4. Design a cast iron protective flange coupling to connect two shafts in order to transmit 7.5 kW at 720 r.p.m. The following permissible stresses may be used: Permissible shear stress for shaft, bolt and key material 33 MPa Permissible crushing stress for bolt and key material = 60 MPa Permissible shear stress for the cast iron = 15 MPa

4. Design a cast iron protective flange coupling to connect two shafts in order to transmit 7.5 kW at 720 r.p.m. The following permissible stresses may be used: Permissible shear stress for shaft, bolt and key material 33 MPa Permissible crushing stress for bolt and key material = 60 MPa Permissible shear stress for the cast iron = 15 MPa

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter3: Torsion

Section: Chapter Questions

Problem 3.7.8P: A tubular shaft being designed for use on a construction site must transmit 120 kW at 1,75 Hz, The...

See similar textbooks

Similar questions

Repeat Problem 11.2-3 assuming that R= 10 kN · m/rad and L = 2 m.
2. Design a muff coupling to connect two shafts transmitting 40 kW at 120 r.p.m. The permissible shear and crushing stress for the shaft and key material (mild steel) are 30 MPa and 80 MPa respectively. The material of muff is cast iron with permissible shear stress of 15 MPa. Assume that the maximum torque transmitted is 25 per cent greater than the mean torque
A shaft is to be fitted with a flanged coupling having 8 bolts on a circle of diameter 150 mm. The shaft may be subjected to either a direct tensile load of 400 kN or a twisting moment of 18 kN·m. If the maximum direct and shearing stresses permissible in the bolt material are 125 MPa and 55 MPa respectively. Find the minimum diameter of the bolt required. Assume that each bolt takes an equal share of the load or torque.
Design a typical rigid flange coupling for connecting a motor and a centrifugal pump shafts. The coupling needs to transmit 15 KW at 1000 rpm. The allowable shear stresses of the shaft, key and bolt materials are 60 MPa, 50 MPa and 25 MPa respectively. The shear modulus of the shaft material may be taken as 84GPa. The angle of twist of the shaft should be limited to 1 degree in 20 times the shaft diameter. Note: show complete handwritten solution
A pulley is connected to a power transmission shalt of diameter d by means of a rectangular sunk key of width w and length I. The width of the key is taken as d/4. For full power transmission, the shearing strength of the key is equal to the torsional shearing strength of the shal: The ratio of the length of the key to the diameter of the shaft (l/d) is
A shaft is to be fitted with a flanged coupling having 8 bolts on a circle of diameter 150mm. the shaft may be subjected to either a direct tensile load of 400kN or a twisting moment of 18kN-m. if the maximum direct and shearing stress permissible in the bolt material are 125MPa and 55MPa respectively, find the minimum diameter of the bolt required.
The disc clutch of an automobile is carried on a 2-inch 6-splined shaft and not to slide under load. The nominal dimensions are as follows: b = 0.25 D; t = 0.075 D and d = 0.85 D. The hub length of 150 % of shaft diameter. Determine the total horsepower transmitted at 3,600 rpm, if the yield strength of the shaft is 1,400 psi
A hollow shaft for marine applications has outer and inner diameters of 400 mm and 200 mm respectively and transmits 8000 kW at 100 r/min. If this shaft is connected to a similar shaft, 1 m long, through a 10-bolt rigid flange coupling, determine the minimum standard bolt diameter if the pitch circle diameter of the coupling is pcd = 450 mm and the allowable shear stress in the bolts should not exceed 55 MPa.1.Determine the equivalent torsional stiffness of the shaft assembly.
Two short shafts having identical diameters of 35 mm and rotating at 1000 rpm are connected by a flange coupling having five bolts with a 100 mm bolt circle. The design shearing stress of the bolt is 12 MPa and design compressive stress of the flange is 15 MPa. a. What is the power in kW transmitted by the short shaft? b. What is the torque transmitted by the shaft in lb-in? c. What diameter in mm of bolt should be used? d. How thick should the flange be in mm?
Design a muff coupling to connect two shafts transmitting 40 kW at 120 r.p.m. The permissibleshear and crushing stress for the shaft and key material (mild steel) are 30 MPa and 80 MParespectively. The material of muff is cast iron with permissible shear stress of 15 MPa. Assumethat the maximum torque transmitted is 25 per cent greater than the mean torque
Two pipes were connected by a flanged bolt coupling. The material properties are as follows: For outer bolts, 12 pieces, 16 mm diameter, on a mean radius of 150 mm, G = 28 GPa. For the inner bolts, 8 pieces, 12 mm diameter, on a mean radius of 100 mm, G = 20 GPa. Determine the total torque of the system if the shearing stress is limited to 30 MPa in the bolts. (Draw also the FBD) with complete solution
Problem: 1 A line shaft rotating at 55 RPS is to transmit 28 kW. The shaft may be assumed to be made of mild steel with an allowable shear stress of 85 MPa. Determine the diameter of the shaft, neglecting the bending moment on the shaft.