Machinery often fails under the action of repeating or fluctuating stresses, even when the calculated stress is well below the ultimate strength of the material, and in many causes even below the yield strength. The distinguishing characteristics of such failures is that the stresses have been repeated a very large number of times. This is fatigue failure.
Autodesk Simulation's Fatigue Wizard makes complex fatigue life assessment both achievable and affordable. Some of the capabilities include: