Application research on Haigh diagram in the wind turbine fatigue analysis

摘要

The influence of mean stress on fatigue has to be considered by means of Haigh diagram, the actual stress range is modified to damage-equivalent range.There are three main methods for creating Haigh diagram, such as experiment and empirical relationships and six points, which has the different application field.The creating and application of Haigh diagram in GL certification for wind turbines is studied, and the solving method for the mean stress sensitivity is given.