A solid circular drive shaft connects a motor to gears B and C. The drive shaft is steel (G= 66 GPa) with a diameter of d=35 mm. 600 N-m A 200 N-m (1) B (2) 100 mm 300 mm
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- The four gears shown are attached to a steel shaft that is rotating at 2 Hz. Gear B supplies 70 kW of power to the shaft. Of that power, 20kW are used by gear A, 20 kW by gear C and 30kW by gear D. G=83 GPa for steel -20KW JOKN -20kw -30kW 2m 1.5m 1.5m B (a) If a uniform shaft diameter of 125 mm B speci fied, detenmine the angle of rotation of A relative to D. O f segment Co is to be replaced lay a hollaw Shaft with an inside diameter of 80 mm, what is the outside diameter if the stress is not to excced 70 MPa.2. A steel shaft rotating at 600 rpm is supported by two bearings as shown. E=30 Msi, d=1.0" (inch), L₁=24.0" (inches), L=42" (inches), W₁-50 lb, Neglect the weight of the shaft. "The design is acceptable." True ? Show details. or False Diameter d W₁A 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 ]640 100
- A 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 400 The shaft is mounted on two 400 400 270 250 ]640 210 640 The factors k, and k, of ASME code are 2.0 and 1.5 respectively. Determine the shaft diameter using the ASME code. 100A 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 100A horizontal nickel steel shaft shown in the below Figure rests on two bearings, A at the left and B at the right end and carries two gears C and D located at distances of 250 mm and 400 mm respectively from the centre line of the left and right bearings. The diameter of the gear C is 600 mm and that of gear D is 200 mm. The distance between the centre line of the bearings is 2400 mm. The shaft transmits 20 kW power at 120 r.p.m. The power is delivered to the shaft at gear C and is taken out at gear D in such a manner that the tooth force Ftc of the gear C and FtD of the gear D act vertically downwards. The gear C and D weighs 950 N and 350 N respectively. The combined shock and fatigue factors for bending and torsion may be taken as 1.5 and 1.2 respectively. (1) Determine the reactions acting on the bearings A and B (ii) Determine the torque acting on the shaft (ii) Determine the maximum moment acting on the shaft (iv) Design a suitable shaft, if the working shear stress is 56 MPa C D…
- A horizontal nickel steel shaft shown in the below Figure rests on two bearings, A at the left and B at the right end and carries two gears C and D located at distances of 250 mm and 400 mm respectively from the centre line of the left and right bearings. The diameter of the gear C is 600 mm and that of gear D is 200 mm. The distance between the centre line of the bearings is 2400 mm. The shaft transmits 20 kW power at 120 r.p.m. The power is delivered to the shaft at gear C and is taken out at gear D in such a manner that the tooth force Fic of the gear C and FID of the gear D act vertically downwards. The gear C and D weighs 950 N and 350 N respectively. The combined shock and fatigue factors for bending and torsion may be taken as 1.5 and 1.2 respectively 1) Determine the reactions acting on the bearings A and B(3) A mechanism consists of two flexible shafts: shaft1 and shaft 2 which are connected by gear I and gear 2. Each shaft is fixed on one end at a fixed support. Gear 1 J.N Fored Support Shaft 1 Fied Support Shaft 2 Gear 2 length of shaft 1: 1 = 0.3 m; length of shaft 2: 1= 0.2 m; diameter of shaft 1 and shaft 2: d=0.01m; gear number N-48; gear number Ny= 24; density of shaft I and shaft 2 material p = 6000 kg/m³. the two gears have moment of inertia J 4 10 kg m², and J;= 1-10* kg m² Determine the equivalent moment of inertia, Jeg, of the system at the coordinate Oj shown in the figure.A horizontal nickel steel shaft shown in the below Figure rests on two bearings, A at the left and B at the right end and carries two gears C and D located at distances of 250 mm and 400 mm respectively from the centre line of the left and right bearings. The diameter of the gear C is 600 mm and that of gear D is 200 mm. The distance between the centre line of the bearings is 2400 mm. The shaft transmits 20 kW power at 120 r.p.m. The power is delivered to the shaft at gear C and is taken out at gear D in such a manner that the tooth force Fic of the gear C and FID of the gear D act vertically downwards. The gear C and D weighs 950 N and 350 N respectively. The combined shock and fatigue factors for bending and torsion may be taken as 1.5 and 1.2 respectively. (iii) Determine the maximum moment acting on the shaft
- The solid steel shaft is supported by the frictionless customer on D and E. This system The mile provided 5 kW of power in w dev / second and was connected to a motor at C. wwww ww www ww ww www wwwm www w A and B If gears get primary 2 kW and 3 kW, determine the minimum shaft diameter. w rotation speed and The safety shear stress is known and is included in the table below. pictures. wwww ww wwwwwwwww www wwwwww wwwwwwww wwwwwwwww w(cycle/second) = 100 tem(Mpa) = 40 3 kW 5 kW 2 kW A D B E C _3. An 8-m steel shaft rotating at 180 rpm has 70kW applied at a gear that is 3.0m from the left end where another 60kW are applied. The shaft in between the two gears is solid with diameter=40mm. At the right end, 80kW are removed and another 50kW leaves the shaft at 3.60m from the right end. The shaft is hollow between these gears with outside diameter=80mm and inside diameter=70mm. The shaft between the 7OKW and 50kW is hollow with outside diameter=60mm and inside diameter=50mm (a) Find the stresses in each shaft. (b) Determine the angle (in radians) by which one end of the shaft lags behind the other end. Use G=83GPa. 4. Draw the shear and moment diagram and determine the maximum shear and the maximum moment and their location. 5 kN/m A 4.0 m 6.0 m 2.0 m 3/4 0..3:35 PM Wed Dec 15 7 51% A power transmission shaft is to carry a steady 30 horsepower while rotating at 1000 rpm. Specify a suitable diameter for the solid circular shaft if it is to be made from AISI 1020 cold-drawn steel. Use Appendix A-2 for preferred size. 61