布的影响问题,基于面型与下颌骨结构的关系,选择3类面型(尖型、方型和圆型)的下颌骨,建立3维有限元模型。比较分析了3类面型下颌骨的位移、应力及肌肉力分布规律和差异。结果发现,不同面型所对应的下颌骨具有一定的构型特征。圆型的前后径距显著低于方型和尖型,但其对位移、应力分布和肌肉力等的影响不显著。方型面型下颌骨的升支高度明显高于圆型和尖型,其位移、应力和肌肉力均显著低于圆型和尖型。说明不同下颌骨结构对应力分布的影响是存在的,但不同的结构差异,其影响是不同的。因此,为了使有限元结果更合理和具有可比性,对临床有更明确的指导作用,深入细致地研究不同构型下颌骨对应力分布的影响规律,建立下颌骨有限元模型的量化标准是非常必要的。
中文关键词: 面型  下颌骨  有限元模型  应力分布
Abstract:According to the relations of facial type and mandible configuration, three 3-D finite element models of mandible from three kinds of facial type of square, peaked and circle chin were established to research the influence of mandible configuration on the stress distribution.The distribution of displacement, Von-mises stress and main muscle forces was analyzed comparatively.The results showed that the mandible from different facial type possessed remarkable structural feature. Though the anteroposterior distance of circle chin was lower markedly than those of square and peaked chin, its influence on the distribution of displacement, Von-mises stress and main muscle forces was indistinctive. However, the ramus height of spare chin was higher notably, and its displacement, Von-mises stress and main muscle forces were less than the other two. It is concluded that not only the mandible configuration would affect the stress distribution, but also the influence degree of different location was different. Therefore, in order to obtain more reasonable and comparable FEM results and more explicit guiding significance to clinical treatment, it is necessary to build some criterions for the finite element modeling of mandible, through deeply researching the influence of mandible configuration on the stress distribution.
文章编号:201200384     中图分类号:    文献标志码:
基金项目:四川大学青年教师科研启动基金资助项目(2009SCU11045)
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李亚兰,郭维鹏,蒋文涛,王清远,唐志雄,郑庭辉,樊瑜波.3类面型下颌骨应力分布的数值研究[J].工程科学与技术,2012,44(6):67-70.
Li Yalan,Guo Weipeng,Jiang Wentao,Wang Qingyuan,Tang Zhixiong,Zheng Tinghui,Fan Yubo.Numerical Investigation of the Stress Distribution of Mandible from Three Kinds of Facial Type[J].Advanced Engineering Sciences,2012,44(6):67-70.