摘要
对跳跃运动中男性胫骨应力损伤部位进行有效识别,可以深入了解男性胫骨运动性损伤的发病机理。进行损伤识别时,应依据胫骨应力分布变量,建立男性胫骨应力分布有限元模型,但是传统方法通过CT扫描结合Simpleware医学建模完成损伤识别,但是无法计算实际跳跃运动下胫骨内部的应力值,损伤识别误差较大。提出一种基于差动力理论的跳跃运动中男性胫骨应力损伤部位识别方法。运用差动力理论计算出跳跃运动下男性胫骨应力分布变量,获得分布载荷作用下的载荷矩阵,在ANSYS有限元分析软件平台下,组建跳跃运动下男性胫骨应力分布有限元模型,计算出实际跳跃运动下男性胫骨骨骼密度弹性模量,胫骨远端部位及骨密度变化值、胫骨关节外侧肌力和胫骨骨内斜肌肌力失效的应力值,以计算的结果为依据组建跳跃运动中男性胫骨应力损伤部位识别模型,采用内嵌于Sold-Works之上的DDM仿真软件模拟跳跃运动全过程对建立的模型进行验证,仿真结果表明,利用跳跃运动中男性胫骨应力损伤部位识别结果与实验计算的男性胫骨应力损伤分布分析结果基本一致。
In this paper,a recognition method for stress injury part of male tibia in jumping is propose based on the differential force theory. Firstly, the differential force theory was used to work out the stress distribution variable of male tibia in jumping and obtain the load matrix under distribution load. Then, a finite element model of tibia stress distribution was built and the elasticity modulus of tibia skeleton density, variation value of distal tibia and skeleton density were worked out, and stress value of muscle strength of tibia joint outside and tibia endogenous oblique muscle was lapsed. Moreover,the recognition model of stress injury part according to the computation result was built. Finally, the DDM simulation software embedded in the Solid- Works was used to simulate the overall process of jumping and the established model was verified. The simulation results show that the recognition result is consistent with the experimental calculation analysis result of stress injury distribution in male tibia.
出处
《计算机仿真》
北大核心
2017年第2期274-277,288,共5页
Computer Simulation
基金
河南省科学技术厅科技计划项目(162102310585)
关键词
跳跃运动
胫骨应力分布
有限元分析
损伤识别
Jumping movement
Stress distribution of the tibia
Finite element analysis
Damage identification
