垂直矫治曲结构与力学性能的有限元分析

目的:研究垂直曲的结构与力学性能之间的关系,为临床上更好地应用垂直曲提供参考依据。方法:根据垂直曲在应用过程中的作用方式,建立垂直曲的几何模型,应用有限元分析软件ANSYS对曲的力学性能进行模拟计算,最后对其规律进行总结。结果:增加垂直曲的臂长、高度或弯曲半径,曲变形时产生的力和力矩值下降。增加臂长时力和力矩的比值减小,而增加高度和弯曲半径时却增大。加大垂直臂间隙时,产生的力和力矩值增大,而力和力矩的比值变化不大。结论:实际应用中,可适当改变垂直曲的结构,调整曲的力、力矩及力和力矩的比值,以满足治疗中不同个体的需要。

Relationship between the vertical loop structure and the mechanical properties

PURPOSE: The relationship between vertical loop structure and its mechanical properties was investigated in order to provide reference data for more proper use of vertical loop. METHODS: According to the acting manner in use, finite elements model of vertical loop was established and the finite elements software ANSYS was used to simulate the mechanical characteristics of the loops. The simulated data were summarized at the end. RESULTS: The force and moment decreased with the increase of arm length, height and arc radius of the loop. The ratios of force to moment (M/F) decreased with the increase of arm length, but increased with the increase of height and arm radius. When the interval between the vertical arms enlarged, the force and moment rose and the M/F did not vary significantly. CONCLUSION: To satisfy the requirement of individual patient, the structure of loop can be adjusted properly to output mediate force, moment and M/F value.