トラクタ座席振動の測定と評価　Ｉ　　人工悪路の製作と人工悪路による座席振動測定

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タイトル別名
  • Measurement and Evaluation of Tractor Ride (1)
  • トラクタ ザセキ シンドウ ノ ソクテイ ト ヒョウカ 1 ジンコウ アクロ
  • 人工悪路の製作と人工悪路による座席振動測定

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A couple of artificial rough tracks were theoretically designed, which are to be made use of in researches on the improvement of the tractor ride. The profile of the tracks was so determined, that the roughness in general is middle poor according to the road classification criteria of BSI, and that the power spectral density of the surface undulation is expressed with a simple formula. The autoregression method was applied in the stage of the computer generation of the profile data.<br>Test runs of a tractor on the artificial tracks showed that the tracks as an input device of vibration to tractor secure high consistency, and that the power spectral density of the vibration acceleration at the seat attaching point of tractor on the tracks shows a similar tendency to that obtained in seat test runs on a gravel road. After the appropriateness of the application of the tracks in vibration tests was verified, a certain number of tractors and seats were offered to ride tests. So-called suspension seats were positively evaluated, but also noticed was the significance of the appropriate adjustment of the spring in accordance with the body weight of drivers.

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