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An Integrated Approach for Stress-Life Methodology


Many current fatigue calculations utilize stress-life methods that have evolved over the many years, but with techniques, limitations, and assumptions that today may no longer apply. This work presents an integrated approach which unites existing published data, incorporates current test data, applies current computer methods and abilities, and expands statistical scatter and probability in life predictions. The stress-life technique reduces or eliminates analysis assumptions allowing for very uniform fatigue predictions and a more seamless integration with damage tolerance analysis.

This presentation was given by Michael Urban, Chief Structural Methods & Prognostics, for Sikorsky Aircraft,  as part  of the ANSYS Users Group Meeting, held by CAE Associates on September 28, 2010.