A Study on the Maximal Turbine Disk Strain Cycle with Residue Stress

In order to avoid the difficulty and expensive measurement of transient temperature field,a method for maximal stress and strain cycle calculation using residue stress is proposed.This method was used to analyze a high pressure turbine disk with the displacement of stress release as geometrical boundary condition.The residue stress and the maximal stress and strain cycle of the critical points adjacent to central hole and radial pin hole are obtained and the life of low cycle fatigue is predicted.The result shows that using the residue stress we can calculate accurately the maximal stress-strain cycle,which is the main factor influencing component life.