Abstract
The purpose of this study is to investigate the shock attenuation properties of long pile synthetic turf by modeling and simulation method. Three types of specimens which have different hardness were used for comparing the shock attenuation properties. The hardness was controlled by the composite ratio of infill material, i.e. normal type specimen was formed by mixing the sand and the rubber chip for volume ratio at 1:1, 2:1 for hard and 1:2 for soft. And five types of test feet were used for incorporating the area parameter to the model. To identify the model parameters, multi-intensity multi-area impact tests were performed in various impact intensities and various impact areas. Because of the structure of long pile synthetic turf, the acquired data from the impact tests were unstable. Therefore, ten trials were performed in each condition for reducing the variation of measurements. As a result, the impact forces could be reproduced by the model and the shock attenuation properties of long pile synthetic turf in various conditions were estimated by simulation. However, it may be necessary to rebuild the model for improving the accuracy.
