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8.15 (B). A solid shaft of 75 mm diameter and 4 m span supports a flywheel of weight 2.5 kN at a point 1.8 m from one support. Determine the maximum direct stress produced in the surface of the shaft when it transmits 35 kW at 200 rev/min. [65.9 MN/m².]

8.15 (B). A solid shaft of 75 mm diameter and 4 m span supports a flywheel of weight 2.5 kN at a point 1.8 m from one support. Determine the maximum direct stress produced in the surface of the shaft when it transmits 35 kW at 200 rev/min. [65.9 MN/m².]

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
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Hello, i have 5 questions in mechanics of materials that I need the solution for, I already have the final results but I just need the steps for the answer, Can you please help me? I will submit the pictures showing the problems. 

8.15 (B). A solid shaft of 75 mm diameter and 4 m span supports a flywheel of weight 2.5 kN at a point 1.8 m from one support. Determine the maximum direct stress produced in the surface of the shaft when it transmits 35 kW at 200 rev/min. [65.9 MN/m².] 8.14 (B). Calculate the minimum diameter of a solid shaft which is required to transmit 70 kW at 600 rev/min if the shear stress is not to exceed 75 MN/m². If a bending moment of 300 Nm is now applied to the shaft find the speed at which the shaft must be driven in order to transmit the same horsepower for the same value of maximum shear [630 rev/min.] stress.
Transcribed Image Text:8.15 (B). A solid shaft of 75 mm diameter and 4 m span supports a flywheel of weight 2.5 kN at a point 1.8 m from one support. Determine the maximum direct stress produced in the surface of the shaft when it transmits 35 kW at 200 rev/min. [65.9 MN/m².] 8.14 (B). Calculate the minimum diameter of a solid shaft which is required to transmit 70 kW at 600 rev/min if the shear stress is not to exceed 75 MN/m². If a bending moment of 300 Nm is now applied to the shaft find the speed at which the shaft must be driven in order to transmit the same horsepower for the same value of maximum shear [630 rev/min.] stress.
Problems on Thick Cylinders. 1. A steel cylinder is 160 mm ID and 320 mm OD. If it is subject to an internal pressure of 150 MPa, determine the radial and tangential stress distributions and show the results on a plot (using a spreadsheet). Determine the maximum shear stress in the cylinder. Assume it has closed ends. (o, = 250 to 100 MPa, o, = 0 to ±150 MPa, tmax = 200 MPa.) 2. A cylinder is 150 mm ID and 450 mm OD. The internal pressure is 160 MPa and the external pressure is 80 MPa. Find the maximum radial and tangential stresses and the maximum shear stress. The ends are closed. (o = 20 to +60 MPa, o, = +80 to ±160 MPa, tmax = 90 MPa.)
Transcribed Image Text:Problems on Thick Cylinders. 1. A steel cylinder is 160 mm ID and 320 mm OD. If it is subject to an internal pressure of 150 MPa, determine the radial and tangential stress distributions and show the results on a plot (using a spreadsheet). Determine the maximum shear stress in the cylinder. Assume it has closed ends. (o, = 250 to 100 MPa, o, = 0 to ±150 MPa, tmax = 200 MPa.) 2. A cylinder is 150 mm ID and 450 mm OD. The internal pressure is 160 MPa and the external pressure is 80 MPa. Find the maximum radial and tangential stresses and the maximum shear stress. The ends are closed. (o = 20 to +60 MPa, o, = +80 to ±160 MPa, tmax = 90 MPa.)
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