Analytical Solution of Aluminum Alloy Plates With Holes Subjected to Cold Expansion With Reverse Yielding
Article dans une revue avec comité de lecture
The expansion induced by cold working is a common process that generates residual stresses. It is used when fatigue damage accumulation and life reduction of aluminum alloy perforated plates is an issue in the aeronautics industry. This process is an attractive solution to extend the fatigue lifetime of these structures. It aims at generating residual stresses and increases thereby the strength of hollow parts including aluminum alloy plates with holes commonly used in the manufacture of airplane fuselage. Unfortunately, the life predictions require a good prediction of the residual stresses and in particular when reverse yielding takes place. An analytical model to predict the residual stresses induced during the expansion process due to the cold strain hardening is developed. The proposed analytical model is based on an elasto-plastic behavior, with a power law material behavior and relies on the theory of autofrettaged thick wall cylinders in plane strain state to which reverse yielding is incorporated. The application of Hencky theory of plastic deformation is used in the analytical calculations of the stresses and strains. Finite element numerical simulation is used to validate the developed analytical model by comparison of the radial, hoop, longitudinal, and equivalent stresses for both the loading and unloading phases. The obtained results show clearly that the level of residual stresses depend mainly on the interference and strain hardening while reverse yielding reduces the stresses near the hole.
Files in this item
Showing items related by title, author, creator and subject.
Article dans une revue avec comité de lectureBENFRIHA, Khaled; EL ZANT, Chawki; CHARRIER, Quentin; BOUZID, Abdel-Hakim; WARDLE, Peter; BELAIDI, Idir; LOUBÈRE, Stéphane; GHODSIAN, Nooshin; AOUSSAT, Améziane (EDP Sciences, 2021-10)The concept of Industry 4.0 has been developed a lot from a theoretical point of view. However, the real applications on production lines remain few in number, due to the difficulties of interoperability between the different ...
Chapitre d'ouvrage scientifiqueMANAC'H, Yann-Guirec; BENFRIHA, Khaled; AOUSSAT, Améziane (Springer, 2013)This work presents a novel approach using dependability of sub-assemblies to compute the life cycle cost of complex products (i.e. products that are technologically more complex than average or have a higher life expectancy) ...
Conventional rotational molding process and aerodynamic characteristics of an axial-flow hollow blades rotor Article dans une revue avec comité de lectureLUCAS, Albert; DANLOS, Amélie; SHIRINBAYAN, Mohammadali; MOTAHARINEJAD, Vajihe; PARIDAENS, Richard; BENFRIHA, Khaled; BAKIR, Farid; TCHARKHTCHI, Abbas (Springer Verlag, 2019)n this work, the rotational molding process is developed to manufacture in one piece an axial-flow turbomachine rotor with hollow blades. Giving to our knowledge, this process has never been employed in the making of these ...
Mechanical strength and shape accuracy optimization of polyamide FFF parts using grey relational analysis Article dans une revue avec comité de lectureSHAKERI, Zohreh; BENFRIHA, Khaled; ZIRAK, Nader; SHIRINBAYAN, Mohammadali (Springer Science and Business Media LLC, 2022-07-30)AbstractThis paper investigates the effect of different additive manufacturing process parameters such as chamber temperature, Printing temperature, layer thickness, and print speed on five essential parameters that ...
Mechanical strength and shape accuracy optimization of polyamide FFF parts using grey relational analysis Article dans une revue avec comité de lectureSHAKERI, Zohreh; BENFRIHA, Khaled; ZIRAK, Nader; SHIRINBAYAN, Mohammadali (Springer nature, 2022-07)This paper investigates the effect of different additive manufacturing process parameters such as chamber temperature, Printing temperature, layer thickness, and print speed on five essential parameters that characterize ...