Data/hora: 03/06/2024 04:24:04

Provedor de dados: | 19
País: | Japan

Título:

被けん引自由転動剛性車輪の法線応力予測モデル

Radial Stress Prediction Model on Towed Rigid Wheel

Autores: | 大友, 功一; 岸本, 正; OHTOMO, Koichi; KISHIMOTO, Tadashi.
Data: | 1999-05
Ano: | 1999
Palavras-chave: | 自由転動車輪; 剛性車輪; 法線応力; 土壌応力; 応力モデル; Towed wheel; Rigid wheel; Radial stress; Soil stress; Stress model.
Resumo: | 自由転動剛性車輪の法線応力予測モデルを提案し, 室内実験でその予測精度を検討した。法線応力の予測には Bekker の応力式を導入した。この応力に関する速度の影響分は Pope の速度モデルを組み込むことで対応した。スキッドの予測には剛性車輪の実験から得た経験式を用いた。またモデル化していない接線応力は, 接線応力と法線応力との比から実験式を求めて予測した。土壌の復元現象による応力は未解析で, このモデルに組み込むに至っていない。広範囲に荷重を変えて実証実験を行ない, 計算値と実測値でよい一致が見られた。 A prediction model of a normal stress acting on a towed rigid wheel was proposed. Model accuracy was discussed with the comparison of the calculated and measured data. Pope's model including a sinkage rate was coupled to the Bekker's stress equation to evaluate its effect. Wheel skid was predicted with an empirical equation obtained from experiment of the towed rigid wheel. A tangential stress which has not been modeled was predicted from the tangential to the normal stress ratio and wheel contact angles. The stress produced by soil rebound under the wheel has not been analyzed. The normal stresses calculated from the model showed the good agreement with the experimental data except the section where the soil rebound occurred.
Idioma: | Japonês
Identificador: | http://ir.obihiro.ac.jp/dspace/handle/10322/2954
Editor: | 農業機械学会
Formato: | application/pdf
Fonte: | 農業機械学会