Design and draw a cast iron flange coupling for a mild steel shaft transmitting 80 kW at rpm with the following specifications: Q1: Allowable shear stress in the shaft = 400 MPa Permissible angle of twist < 1° in a length of 20 diameters Allowable shear stress in the coupling bolts = 30 MPa Rigidity modulus of shaft materials = 85 GPa Allowable shear stress for hub material = 15 MPa You may adopt, width of key = 25 mm, thickness of key = 14 mm You may also consider that the shaft and key are made of the same material. Four number of bolts are to be used in the coupling. Find out the diameter of the shaft required main dimensions of the flanges and the key. Adopt suitable dimensions. Draw a neat sketch for the flange coupling with the designed dimensions.

Design and draw a cast iron flange coupling for a mild steel shaft transmitting 80 kW at rpm with the following specifications: Q1: Allowable shear stress in the shaft = 400 MPa Permissible angle of twist < 1° in a length of 20 diameters Allowable shear stress in the coupling bolts = 30 MPa Rigidity modulus of shaft materials = 85 GPa Allowable shear stress for hub material = 15 MPa You may adopt, width of key = 25 mm, thickness of key = 14 mm You may also consider that the shaft and key are made of the same material. Four number of bolts are to be used in the coupling. Find out the diameter of the shaft required main dimensions of the flanges and the key. Adopt suitable dimensions. Draw a neat sketch for the flange coupling with the designed dimensions.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Design and draw a neat sketch of a cast iron protective type flange coupling to transmit “P” kW at “N” rpm. from a turbine generating n electric motor to a compressor. The service factor may be assumed as 1.35. The following permissible stress may be used: Shear stress for shaft, bolt and key material = 40 MPaCrushing stress for bolt and key = 80 MPaShear stress for cast iron = 8 Mpa Speed N in Rpm = 200Power P in kN = 16
H.W: Design a cast iron rigid type flange coupling to transmit 20 kW at 900 r.p.m. from an electric motor to a compressor. The following permissible stresses may be used: Shear stress for shaft, bolt and key material =40 MPa Crushing stress for bolt and key = 80 MPa %3D Shear stress for cast iron =8 MPa Draw a neat sketch of the coupling.
3) A flange coupling is to connect two 60mm shafts. The hubs of the coupling are 120mm, 100mm thick, & the flange webs are 20 mm thick. Six M16 bolts fasten the flange from a 165 bolt circle. The keyway is 15mm shorter than the hub’s thickness & the key is 15mm x 15mm. The coupling transmits 45kW @ 450rpm. The yield point in shear for all materials is half of its yield point in tension or compression. Yield tensile strength is 0.75 of ultimate strength of the materials. The Sult is 448N/mm2 . Find: (a) the shear stress in key; (b) the bearing stress in key; (c) the shear stress in bolts; (d) bearing stress in flange.
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 solution
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
I want right solution plz solve if you know 100% flange coupling connects two 50 mm diameter lengths of commercial shafting. The coupling flanges are bolted together with four bolts of the same material as the shaft. The bolts are set in clearance holes. The diameter of the bolt circle is 240 mm and the flange thickness is 22 mm, Determine the minimum bolt diameter required to transmit the same torque that the shaft can transmit. What power may be transmitted at 200 rev/ min under steady load conditions?
6. 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 [Ans. d = 25 mm; D = 50 mm]
A mild steel shaft has to transmit 75 kW at 200 rpm. Design a cast Iron flange coupling for the shaft. The allowable stresses are Shear stress for the shaft and keys 40 N/mm²Shear stress for bolts = 28 N/mm²Shear stress for C.I. coupling = 20 N/mm² Take wearing stress as twice the shear stress value and number of bolts for coupling as 6.
3. A motor is connected by a belt to pulley B. T, is the tight-side tensile force equal to 1800 N. The shaft spins at a constant speed, 650 rpm. The power delivered by the motor is 12.6 kW. On pulley A, connected to the load, the slack side of the belt has a tension equal to th of the tight side. b T T, B d shaft Dimensions are as follows: da 200 тm 300 тт | 250 тm |180 тm | 250 тm 26 тm dB dahaft a We analyzed a problem similar to this on Test 01 using static failure theories. Is this strictly correct? Because the shaft is spinning, would not a material particle see a time-varying reversal of the the bending stress as in the R.R. rotating beam test? Would a particle see a reversal of the torsional shear stress? Assume Sut = 370 MPa and Sy = 300 MPa. Ignore Marin factors. Ignore stress concentrations. Ignore direct shear stress (that due to V). Find the safety factors with respect to fatigue and yielding. Be guided by section 6-14 on combined loading.
TORSION A solid steel shaft 4 feet long is stressed to 18 ksi at 18 Hz when twisted through 3 degrees. Use G = 12 x 10^6 psi. DETERMINE: A. Compute the shaft diameter (in inches) B. the torque applied in the shaft (in lb-ft). C. What power (in Horseposer) can be transmitted by the shaft? PROVIDE FBD THANK YOU
Q5: A steel shaft is to transmit a stable torque of 1400 Nm to the steel spur gear through a Type B square end key with the dimensions L=140 mm and b=14 mm. What should be minimum height of the keyto transmit the power safely. The allowable bearing stress is 90 MPa.
A Hollow power transmission shaft of length ‘L’ 1103 mm, outer diameter ‘D’ 73mm and inner diameter 'd' 50. is required to transmit a power of P 60kW at a speed of 2950rpm. The modulus of rigidity of hardened carbon steel, which the shaft is made of, is 79.5 GPa Calculate the angle of twist of the above stating your answer in degrees?