Modified Rainflow Counting Algorithm for Fatigue Life Calculation

摘要

Fatigue life calculation of a varying load spectrum is a complex task. There are various approaches suggested to simplify the load spectrum into simple major and minor cycle. One such approach is rainflow counting methodology. In this paper, a new Microsoft Excel-based algorithm for the modified graphical rainflow counting method is presented. Validity and accuracy of algorithm have been demonstrated by various simple as well as complex examples. This method allows the application of Miner's rule in order to assess the fatigue life of a structure subject to complex loading.