武术跳跃动作落地速度对着地稳定性校正

发布时间：2018-06-03 21:56

  本文选题：武术跳跃动作 + 落地速度　； 参考：《计算机仿真》2017年08期

【摘要】：武术中跳跃动作的落地速度会严重影响着地稳定性。对武术中跳跃动作落地稳定性的校正,需要通过腿部肌肉收缩产生应力的最大位移,得到落地瞬间的最大应力,完成对落地稳定性的分析。传统方法通过跳跃过程中的应力应变大小及集中部位得到应力分布,但不能得到最大应力具体数值,导致对落地稳定性的校正精度低。提出基于有限元分析的武术跳跃动作落地速度对着地稳定性校正模型。以髋、膝、踝关节中心为作用点加载200N的垂直荷载,改变起跳瞬间的垂直速度,得到人体转动角速度下,计算出垂直载荷下的膝关节和踝关节矩处的应力值,得到腿部肌肉收缩产生的纵向应力最大位移,得到落地瞬间的水平速度,由此完成对武术跳跃动作落地速度对着地稳定性的影响分析。仿真结果表明,所提模型对落地稳定性的影响分析精度较高,且鲁棒性较强。
[Abstract]:The landing speed of jumping in martial arts will seriously affect the stability of the ground. In order to correct the stability of jumping movement in Wushu, it is necessary to obtain the maximum stress at the moment of landing by the maximum displacement of the stress produced by the contraction of the leg muscle, and to complete the analysis of the stability of the landing. The traditional method can obtain the stress distribution by the magnitude and concentration of stress and strain in the jumping process, but it can not get the specific value of the maximum stress, which leads to the low accuracy of the correction of the stability of the landing. Based on finite element analysis (FEM), a correction model of landing velocity of Wushu jumping action to ground stability is proposed. The vertical load of 200 N is loaded on the center of hip, knee and ankle joint. The vertical velocity of the take-off moment is changed, and the stress value of knee joint and ankle joint moment under vertical load is calculated under the rotation angular velocity of human body. The maximum displacement of longitudinal stress caused by leg muscle contraction was obtained, and the horizontal velocity of the moment of landing was obtained, and the effect of landing speed on the stability of landing was analyzed. The simulation results show that the influence of the proposed model on the stability of the ground is highly accurate and robust.
【作者单位】： 郑州工业应用技术学院;
【分类号】：G852;TP391.9
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本文编号：1974335