犂体に関する二次元的研究 (II)
犂体上への〓土上昇について
1956 年 18 巻 1 号 p. 23-26
詳細
1956 年 18 巻 1 号 p. 23-26
1. The force tangential to two dimensional curve of plow body is transmitted to unplowed soil as it's absolute value, and leave vertical force on the surface of plow body.
2. According to upper cosideration, transmitted force to unplowed soil will be calculated by differential equation (3).
3. As to simple curved plow body, the force P will be determined by equation (4), and shearing conditions of unplowed part of soil are simultaneous equations (4) and (5), the latter is regarded in report (1).
4. As to connected curved plow body, P will be computed by epuation (6), but result is omitted.
5. An illustration of calculation as to simple curved plow body i presented. As results of calculations (Fig2, Fig3), the height of Furrow sliding upon plow body increase as plowing depth h, cohesion c, and share angle a increase respectively. This considerations explain some items in actual plowing.
