The below multi-diameter shaft transmits 2.25 kW of power when rotating at 1750 rpm. The load...

 

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The below multi-diameter shaft transmits 2.25 kW of power when rotating at 1750 rpm. The load acting on the gear is P and is found to be acting in a plane that is 20-deg from the vertical plane as shown in the figure. If the shaft is S.S. with a corrected fatigue strength of 200 MPa, ultimate and yield strengths of 700 MPa and 350 MPa, respectively, 1) Plot the bending moment diagrams acting on the shaft. Find the value and location of the maximum moment acting on the shaft 2) Find the Ma, Mm, Ta and Tm 3) Design the shaft for a factor of safety 1.5 (Find all of d1, d2, d3, and d4) assuming repeated moments and repeated torques. The diameters calculated at each respective location (d1 through d4) should satisfy the bending moments, torques and concentrated stresses as given below. Use at B1, B2, and C the following: Kt-2.5 ; Kts-1.7; q=0.5 Use at A: Kt = 4; Kts = 2.5;q=0.5 Assume Kf =Kfm and Kfs-Kfsm 4) Select the appropriate bearings to be installed at B1 and B2 and estimate the life time of each bearing for 10% probability of failure The below multi-diameter shaft transmits 2.25 kW of power when rotating at 1750 rpm. The load acting on the gear is P and is found to be acting in a plane that is 20-deg from the vertical plane as shown in the figure. If the shaft is S.S. with a corrected fatigue strength of 200 MPa, ultimate and yield strengths of 700 MPa and 350 MPa, respectively, 1) Plot the bending moment diagrams acting on the shaft. Find the value and location of the maximum moment acting on the shaft 2) Find the Ma, Mm, Ta and Tm 3) Design the shaft for a factor of safety 1.5 (Find all of d1, d2, d3, and d4) assuming repeated moments and repeated torques. The diameters calculated at each respective location (d1 through d4) should satisfy the bending moments, torques and concentrated stresses as given below. Use at B1, B2, and C the following: Kt-2.5 ; Kts-1.7; q=0.5 Use at A: Kt = 4; Kts = 2.5;q=0.5 Assume Kf =Kfm and Kfs-Kfsm 4) Select the appropriate bearings to be installed at B1 and B2 and estimate the life time of each bearing for 10% probability of failure