A 20-in diameter flat belt pulley receives 25 hp at 500 rpm. This power is transferred...

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A 20-in diameter flat belt pulley receives 25 hp at 500 rpm. This power is transferred to a straight toothed 20-deg pressure angle spur gear with a pitch diameter of 10-in. The pulley weighs 250 lbs and the gear 150 lbs. The loads are steady and both gear and pulley are fixed to the shaft by a profile key. The mechanical system is part of a pump drive in an ammonia plant. FBH FBV -18"* 30, T 11-3 T T I) The choices of materials for the shaft of the system are: gray cast iron (class 35), malleable cast iron (A47-61), 1045 steel (cold drawn), stainless steel (302) and aluminum alloy 6061-T6. In that the shaft is in an ammonia plant, important properties for the shaft include: flexural rigidity, torsional rigidity, yield point, endurance strength, corrosive resistance and thermal resistance. Compile a table showing the relevant properties that are important in choosing a material for the shaft. Pick an appropriate material based on your engineering judgment. Use sound arguments to justify your choice. II) Using the material choice from part(I), Determine the shaft diameter based on the Maximum Distortional Energy Theory of Failure. 1) Explain thoroughly, each step in the analysis, making appropriate reference to relevant equations, diagrams and figures. Justify the use of design formulations and failure theories. 2) Show all properly labeled free body diagrams. 3) Show all labeled bending moment and torque diagrams. 4) Number all equations, figures and diagrams. 5) Show all computations. 6) Use word processors and graphing developing the report. grams in III) Choose appropriate Conrad type spherical roller bearings for the supports that will accommodate the shaft from part (II). Assume that the bearing should last one million revolutions. Note you may need an extensive AFBMA table. IV) Explain in reasonable detail the production processes necessary for manufacturing standard spherical roller bearings. Explain the processes using diagrams, photos and charts. A 20-in diameter flat belt pulley receives 25 hp at 500 rpm. This power is transferred to a straight toothed 20-deg pressure angle spur gear with a pitch diameter of 10-in. The pulley weighs 250 lbs and the gear 150 lbs. The loads are steady and both gear and pulley are fixed to the shaft by a profile key. The mechanical system is part of a pump drive in an ammonia plant. FBH FBV -18"* 30, T 11-3 T T I) The choices of materials for the shaft of the system are: gray cast iron (class 35), malleable cast iron (A47-61), 1045 steel (cold drawn), stainless steel (302) and aluminum alloy 6061-T6. In that the shaft is in an ammonia plant, important properties for the shaft include: flexural rigidity, torsional rigidity, yield point, endurance strength, corrosive resistance and thermal resistance. Compile a table showing the relevant properties that are important in choosing a material for the shaft. Pick an appropriate material based on your engineering judgment. Use sound arguments to justify your choice. II) Using the material choice from part(I), Determine the shaft diameter based on the Maximum Distortional Energy Theory of Failure. 1) Explain thoroughly, each step in the analysis, making appropriate reference to relevant equations, diagrams and figures. Justify the use of design formulations and failure theories. 2) Show all properly labeled free body diagrams. 3) Show all labeled bending moment and torque diagrams. 4) Number all equations, figures and diagrams. 5) Show all computations. 6) Use word processors and graphing developing the report. grams in III) Choose appropriate Conrad type spherical roller bearings for the supports that will accommodate the shaft from part (II). Assume that the bearing should last one million revolutions. Note you may need an extensive AFBMA table. IV) Explain in reasonable detail the production processes necessary for manufacturing standard spherical roller bearings. Explain the processes using diagrams, photos and charts.

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Heres a table showing the relevant properties for the shaft materials in consideration Material Flex... View the full answer