单人跳跃荷载模型及其参数取值

Experimental Investigation on Single Person's Jumping Load Model and Its Parameters

采用三维动作捕捉技术结合固定测力板,开展了100人次5种跳跃频率下的跳跃荷载曲线的测试实验.在跳跃荷载的傅里叶级数模型基础上,通过对实验数据的分析指出模型的计算谐波阶数可取为6阶,模型中傅里叶系数(动载因子)和相位角则可根据已知设计条件按两种方法取值,分别利用给定的跳跃频率或跳跃接触率来计算.讨论了两种取值方法的优缺点和适用条件,进一步给出了所建议荷载模型的详细使用步骤,并与国外现有荷载模型的动载因子值进行了对比.

This paper aims to develop the load model for single person＇s jumping.The three-dimension motion capture technology was employed in the experiment in conjunction with force plates to record the jumping load curves.One hundred subjects participated in the experiment and every subject completed five test cases including one free jumping case and four fixed-frequency jumping cases.Based on the experimental results and the classical Fourier series function,the jumping load model was developed and its parameters could be determined by the preset jumping frequency or the jumping contact ratio.Maximum order of harmonics of the model was proposed to be as six.Advantages and disadvantages of the two ways were discussed as well as the detailed application procedure of the model.