Problem: Design a shaft to support the attachments shown in

Figure below and find the minimum design safety factor. Do you

achieve safety factor of $3?$ If no$,$ redesign the shaft to get safety

factor of $3.$

Given: A preliminary design of the shaft configuration is shown

in figure $10-5.$ It must transmit $2$ hp at $1725$ rpm $.$ The torque and

the force on the gear are both constant with time. Start your

calculation with diameter of shaft a C equal to $0\mathrm{.}53$ in$.$

Assumption: There are no applied axial loads. Steel will be

used for infinite life. Assume a stress$-$concentration factor of $3\mathrm{.}5$

for the step radii in bending, $2$ for the step radii in torsion, and $4$

at the keyways.Problem: Design a shaft to support the attachments shown in

Figure below and find the minimum design safety factor. Do you

achieve safety factor of $3?$ If no$,$ redesign the shaft to get safety

factor of $3.$

Given: A preliminary design of the shaft configuration is shown

in figure $10-5.$ It must transmit $2$ hp at $1725$ rpm $.$ The torque and

the force on the gear are both constant with time. Start your

calculation with diameter of shaft a C equal to $0\mathrm{.}53$ in$.$

Assumption: There are no applied axial loads. Steel will be

used for infinite life. Assume a stress$-$concentration factor of $3\mathrm{.}5$

for the step radii in bending, $2$ for the step radii in torsion, and $4$

at the keyways.