Mathematical Model to Generate Asymmetric Pulses due to Human Jumping
Mathematical Model to Generate Asymmetric Pulses due to Human Jumping
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DOI：
10.1061/(asce)em.1943-7889.0000044
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发表时间：
2009-10
期刊：
影响因子：
--
通讯作者：
V. Racic;A. Pavic
中科院分区：
文献类型：
--
作者：
V. Racic;A. Pavic
提出了一种新的数学模型来产生由单人跳跃引起的合成垂直力信号。与已有的结合傅里叶级数分析的半正弦模型相比，该模型能更可靠地再现实际跳跃载荷的大部分时间和频谱特征。这包括单个跳跃脉冲的不对称性和连续脉冲的近周期性质。因此，该模型为新一代合成窄带跳跃负载的发展提供了方向。在这些方法中，跳跃力的形状和频率内容可以在逐个跳跃的基础上轻松地改变，这更好地模拟了人类跳跃过程中现实中发生的事情。综合跳跃荷载可用于评估装配结构和音乐会场地等与之相关的土木工程结构的振动使用性能。
A novel mathematical modeling has been proposed to generate synthetic vertical force signal induced by a single person jumping. This model can replicate much of the temporal and spectral features of the real jumping loading more reliably than the existing half-sine models coupled with Fourier series analysis. This includes lack of symmetry of individual jumping pulses and near-periodic nature of consecutive pulses. The model therefore offers way forward as to the development of a new generation of synthetic narrow-band jumping loads. In these, the shape and frequency content of the jumping force can be changed easily on a jump-by-jump basis, which simulates better on what is happening in reality during human jumping. The synthetic jumping loading can be used in assessing vibration serviceability of civil engineering structures for which such dynamic excitation is relevant, such as assembly structures and concert venues.