The Reliability of the Finite Element Simulation of the Interface Mechanical Effect of Inclusion and Matrix Material in Powder Metallurgy Superalloy

2017 4th International Conference on Advanced Materials, Mechanics and Structural Engineering

材料科学;机械制造

Liu, Xin-Ling^1,2,3 ; Wang, Tian-Yu^1,2,3 ; Zhao, Kai^1,2,3

AVIC Failure Analysis Center, Beijing Institute of Aeronautical Materials, Beijing

100095, China^1

Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation, Beijing

100095, China^2

Aviation Key Laboratory of Science and Technology on Materials Testing and Evaluation, Beijing

100095, China^3

关键词: Analytical formulas;    Circular inclusions;    Comparison analysis;    Complex variable function;    Finite element simulations;    Inclusion defects;    Matrix materials;    Mechanical effects;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/269/1/012027/pdf
DOI  :  10.1088/1757-899X/269/1/012027

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The inclusion defects in powder metallurgy superalloy have the characteristics of randomness, such as the shape, size, location and composition. It is important to establish effective and reliable finite element model and method to study the influence of the different defects. In this paper, the inclusion/matrix interface model was proposed, and on the basic theory of two-dimensional elastic problems of complex variable function, the analytical formula was derived and the analytical solution was calculated for the condition of circular inclusion in matrix. On the other hand, stress distribution of the interface of inclusion and matrix was simulated by finite element method. The finite element model is proved effective, reliable through comparison analysis between the numerical analysis method and finite element simulation.