Question

As per the elastic theory, the fraction of factor of safety calculated using

• A. tensile stress / working stress
• B. bearing stress / tensile stress
• C. yield stress / working stress
• D. compressive stress / yield stress

Answer 1

Answer:

C. yield stress / working stress

Factor of safety (FOS) is calculated to ensure that the material has higher strength than the external loading. For ductile materials, FOS is calculated using the yield stress and working stress, $FOS = \frac{Yield stress} {Working stress}$