A simple numerical method of cycle jumps for cyclically loaded structures

Cojocaru, D.; Karlsson, Anette M.

doi:10.1016/j.ijfatigue.2006.01.010

Cited by 73 publications

(64 citation statements)

References 32 publications

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“…iii) The model, integrating temporal effects on several time ranges, can provide a basis for modelling high cycle fatigue. Of course, such fatigue analyses require model reduction techniques (Cojocaru and Karlsson, 2006;Haouala and Doghri, 2015) that enable simulations on long time periods, as well as advanced fatigue theories for polymers (Nouri et al, 2009;Launay et al, 2013b).…”

Section: Discussionmentioning

confidence: 99%

Phenomenological multi-mechanisms constitutive modelling for thermoplastic polymers, implicit implementation and experimental validation

Praud

Chatzigeorgiou

Bikard

et al. 2017

Mechanics of Materials

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In this work, a phenomenological model for thermoplastic polymers involving several mechanisms is proposed. The constitutive equations lie within the framework of thermodynamics and account for both viscoelasticty, viscoplasticity and ductile damage. An implicit numerical scheme utilizing the "return mapping algorithm" is provided along with the formulation of the tangent operator. The parameters of the developed model are experimentally identified through a gradient-based inverse method using three strain-controlled configurations. The model validation is achieved by comparing numerical results with experimental data obtained on a cyclic loading configuration test.Finally, the capabilities of the proposed model are demonstrated with a series of numerical simulations where complex cyclic and non-proportional loading conditions are applied as well as with a structural FE application.

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Section: Discussionmentioning

confidence: 99%

Phenomenological multi-mechanisms constitutive modelling for thermoplastic polymers, implicit implementation and experimental validation

Praud

Chatzigeorgiou

Bikard

et al. 2017

Mechanics of Materials

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show abstract

“…Their extrapolation scheme works based on extrapola tion of the damage parameter by using the explicit Euler integra tion formula [13]. Cojocaru and Karlsson [14] employed the cycle jump technique to simulate the response of Thermal Barrier Coat ings (TBCs) under cyclic thermal loading, where the structure evolves due to changing material properties during high tempera ture [14]. In this case, damage mechanics was not used.…”

Section: E-mailmentioning

confidence: 99%

“…In this case, damage mechanics was not used. They pro posed a control function that automatically monitors the length of the cycle jump to ensure a realistic solution [14].…”

Section: E-mailmentioning

confidence: 99%

Accelerated fatigue crack growth simulation in a bimaterial interface

Moslemian

Karlsson

Berggreen

2011

International Journal of Fatigue

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“…4 A CCrackTipOp tions object contains a heterogeneous collection of objects of different classes. Each of these objects implements a user-defined propagation criterion.…”

Section: General Approachmentioning

confidence: 99%

“…incl uding cyclic crack growth , limi ts the usefulness of FEA for predicting fatigue behavior. An approach to reduce the computational time for the cycli cally loaded struct ures is the so called cycle-julllp rechllique, successfully appl ied in selected cases, e.g., [4][5][6]. In this paper, we wi ll develop a technique for incorporating the accumulation of damage associated with fat igue, that is, cyclic crack gmw/It.…”

Section: Introductionmentioning

confidence: 99%