Identification and Validation of a Low Cycle Fatigue Damage Model for Al 7075-T6 Alloy

Author:

Masih Saeed1,Mashayekhi Mohammad1,Torabian Noushin2

Affiliation:

1. Department of Mechanical Engineering, Isfahan University of Technology, Isfahan 84156-83111, e-mail:

2. Department of Mechanical Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran e-mail:

Abstract

In this paper, the behavior of 7075-T6 aluminum alloy under low cycle fatigue (LCF) loading is experimentally and numerically investigated using continuum damage mechanics (CDM). An experimental procedure is established to identify the damage parameters for Al 7075-T6. A damage-coupled explicit finite element code is developed using the experimentally extracted damage parameters to study the material behavior under LCF loading. Moreover, fractographic examinations are conducted to identify the fatigue crack initiation locations and propagation mechanisms. The model is employed for life-time assessment of stringer-skin connection of a fuselage and the results are compared with the data available in the literature.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Cited by 6 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. A crystal plasticity model of low cycle fatigue damage considering dislocation density, stress triaxiality and Lode parameter;International Journal of Fatigue;2023-10

2. Comparison of Fatigue Life of AA2050-T852 and AA7050-T7452 Alloy Forgings at Different Orientations;Journal of Engineering Materials and Technology;2023-05-08

3. A Review on CDM-Based Ductile Models and its Application;Transactions of the Indian Institute of Metals;2022-11-10

4. Coupled numerical simulation of low-cycle fatigue damage in metal components;Engineering Structures;2021-02

5. Continuum damage mechanics-based ductile behavior and fatigue life estimation of low carbon steels: AISI 1020 and AISI 1030;Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications;2019-01-08

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