Question

The given steel shaft sees 6.0 kN and 9 kN loads as shown acting along the x and z axes respectively. The bearings at A and B exert only x and z components of force on the shaft. The gears are also made of steel and are 15 mm thick. Assumptions: (cite others in your design as required) 1. max material temperature = 400 deg F 2. machined shaft and gear surfaces 3. there are people in vicinity of the shaft/gear assembly 4. shoulder fillets where gears attached have a radius of 3.5 mm 5. periodic inspections utilize dye penetrant to reveal flaws as small as 0.5 mm. 6. The torsional stress is steady ($T_a = 0$) 7. The shafts experiences completely reversed bending loads (midrange bending moment $M_m = 0$) 8. Use your engineering judgement on other required assumptions (safety factor, etc.)

          The given steel shaft sees 6.0 kN and 9 kN loads as shown acting along the x and z axes respectively. The bearings at A and B exert only x and z components of force on the shaft. The gears are also made of steel and are 15 mm thick.
Assumptions: (cite others in your design as required)
1. max material temperature = 400 deg F
2. machined shaft and gear surfaces
3. there are people in vicinity of the shaft/gear assembly
4. shoulder fillets where gears attached have a radius of 3.5 mm
5. periodic inspections utilize dye penetrant to reveal flaws as small as 0.5 mm.
6. The torsional stress is steady ($T_a = 0$)
7. The shafts experiences completely reversed bending loads (midrange bending moment $M_m = 0$)
8. Use your engineering judgement on other required assumptions (safety factor, etc.)

The given steel shaft sees 6.0 kN and 9 kN loads as shown acting along the x and z axes respectively. The bearings at A and B exert only x and z components of force on the shaft. The gears are also made of steel and are 15 mm thick.
Assumptions: (cite others in your design as required)
1. max material temperature = 400 deg F
2. machined shaft and gear surfaces
3. there are people in vicinity of the shaft/gear assembly
4. shoulder fillets where gears attached have a radius of 3.5 mm
5. periodic inspections utilize dye penetrant to reveal flaws as small as 0.5 mm.
6. The torsional stress is steady (Ta = 0)
7. The shafts experiences completely reversed bending loads (midrange bending moment Mm = 0)
8. Use your engineering judgement on other required assumptions (safety factor, etc.)

Added by Gloria T.

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