Problem No 1 Reduction Of Masses And Forces All Members Of Piston Mechanism See Figure Move In Vertical Plane This P 1 (84.64 KiB) Viewed 29 times
Problem No 1 Reduction Of Masses And Forces All Members Of Piston Mechanism See Figure Move In Vertical Plane This P 2 (84.64 KiB) Viewed 29 times
Problem No 1 Reduction Of Masses And Forces All Members Of Piston Mechanism See Figure Move In Vertical Plane This P 3 (12.48 KiB) Viewed 29 times
Problem No. 1 Reduction of masses and forces All members of piston mechanism (see Figure) move in vertical plane (this plane is parallel to the plane of Figure). Besides, in Figures 0, 2, 4, 6 and 8 piston's axis is vertical, but in Figures 1, 3, 5, 7 and 9 piston's axis is horizontal. Resistance force F is applied to piston only during those motion stages, which correspond to reduction of chamber's volume. But in motion stages, corresponding to increase of chamber's volume, it is considered that force F = 0. Moment of inertia of wheel 1 is equal to J. Weights of mechanism's members are as follows: connecting-rod 2 - G2; piston 3 - G3. Connecting-rod 2 is assumed as a homogeneous rod with length / and weight G2. To draw mechanism in position corresponding to the given value of angle a. For the given mechanism position it is necessary to reduce all masses and forces to wheel 1 which angular velocity is assumed as o. Variant from the table is taken in accordance with the penultimate figure of student code, but drawing - in accordance with the last figure of student code. Variant J(kgm G(N) F(KN) 1 (m) OA (m) 0 30° 10 50 20 1,0 0,6 0,20 1 60° 15 75 40 1,5 0,8 0.25 2 90° 20 100 60 2,0 1,0 0,30 3 120° 25 125 80 2,5 1,2 0,35 4 150° 30 750 100 3,0 1,4 0,40 5 180° 35 175 120 3,5 1,6 0,45 6 210° 40 200 140 1,8 0,50 7 240° 45 225 160 4.5 2,0 0.53 8 270 50 250 180 5,0 2,2 0,60 300 55 275 200 0.65 a GN 4,0 5.5 24
-F 3- 2- a A 0 Fig. 4
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