https://hal-polytechnique.archives-ouvertes.fr/hal-00778281/document

Multiaxial fatigue models for short glass fibre reinforced polyamide. Part II: Fatigue life estimation

The great success of stents in treating cardiovascular disease is actually undermined by their long-term fatigue failure The high variability of stent failure incidence suggests that it is due to several correlated aspects, such as loading conditions, material properties, component design, surgical procedure, and patient functional anatomy Numerical and experimental non-clinical assessments are included in the recommendations and requirements of several regulatory bodies and they are thus exploited in the analysis of stent fatigue performance Optimization-based simulation methodologies have been developed as well, to improve the fatigue endurance of novel designs This paper presents a review on the fatigue issue in metallic stents, starting from a description of clinical evidence about stent fracture up to the analysis of computational approaches available from the literature The reported discussion on both the experimental and numerical framework aims at providing a general insight into stent lifetime prediction as well as at understanding the factors which affect stent fatigue performance for the design of novel components

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Fatigue of Metallic Stents: From Clinical Evidence to Computational Analysis

Cyclic behaviour of structures under thermomechanical loadings: Application to exhaust manifolds

Revisiting the Dang Van criterion

Direct method for life prediction of fibre reinforced polymer composites based on kinematic of damage potential

A high-cycle fatigue life model for structures subjected to variable amplitude multiaxial loading is presented in this paper. It treats any kind of repeated blocks of variable amplitude multiaxial loading without using a cycle counting method. This model based on a mesoscopic approach is characterized by the following features: (i) the choice of a damage factor related to the accumulated mesoscopic plastic strain per stabilised cycle; (ii) the use of a mesoscopic mechanical behaviour taking into account the fatigue mechanisms such as plasticity and void growth. This behaviour is a von Mises elastoplastic model with linear kinematic hardening and hydrostatic stress dependent yield stress. The fatigue life model has six parameters identified with one SN curve and two fatigue limits. In-phase and out-of-phase experimental tests from the literature are simulated. The predicted fatigue lives are compared to experimental ones.

M. Jabbado

Papers

A high‐cycle fatigue life model for variable amplitude multiaxial loading