Showing papers on "Vibration fatigue published in 2017"
TL;DR: A generalization of the Castillo and Fernandez-Canteli probabilistic fatigue model is proposed and it is shown how most fatigue models can be obtained as particular cases.
107 citations
TL;DR: In this paper, a comprehensive review of the multiaxial random fatigue criteria available in the literature is presented, mainly devoted to stress-based criteria for the evaluation of fatigue life in high-cycle regime.
Abstract: Nowadays, the estimation of fatigue life under multiaxial random loading is still an extremely complex task. In this paper, a comprehensive review of the multiaxial random fatigue criteria available in the literature is presented. Such a review is mainly devoted to stress-based criteria for the evaluation of fatigue life in high-cycle regime. Time and frequency domain approaches are examined. The focus of this paper is related to uniform stress/strain distribution, but also the effect of stress/strain gradient is tangentially addressed. More than 200 references are cited.
98 citations
TL;DR: In this paper, a modification to the Fatemi-Socie (FS) critical plane damage parameter has been shown to provide satisfactory fatigue life correlations for a variety of materials and loading conditions.
81 citations
TL;DR: In this article, a new fatigue damage model is proposed based on the commonly available S-N curve parameters of the material and does not require any additional material parameter determination or SN curve modification.
75 citations
TL;DR: In this paper, a nonlinear model for fatigue damage accumulation under variable amplitude loading is presented, where the known assumption that the isodamage curves are converging at the knee point of the S-N curve of the material, has been adopted.
74 citations
TL;DR: In this paper, the importance of non-Gaussianity and non-stationarity theoretically, numerically and experimentally was investigated in the case of Y-shaped specimens, where the excitation close to the natural frequency is random and in all the researched cases with the same power spectral density (PSD).
74 citations
TL;DR: In this article, the effect of cyclic loading frequency on pseudoelastic behavior and low cycle fatigue of shape memory alloys (SMAs) is investigated, and a new strain energy based fatigue model is proposed, and validated by experiments performed under different load ratios.
73 citations
TL;DR: In this article, a generalization of the fatigue Kohout-Věchet (KV) model for different fatigue damage parameters is proposed, and a new generalized model is described to describe all fatigue regimes from very low-cycle fatigue (VLCF) to very high-cycle fatigues (VHCF), accounting for several fatigue damage parameter, such as, strain parameter, Smith-Watson-Topper (SWT) parameter, Walker-like strain parameter and energy-based parameter in uniaxial loading conditions.
70 citations
TL;DR: In this paper, a methodology for fretting fatigue life estimation based on the evaluation of a multiaxial fatigue parameter at a critical distance below the contact surface is presented. But this method is not applicable to the case of a cylinder-on-flat contact configuration made of Al-4%Cu alloy.
61 citations
TL;DR: In this paper, the effect of loading frequency on the low cycle fatigue behavior of plain concrete in direct tension was investigated, and a new damage model was proposed based on the stiffness degradation and the secondary strain rate during low-cycle fatigue tests.
59 citations
TL;DR: In this paper, an artificial neural network (ANN) machine learning approach for the prediction of damage caused by random fatigue loading is presented. And the results obtained for ergodic Gaussian stationary stochastic loading is very encouraging.
TL;DR: In this paper, the authors used linear elastic fracture mechanics (LEFM) and extended finite element method (XFEM) to predict the total fatigue life of components, that is, the crack initiation and propagation life.
TL;DR: In this article, a self-powered piezo-floating-gate (PFG) sensor was used to detect distortion-induced fatigue cracking of steel bridges. But, the results indicate that the proposed method is capable of detecting different damage progression states, especially for the sensors that are located close to the damage location.
TL;DR: In this article, the formation of fatigue cracks in gearbox housings of high speed trains was investigated using fracture analysis, finite element analysis, and field tests under actual stress and acceleration conditions, which indicated that the first two natural vibration modes are excited by out-of-round wheels and rail-track irregularities, and the superposition of these vibration modes results in the occurrence of the beat phenomenon.
TL;DR: In this article, the fatigue lifetime of composite pipe subjected to cyclic internal hydrostatic pressure with variable amplitudes is considered, and the modeling which consists of three different phases as stress analysis, damage estimation and mechanical properties degradation is implemented in parallel with the random generation of fatigue loading pattern.
TL;DR: In this article, an improved and simplified fatigue life equation called LAPS, formulated from low cycle fatigue data of smooth specimens and the Rice-Kujawski-Ellyin asymptotic field, with proper crack opening functions for closure effects, was proposed.
TL;DR: In this article, the vibration-based fatigue behavior of Ti-6Al-4V was studied in an effort to address the use of additive manufacturing (AM) for the production of compressor parts.
TL;DR: In this article, the authors used run-tests to identify the index of non-stationarity in an excitation signal and found that amplitude-modulated nonstationary excitation results in a significantly shorter fatigue life if compared to a similar level of stationary excitation.
TL;DR: In this article, a novel fatigue life prediction method of concrete based on the energy dissipation is proposed, which is compared with experimental results, and the proposed prediction method is validated.
TL;DR: In this article, a new fatigue reliability assessment function which takes into account the vehicle and temperature loadings has been developed in this study, where the effect of the temperature difference has been considered based on the measured data and the finite element analysis.
TL;DR: The peak stress method (PSM) as mentioned in this paper is an approximate, FE-oriented application of the NSIF-based approaches to fatigue design of welded joints and it is based on the singular linear elastic peak stresses calculated from FE analyses carried out by using a proper mesh pattern; more precisely, the element type is fixed, the average element size is kept uniform in the mesh pattern and before running the mesh generation algorithm the size can be chosen arbitrarily within a given range.
TL;DR: In this article, the authors evaluated the fatigue life of different metallic materials under multiaxial loading by employing the critical plane-based criterion proposed by some of the present authors.
TL;DR: Numerical random vibration analysis with finite element method of an embedded electronic device is used to estimate the stresses Power Spectral Density (PSD) and the effectiveness of sub-modelling techniques in the random vibrations analysis is shown.
TL;DR: In this paper, the applicability of the modeling in predicting fatigue lifetime of composite pipes is validated using available experimental data in literature and a very good agreement between theoretically predicted fatigue life time and experimental data imply on acceptable level of accuracy of fatigue modeling procedure.
TL;DR: In this paper, the effect of defects on fatigue life performance of AlSi12 manufactured by selective laser melting was investigated based on the weakest-link theory and Weibull's probability density function.
TL;DR: In this article, the authors proposed a fatigue criterion based on the accumulation of dissipated energy along the fatigue cycles, which can be written as a simple expression using a single parameter.
TL;DR: In this article, a method for determining the decomposition of a nonstationary, random vibration with a non-Gaussian distribution into several stationary portions with Gaussian distributions is presented.
TL;DR: In this article, statistical size effects on the fatigue strength of notched electroslag remelted 50CrMo4 steel components under uniaxial and multi-xial loadings were investigated.
TL;DR: Results show that simulated fatigue life matches well with the random vibration test results, which implies that this approach could be a potential method for the predication of fatigue life of the 3D packaging under random vibration.
TL;DR: In this paper, the authors presented a comprehensive investigation into non-proportional loading induced multi-axial fatigue damage in aluminum alloys using a recently developed multiaxial fatigue-damaging parameter.