摘要
在太极拳运动中,对旋转动作产生的人体能量转化研究可以计算出肢体相对运动的动量。在进行数值分析时,需通过分析动作在不同受力方向下的剪应力,来完成旋转动作下人体能量转换数值分析。但传统方法只能得到腰椎各节段的重力矩、水平剪应力的变化趋势,对各剪切力计算精度差,导致能量转换数值分析不准确。提出基于有限元分析的太极拳旋转时人体能量转换数值模型。根据人体测量学指标确定太极拳旋转时人体各部位比例、质心变化位置、重量比例,利用Ansys软件对模型进行有限元网格划分,得到动作模型的剩余应力分量,计算出太极拳转腰动作形成的旋转动量,根据给出动量与对方碰撞瞬时的冲量,得到太极拳旋转时人体在竖直方向上的释放能量,以此为依据完成对太极拳旋转时人体能量数值分析。仿真结果表明,所提模型进行太极拳旋转时人体能量数值分析精度较高,且鲁棒性较强。
A numerical model for the body energy conversion under rotation action of shadowboxing is proposed based on the finite element analysis. Firstly, the ratio of each body part, centroid variation position, and weight ratio under rotation action of shadowboxing is confirmed according to the anthropometry index. Then, the finite element mesh generation is made to the model by using the Ansys software and the residual stress component of action model is obtained. Moreover,the rotation momentum generated by the turning waist action of shadowboxing is worked out, and the body energy release on the vertical direction when rotating is obtained according to the impulse at the crash instant of given momentum and opponent. Finally, the numerical analysis of body energy under the rotation action of shadowboxing is completed. The simulation results show that the model has high numerical analysis precision of body energy. The robustness is excellent.
出处
《计算机仿真》
北大核心
2017年第8期281-284,420,共5页
Computer Simulation
关键词
太极拳旋转动作
人体能量转换
数值分析
Rotation action of shadowboxing
Human energy conversion
Numerical analysis
