Reliability Based Design Optimization for Multiaxial Fatigue Damage Analysis Using Robust Hybrid Method. (6th July 2017)

• Record Type: Journal Article
• Authors: Yaich, A.; Kharmanda, G.; El Hami, A.; Walha, L.; Haddar, M.
• Is Part Of: Journal of mechanics. Volume 34:Number 5(2018)
• Page Start: 551
• Page End: 566
• Publication Date: 2017-07-06
• Subjects: Reliability Based Design Optimization -- Multiaxial fatigue damage -- Robust Hybrid Method -- Random vibrations; Mechanics, Analytic -- Periodicals; Mechanics -- Periodicals; 620.1005
• DOI: 10.1017/jmech.2017.44
• Languages: English
• ISSNs: 1727-7191

Abstract

Abstract : The purpose of the Reliability-Based Design Optimization (RBDO) is to find the best compromise between safety and cost. Therefore, several methods, such as the Hybrid Method (HM) and the Optimum Safety Factor (OSF) method, are developed to achieve this purpose. However, these methods have been applied only on static cases and some special dynamic ones. But, in real mechanical applications, structures are subject to random vibrations and these vibrations can cause a fatigue damage. So, in this paper, we propose an extension of these methods in the case of structures under random vibrations and then demonstrate their efficiency. Also, a Robust Hybrid Method (RHM) is then developed to overcome the difficulties of the classical one. A numerical application is then used to present the advantages of the modified hybrid method for treating problem of structures subject to random vibration considering fatigue damage.