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0-1 (25 pts) An engine with three cylinders in-line have successive cranks at 240°C and pitched at 350 mm apart. The ef...
Q-1 (25 pts) An engine with three cylinders in-line have successive cranks at 240°C and pitched at 350 mm apart. The effective reciprocating and the connecting rod is 450 mm long. If the engine runs at 955 rpm, ,mass for each cylinder is 12 kg, the crank radius is 100 mm a. Show that primary and secondary forces are balanced b. Determine the reactions at the end bearings A and B due to primary couple effects. c. State the angular...
Q-1 (25 pts) An engine with five cylinders in line have successive cranks aw apart. The effective reciprocating mass ea eigcranks at 144 C and pitched at 350 mm bies, (you arone oreach cylinder is 2 kt, the crank radius is 105 mm and the connecting rod is 420 mm long, balance magnitude of unbalanced magnitude Txamine the balance of primary and secondary forces and as balanced or unbalanced, and if unbalanced state the Assume the end bearings are symmetrically...
Q-1 (25 pts An engine with five cylinders in-line have successive cranks apart. The effective reciprocating mass for each cylinder is 2 kg- the connecting rod is 420 mm long. balance at 144"C and pitched at 350 mm ig.Eamine the balance of primary and secondary forces and state as balanced or unbalanced, and if unbalanced state the magnitude of unbalanced magnitude. Assume the end b earings are symmetrically located at 1600 mm apart. The firing order is : 1, 5,...
Q-1 (25 pts) An engine with five cylinders in-line have success apart. The effective reciprocating mass for each cylin ive cranks at 144"C and pitched at 350 mm der is 2 kg, the crank radius is 105 mm and mm long. Examine the balance of primary and secondary forces and ed to state as balanced or unbalanced, and if unbalanced state the the connecting rod is 420 couples. (you are expect magnitude of unbalanced magnitude. Assume the end bearings are...
Problem 1 (25 Points) Two solid steel (6-80 GPa) shafts are connected by the gears shown. Shaft (1) has a diameter of 45 mm, and shaft (2) has an outside diameter of 55 mm and wall thickness 4 mm. Assume that the bearings shown allow free rotation of the shafts. If a 400 N-m torque is applied at gear D, determine (a) the maximum shear stress magnitudes in each shaft. (b) the angles of twist ф, and ф (c) the...
Q-1 A mechanism, as shown in Fifure Q-1, has the dimensions: OA-a 200 mm; AB a 1500 mm; BC- 600 mm; CD OE 1350 mm; and BE- b4-400 mm. as 500 mm; a) Determine the number of total and obvious instant centers and locate (show on the given figure with the necessary construction lines) the instant centers 13, and Is. [12 pts.] b) If t the crank OA- a rotates uniformly at n 120 rpm (c.w.) determine; i) The velocities...
2. Fig.2 shows an epicyclic gear train in which the internal teeth on the gears A and B have the same diametral pitch. Gear A has 88 teeth and gear B has 100 teeth both internally and externally. The sun-wheel C which is keyed to shaft P has 44 teeth and the pinion E keyed to shaft R has 25. There are floating compound planet wheels F, G. The power input to shaft R is 8 kW at 1440 rev/min....
Problem 1: A shaft, with a diameter of 43 mm, is shown below. On the right-hand side at location D a wheel has a force F of 4824N applied. The diameter of this wheel is 150 mm. The torque produced by F is transmitted through the entire shaft to location A where the torque is reacted. There are no other constraints at location A. Bearings, are located at B and C, and provide radial constraint. The bearing at B also...
Q-4 (25 pts A uniform bar of length (L), cross sectional area (A) and mass (m) is free to rotate about a frictionless hinge at "O" in a horizontal plane. At the instant shown its angular velocity is (w) rad/sec clockwise and the applied torque (T) is clockwise. For the instant determine: a) The reactions at the hinge "O b) The internal forces (Shear force V, axial force F) in the middle of the bar (xeL/2 from hinge "O") Hint:...
1. The countershaft shown in the Fig QI has two spur gears mounted on it with teeth cut with a 20 pressure angle. The shaft (grooved) is to be made of cold-drawn AISI 1040 steel having Sut= 779 MPa and S,-593 MPa, an elongation of 19% and HB-262. You are asked to size the shaft for safe operation according to DE-Eilliptic criterion by using a factor of safety of 2.5 and a reliability of 99 percent. The stress-concentration factors for...
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