For the pulley shown in the figure, determine the diameter of the four similar bolts needed to connect the shaft with the pulley via the coupling shown. 40 kN 700-mm diameter 300-mm diameter
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- Solve the problem. A 11-in. connecting rod in an engine connects the wrist pin of a piston at point A to the end of a second rod at point on the crankshaft. As the piston moves forward and back, the crankshaft is turned counterclockwise around point C. The stroke length of the engine is the distance that the piston travels (one way) with its cylinder. If the stroke length is 4 in., and the engine turns at 600 rpm, write a model representing the distance d (in inches) from A to the center of the crankshaft Cas a function of time t (in minutes). Assume that at t = 0, the piston is at its farthest point from the crankshaft. B B C C B A A stroke lengthA transmission shaft supporting a helical gear B and an overhung bevel gear D is shown in Fig. bearings, A and C. The pitch circle diameter of the helical gear is 450 mm and the diameter of the bevel gear at the forces is 450 mm. Power is transmitted from the helical gear to the bevel gear. The gears are keyed to the shaft. The material of the shaft is steel 45C8 The factors k, and k, of ASME code are 2.0 and 1.5 respectively. Determine the shaft diameter using the ASME code. 400 The shaft is mounted on two 400 400 270 250 210 640i ]640 1004. A machine shaft turning at 600 rpm is supported on bearings 30" apart. Twenty HP is supplied to the shaft through an 18" pulley located 10" to the right of the right bearing. The power is transmitted from the shaft through an 8" spur gear located 10" to the right of the left bearing. The pulley weighs 200 lb to provide some flywheel effect. The forces acting on the pulley and the gear are given in the diagram. The shaft material selected has an ultimate strength of 70,000 psi and a yield stress of 46,000 psi, determine: Reactions at the bearings b. Bending moment diagrams in the horizontal and vertical directions a. The necessary diameter in accordance with the ASME Code using Kh=1.5 and Kt = 1.0. points) с. Pulley Mt 525 lb Gear 191 lb Mt Forces on Gear 10" 20" 10" 348 lb W-200 lb 116 lb
- Q1: The arrangement of a transmission brake is shown in the figure. The arms are pivoted at O and, when force is applied at the end of the hand lever, the screw AB will rotate. The left-and right- hand threads working in nuts on the ends of the arms will move the arms together and thus apply the brake actuating force equally. A B 12cm The drum is 17.75cm diameter, and the angle subtended by each block is 90°. the friction material lining width is 4cm. Assuming a coefficient of friction for the braking surfaces that is equal to 0.30 Determine the force required by the screw AB to set the brake torque on the drum equal to 200 N-m. 17 75cm 12cm 46 35cm Torqueleft= TorqueRight= 97.40 N.m 6 35cm 102.60 N.m1 300N forces on the pliers? 300N What forces are exerted on the bolt at E in the figure below as a result of the 30 mm 70 mm PIED PAR 30 mm D 30 mm 30 mmSteel rod AB bonded to the brass rod BCD as shown below. The steel rod has a diameter of 50 mm while the brass rod has an outer diameter of 40mm with segment BC being hollow with an inner diameter of 20 mm. If the assembly is loaded as shown, solve for the a. magnitude of the internal torque in the steel section (TAB) b. maximum shear stress in the steel section (TAB) C. maximum shear stress developed in the whole assembly (Tmax) 0.60 kNm A 1.80 kNm 2.0m 2.0m 2.0m
- 2. A machine shaft turning at 600 rpm is supported on bearings 20" apart. Twenty HP is supplied to the shaft through a 20" pulley located 10" to the right of the right bearing. The power is transmitted from the shaft through an 8" spur gear located at the middle of the two bearing. The pulley weighs 300 lb to provide some flywheel effect. The forces acting on the pulley and the gear are given in the diagram. The shaft material selected has an ultimate strength of 70,000 psi and a yield stress of 46,000 psi, determine: Reactions at the bearings b. Bending moment diagrams in the horizontal and vertical directions а. C. The necessary diameter in accordance with the ASME Code using Kb =1.5 and Kt = 1.5. %3D Pulley Mt 525 lb Gear 191 lb Mt 10" 10" 10" Forces on Gear 348 lb W=300 lb 116 lbThe 500 N load is acting on the helical compression spring with 20 number of turns. The helical spring is having the mean diameter of 12cm,spring wire diameter is 6mm. Find the spring inside diameter. Select one: O a. 114 mm O b. 52mm O c. 150mm O d. 20mmA transmission shaft supporting a helical gear B and an overhung bevel gear D is shown in Figure. The shaft is mounted on two bearings, A and C. The pitch circle diameter of the helical gear is 450 mm and the diameter of the bevel gear at the forces is 450 mm. Power is transmitted from the helical gear to the bevel gear. The gears are keyed to the shaft. The material of the shaft is steel 45C8 (ou = 750 N/mm?). The factors kp and k; of ASME code are 2.0 and 1.5 respectively. Determine the shaft diameter using the ASME code. 400 400 400 270 250, 640 210 640 100
- A straight spline has 10 splines and is Fit B. The required major diameter, D, of this spline subject to a torque capacity per inch of length of spline of 600 lb-in is most likely: O 0.8 in O 2 in O 1.4 in O 1.7 inL length of the adjustable wrench in the figure; Choose a number from 152 to 252 mm that does not end with a zero. F force also; Choose from 122 to 292 N as a non-zero number. Find the torque and direction of the wrench applied to the bolt. ?Required information The shaft shown in the figure is machined from AISI 1040 CD steel. The shaft rotates at 1600 rpm and is supported in rolling bearings at A and B. The applied forces are F₁ = 1600 lbf and F2 = 640 lbf. A steady torque of 1600 lbf-in is being transmitted through the shaft between the points of application of the forces. ↑ i 3 in- -10 in- F₁ ↑ in F₂ -10 in- All fillets in R. -8 in inៗ → p'in 3 in in B -3 NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. What is the factor of safety against fatigue at infinite life? Use the Goodman failure criterion. (You must provide an answer before moving to the next part.) The factor of safety against fatigue at infinite life is