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      • 進入角 및 剪斷角의 變化에 따른 옥수수줄기의 剪斷 特性

        許潤根,明炯洙 충남대학교 농업과학연구소 1984 農業技術硏究報告 Vol.11 No.2

        Shearing characteristics of cornstalks were investigated under quasi-static conditions at various knife approach angles and shear angles in order to determine their importance to the cutting action of mowers. Corn variety used in this study was pioneer that was grown in the field of Chungnam National University. The results obtained were as follows: 1. The shearing process had two shearing stages in cornstalks, which was different from those of rice and other forage crops due to the hard crust. 2. Force and energy of shear were decreased progresively with height of the cornstalks, 3. The minimum shear force occured at shear angle of about 60 and approach angle of about 10 4. The condition of minimum shear energy coincides with that of minimum shear force. 5. Effects of knife approach angles were more significant than those of shear angle for force and energy of shear.

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