One of the methods to reduce maximum stress is to keep the strain energy in the beam constant while changing the beam profile. Additional beam profiles are trapezoidal, tapered and torsion. Yielding Yielding occurs when the design stress exceeds the material yield strength. The Von Mises yield criterion states that yielding occurs when the Von Mises stress, exceeds the yield strength in tension. Often, Finite Element Analysis stress results use Von Mises stresses.
Safety factor is a function of design stress and yield strength.
The following equation denotes safety factor, f s . See our Material Terms and Links page for additonal information. The following are related Strength of Material links and resources. Copyright 2000 - 2001, by The Engineer's Edge, All rights reserved.