MP-60 · STRENGTH AND STRUCTURES
Fatigue Stress Range Screen
Calculate stress range, alternating stress, and mean stress from entered maximum and minimum nominal stress.
Preliminary design support. Your inputs and results stay in this browser.
WHAT THIS SCREEN ANSWERS
Fatigue questions begin with the actual stress cycle, not a single peak stress. The screen separates maximum, minimum, range, alternating, and mean stress from the entered cycle. A preliminary result should make later review faster, not disappear.
Life depends on material data, geometry, notch effects, surface, size, environment, load sequence, and a justified fatigue method. Confirm actual stress history, material data, concentration effects, mean-stress treatment, and applicable requirements. It is a reason to continue the decision chain.
Fatigue questions begin with the actual stress cycle, not a single peak stress. Life depends on material data, geometry, notch effects, surface, size, environment, load sequence, and a justified fatigue method. Do not let a convenient default become an undocumented design requirement.
The screen separates maximum, minimum, range, alternating, and mean stress from the entered cycle. Confirm actual stress history, material data, concentration effects, mean-stress treatment, and applicable requirements. The decision remains specific to this application because fatigue questions begin with the actual stress cycle, not a single peak stress. Use the next decision link when the outcome changes the layout.