Design a rigid flange coupling to transmit a torque of 257N-m between two coaxial shafts. The shaftis made of alloy steel, flanges out of cast iron and bolts out of steel. Four bolts are used to couple theflanges. The shafts are keyed to the flange hub. The permissible stresses are given below:Shear stress on shaft =100MPaBearing or crushing stress on shaft =250MPaShear stress on keys =100MPaBearing stress on keys = 250MPaShearing stress on cast iron = 200MpaShear stress on bolts =100MPa Answer in Word please (iii) Diameter of Pins The number of pins (iv) Dimensions of Bushes Calculate the outeris usually 4 or 6. The diameter of the pins is diameter of the rubber bush by Eq. (9.50). It iscalculated by the following empirical equation,given by,0.5d%3DM, =-D; DNd =(9.52)N.Calculate the effective length of the rubber bushDetermine the shear stress in the pins by Eq. by the following relationship,(9.51).8M,T= -1, =D,n df DN(v) Dimensions of Keys Detemine the standardThe shear stress calculated by the above equation cross-section of flat key from Table 9.3. The lengthshould be less than 35 N/mm?. Also, determine the of the key in each shaft is I, . Therefore,bending stresses in the pins and confirm that it isWith the above dimensions of the key, checkthe shear and compressive stresses in the key byEqs (9.27) and (9.28) respectively.within limit. DESIGN PROCEDURE FOR FLEXIBLE COUPLINGThe basic procedure for finding out the dimensionsof bushed pin type flexible coupling consists of thefollowing steps:The torsional shear stress in the hub can becalculated by considering it as a hollow shaftsubjected to torsional moment M. The inner andouter diameters of the hub are d and d, respectively.The torsional shear stress in the hub is given by,(i) Shaft Diameter Calculate the shaft diameterby using the following two equations:60x10 (kW)16 M,and T=-M,rM, =2πηJn(d-dt)|(ii) Dimensionsof Flanges CalculatetheJ =32dimensions of the flanges by the followingempirical relationships:2d%3DThe shear stress in the flange at the junction withthe hub is calculated by Eq. (9.45). It is given by,1.5d%3DD = 3d to 4dt = 0.5d%3D1%3D%3Dt = 0.25d%3D2

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Design a rigid flange coupling to transmit a torque of 257N-m between two coaxial shafts. The shaft is made of alloy steel, flanges out of cast iron and bolts out of steel. Four bolts are used to couple the flanges. The shafts are keyed to the flange hub. The permissible stresses are given below: Shear stress on shaft =100MPa Bearing or crushing stress on shaft =250MPa Shear stress on keys =100MPa Bearing stress on keys = 250MPa Shearing stress on cast iron = 200Mpa Shear stress on bolts =100MPa Answer in Word please

Design a rigid flange coupling to transmit a torque of 257N-m between two coaxial shafts. The shaft is made of alloy steel, flanges out of cast iron and bolts out of steel. Four bolts are used to couple the flanges. The shafts are keyed to the flange hub. The permissible stresses are given below: Shear stress on shaft =100MPa Bearing or crushing stress on shaft =250MPa Shear stress on keys =100MPa Bearing stress on keys = 250MPa Shearing stress on cast iron = 200Mpa Shear stress on bolts =100MPa Answer in Word please

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 3.3.5P: A prospector uses a hand-powered winch (see figure) to raise a bucket of ore in his mine shaft. The...

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