Question 3 The stepped shaft shown must transmit 40 kW. Knowing that the allowable shearing stress...
The shafts of the pulley assembly shown are to be redesigned. Knowing that the allowable shearing stress in each shaft is 8.5 ksi, determine the smallest allowable diameter (in.) of shaft AB. 6.8 kipin. 10.4 kipin. С 3.6 lin in 100 6.8 kipin. Collapse 10.4 kip. in. С 3.6 kip. in. 72 in. B А 48 in.
PROBLEM 3.17 The solid shaft shown is formed of a brass for which the stress concentrations, determine the smallest diameters daB and T 1200 N T-400N- allowable shearing stress is 55 MPa. Neglecting the effect of dac for which the allowable shearing stress is not exceeded. 50 mm BC
A hollow shaft is to transmit 20 kW at 300 rpm. The loading is such that a maximum bending moment of 1000 Nm is induced in the shaft, together with an additional axial thrust of 15 kN. The shaft is supported on bearings 1500 mm apart. The values of shock and fatigue factors in torsion and bending (Kt and Kb) are 1.25 and 1.75 respectively. The inside diameter is 0.8 times the outside diameter. Determine the outer diameter of the...
A hollow shaft consisting of a steel tube of 50-mm outer diameter is to transmit 250 kW of power while rotating at a frequency of 30 Hz. Determine - (7 points) (a) the tube thickness that should be used if the shearing stress is not to exceed 100 MPa. (3 points) (b) since in this simplified design calculation, the only stress considered is shear stress exerted on the shaft due to torques. Without taking into account of how power is...
Determine the largest permissible distributed load w for the beam shown, knowing that the allowable normal stress is +80 MPa in tension and -100 MPa in compression. Round the final answer to one decimal place.) 60 mm t0 20 mm 02 m 0.2 m kN/m The largest permissible distributed load w for the beam shown is
Fig. 14.17 A line shaft is to transmit 30 kW at 160 r.p.m. It is driven by a motor placed directly under it by means of a belt running on alm diameter pulley keyed to the end of the shaft. The tension in the tight side of the belt is 2.5 times that in the slack side and the centre of the pulley over-hangs 150 mm beyond the centre line of the end bearing. Determine the diameter of the shaft,...
ta. (25 points) Using an allowable shearing stress of 5 ksi, design a solid shaft that can transmit a 12 hp at a speed of 1800 rpm. Note(1) : Power -2 fT where f is frequeney (Cycles/second) and T is torque (in-b) Note(2): 1hp 550 ft-lb-6600 in-lb
75 mm 30 mm D A torque of magnitude T is applied to shaft AB of the gear train shown. Knowing that the allowable shearing stress is Talow in each of the three solid shafts, determine the required diameter of (a) shaft AB. (b) shaft CD. C) shaft EF. T B 60 mm 25 mm T= 122 N'm TAllow 61 MPa Determine the torque in shaft CD in Nºm- [Select) Determine the torque in shaft EF in Nm = [Select)...
QUESTION 11 Knowing that for the extruded beam shown in the figure below, the allowable stress is 120 MPa in tension and 150 MPa in compression. 125 mm N-A 50 mm 125 mm 150 mm The centroid () measured from bottom of cross-section is: [mm.] 114.7 138.25 151.32 163.17 NI QUESTION 12 The moment of inertia () around neutral axis (N.A.) is: [m 122.16x 10 5 165.56x 10 5 212.45x 10 6 310.11x 10 5
A pair of bevel gears is required to transmit 11 kW at 500 r.p.m. from the motor shaft to another shaft, the speed reduction being 3 : 1. The shafts are inclined at 60º. The pinion is to have 24 teeth with a pressure angle of 20º and is to be made of cast steel having a static stress of 80 MPa. The gear is to be made of cast iron with a static stress of 55 MPa. The tooth...