A damage mechanics based method for fatigue life prediction of the metal graded materials

17th IUMRS International Conference in Asia

Tong, Yang^1 ; Hu, Weiping^1 ; Meng, Qingchun^1

School of Aeronautic Science and Engineering, Beihang University, Beijing

100191, China^1

关键词: Beam model;    Continuum damage mechanics theory;    Damage evolution equation;    Damage mechanics;    Fatigue life prediction;    Graded materials;    Material parameter;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/182/1/012016/pdf
DOI  :  10.1088/1757-899X/182/1/012016

来源: IOP

【 摘 要 】

Based on the continuum damage mechanics theory, the fatigue life prediction for TC4-TC11 graded material was conducted. At first, the damage evolution equation was derived, then the method to calibrate material parameters for TC4-TC11 graded material was proposed, and all the material parameters were obtained. A beam model with TC4-TC11 graded material was established by using the stratified method and finite element method. Finally, the fatigue life of TC4-TC11 graded beam was predicted.