B8 多段階衝撃試験によるロングパイル人工芝の緩衝特性(シューズおよびサーフェス)

概要

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The purpose of this study is to investigate an applicability of multi-intensity impact test and viscoelastic modeling proposed in previous studies to a long pile synthetic turf and considering the shock attenuation of the long pile synthetic turf by using simulation method. The multi-intensity impact tests and the parameter identification method of the exponential function type nonlinear Voigt model were performed to two kinds of long pile synthetic turfs with different hardness. The hardness of these two specimens were controlled by changing the ratio of filling materials, i.e. sand and rubber chip. After a parameter identification of the model, shock attenuation properties were considered with two kinds of synthetic turf and one of the popular polyurethane synthetic surface certified by IAAF. Although the identification accuracy of some trials were not so high, it is possible to apply the parameter identification method and the estimation of shock attenuation by using the simulation to the long pile synthetic turf. Because the low accuracy should be improved by modifying the testing conditions such as the impact area, the stability of test foot and the uniformity of surface condition of the synthetic turf.
2011-10-30