タケダ　マサカズ   Masakazu Takeda   武田　真和    所属   追手門学院大学  理工学部 機械工学科    職種   講師
発表年月日	2021/09
発表テーマ	粒子群上を走行する車両の振動特性と振動発生条件
会議名	年次大会
主催者	一般社団法人 日本機械学会
発表形式	その他
開催期間	2021～2021
発表者・共同発表者	渡邊 太朗,武田 真和,菅原 佳城
概要	In forestry work, vehicles such as heavy industry machines or tractors are used when they carry tools. It is necessary to grasp the behavior of the vehicle when they run on uneven ground. Gravel path is one of non-even ground, which can be modeled as group of particles. When the vehicle run on group of particles, vibration occurs on the vehicle that causes deterioration in safety and ride comfort. It is important to clarify the characteristic and occurrence condition of vibration. In this study, the particle method is used to analyze the vibration of a vehicle. Non-smooth DEM is used in among the particle methods. One of the reasons is short calculation time compared to DEM. By changing the speed of the vehicle and the number of particle layers, vibration characteristics, the occurrence conditions, and mechanisms are considered. Calculation result show that the amplitude increased as the rotation speed increased.