Question

A 100mm shaft is loaded with a torque of 100Nm and a bending moment of 50Nm. As a designer you need to select a material to find a suitable material for size, weight and cost. Using Von-Mises stress and the distortion energy failure theory determine the sizing / weight and cost for each of the three materials below. Complete the table with your answers and show all work.

Yield Strength	Density (kg/m^3)	Cost ($/kg)	Required Diameter (mm)	Weight (kg)	Cost ($)
60MPa	7000	1
100MPa	6500	1.7
120MPa	8000	1.9

Answer 1

thanks

In my calculations w as weight

m is mass

Please don't confuse.it is standard notation....

Thank you very much.