An efficient computational strategy of cycle-jumps dedicated to fatigue of composite structures

Sally, Orianne; Laurin, Frédéric; Julien, Cédric; Desmorat, Rodrigue; Bouillon, Florent

doi:10.1016/j.ijfatigue.2020.105500

Cited by 13 publications

(2 citation statements)

References 22 publications

(39 reference statements)

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“…Luders et al [37] have developed an adaptive cycle jump method for micromechanical fatigue simulations of fiber-reinforced plastics. Sally et al [38] have proposed an efficient computational strategy of cycle jumps dedicated to the fatigue of composite structures. Whatever the developed algorithm is, a common assumption adopted in various cycle jump techniques is that a single cycle is very short compared to the full cycle lifetime; therefore, the change of material states in one cycle is negligible compared to the change over the entire cycle lifetime.…”

Section: Introductionmentioning

confidence: 99%

Combination of mean-field micromechanics and cycle jump technique for cyclic response of PA66/GF composites with viscoelastic–viscoplastic and damage mechanisms

Chen

Chatzigeorgiou

Robert³

et al. 2023

Acta Mech

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An accelerated micromechanics framework based on the extended Mori-Tanaka transformation field analysis (TFA) and cycle jump technique is proposed to predict the homogenized response of short glass fiber-reinforced polyamide 66 composites (PA66/GF) under a large number of loading cycles (> 100,000 cycles). The extended theory accounts for microscopic viscoelastic-viscoplastic and damage mechanisms, and realistic microstructures induced by the injection molding process. Toward this end, a number of training cycles are first conducted using the extended Mori-Tanaka TFA to obtain the global evolution functions of material state-dependent variables (SDVs) for each phase. These SDVs are extrapolated linearly to a certain jump length with the help of global evolution functions such that direct numerical simulation of the cycles during this interval can be skipped, leading to a large computational cost reduction. After the cycle jump, a set of complete cycles are performed based on the extrapolated SDVs using the Mori-Tanaka TFA simulation to re-establish the global evolution functions. The implementation of the cycle jump procedure is facilitated by introducing an extrapolation control function to allow adaptive jump size control as well as to minimize the extrapolating error. The capabilities of the extended theory with the cycle jump technique have been validated extensively vis-à-vis cycle-by-cycle benchmark calculations under various loading conditions. It has been further verified with the experimental results of actual PA66/GF composites under high-cycle loading beyond which the cycle-by-cycle simulations can achieve.

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Section: Introductionmentioning

confidence: 99%

Combination of mean-field micromechanics and cycle jump technique for cyclic response of PA66/GF composites with viscoelastic–viscoplastic and damage mechanisms

Chen

Chatzigeorgiou

Robert³

et al. 2023

Acta Mech

View full text Add to dashboard Cite

show abstract

“…Rivera et al [27] and Llobet et al [28] then integrated the automatic cyclic jump algorithm into PFDM to predict fatigue life. However, an error in simulations of these models will be induced by the extrapolation of internal variables, which may be prohibitive for life prediction according to Sally et al [29]. Moreover, it is also complicated to collect the information of all integration points for the numerical implementation of the automatic cyclic jump algorithm.…”

Section: Introductionmentioning

confidence: 99%