篮球运动员投球目标技术优化培训仿真

摘要

对篮球运动员投球目标技术优化培训,可提高篮球运动的比赛成绩.进行投球培训时,应将篮球运动员投球过程中应力、应变变化特性进行分析作为培训指导的基础,但是传统方法通过分析不同的边界条件对股篮球运动员投球目标技术培训的最大影响因素完成培训,但是不能准确分析篮球运动员投球过程中应力、应变变化特性,导致投球技术培训达不到效果.提出一种基于有限元的篮球运动员投球目标技术优化培训方法.上述模型先利用Mimics和Ansys软件组建人体股骨应力分布模型,在上述基础上约束地面刚体,对模型施加2MS的速度载荷,得到篮球运动员投球过程中应力、应变变化特性,对人体股骨上段内侧皮质和外侧皮质间中点进行应力计算,并以计算的结果为依据对人体股骨头、骨小梁进行循环压缩试验,分析不同受力方向下股骨头骨小梁的骨体积分数,骨小梁平均厚度,以及弹性模量循环次数等力学指标,依据上述力学指标调整投球的姿势,完成篮球运动员投球目标技术优化培训.仿真结果表明,所提模型为篮球运动员投球目标技术的提高提供了有效的依据.%Based on finite element,this paper proposes an optimization training method for shoot goal technology of basketball player.Firstly,the author used Mimics and Ansys to build stress distribution model of thighbone and restrained ground rigid body on that basis,then applied 2M/S speed load to the model to obtain variation feature of stress-strain during shoot process.Moreover,the research calculated midpoint between inside cortex and outside cortex of thighbone upside and used the calculation results as basis to carry out circulation compression test for femoral head and trabecula.The research also analyzed mechanics indexes of femoral head and trabecula,such as bone volume fraction,average thickness of bone trabecula,and cycle index of elasticity modulus at different stress direction,and adjusted shoot posture according to the mechanics index.Finally,the optimization train was completed and the simulation results show that the model can provide effective basis for improving the shoot goal technology.