Method for assessing fatigue damage and fatigue life based on abaqus

Abstract

A method for assessing fatigue damage and fatigue life based on Abaqus is provided. The micro-macroscopic scale coupled model is based on the macroscopic representative area and the microstructure characterization of the material, and the microscopic sub-model is established by the Voronoi algorithm. The algorithm has good cross-platform compatibility and portability, fundamentally solves the technical problem of micro-macroscopic multi-scale coupling and establishes and applies the multi-scale coupled model to the fatigue damage and life assessment. The micro-macroscopic multi-scale coupled fatigue damage and life assessment model and algorithm of the material is capable of both considering the fatigue damage evolution on a microscopic scale and assessing the fatigue life, as well as calculating and assessing the two physical parameters on a macroscopic scale, so as to predict the fatigue damage and life of the whole workpiece.

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