An efficient computational strategy of cycle-jumps dedicated to fatigue of composite structures. (June 2020)

• Record Type: Journal Article
• Authors: Sally, O.; Laurin, F.; Julien, C.; Desmorat, R.; Bouillon, F.
• Is Part Of: International journal of fatigue. Volume 135(2020)
• Publication Date: 2020-06
• Subjects: Composite materials -- Fatigue life -- Damage model -- Cycle-jump -- Finite Element analysis; Materials -- Fatigue -- Periodicals; Materials -- Fatigue; Periodicals; 620.1122
• DOI: 10.1016/j.ijfatigue.2020.105500
• Languages: English
• ISSNs: 0142-1123

Abstract

Highlights: Method reducing the simulation time of structures subjected to fatigue loadings. Method designed for kinetic models, enabling a non-linear extrapolation of variables. The accuracy and performance of the cycle-jump procedure is assessed. Abstract: A method to accelerate numerical simulations of composite structures subjected to complex fatigue loading is investigated. A kinetic (rate) damage model predicts the damage evolution of composites during fatigue loadings, even for spectral loadings. A non-linear cycle-jump approach designed specifically for rate damage models is proposed, it allows to reduce drastically the computational time of fatigue Finite Element simulations. The simulations using the proposed cycle-jump method are compared to reference calculations where all cycles are conducted and also benchmarked against a classical cycle-jump method. This approach accounts for the skipped cycles, even under multiaxial loadings, and leads to large computational cost reductions.