Estimation of coefficient of friction between flange and rail utilizing vehicle dynamics simulation (Investigation based on roller-rig test with different lubrication condition) oleh Yohei MICHITSUJI, Yosuke ICHIYANAGI, Akira MATSUMOTO, Yasuhiro SATO, Hiroyuki OHNO, Seigo OGATA, Masuhisa TANIMOTO, Tomoki FUKUSHIMA, Takuya MATSUDA, Takanori MATSUMI