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Vibration fatigue

About: Vibration fatigue is a research topic. Over the lifetime, 3460 publications have been published within this topic receiving 46297 citations.


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Journal ArticleDOI
TL;DR: In this paper, a new method and new relationships for fatigue life calculation is proposed taking into account the superposition of fatigue loadings, considering the dependence of critical stress value on the number of loading cycles, as well as the nonlinear behaviour of the material along with the influence of the mean stress, cyclic loads rate and deteriorations.

23 citations

Journal ArticleDOI
TL;DR: In this article, the effects of fatigue on damping factor were studied for 6061-T6511 aluminium alloy and the experiments showed that the damping energy changes with the number of fatigue cycles.
Abstract: Studies in fatigue can be summarized into two stages, fatigue crack initiation and crack propagation. Fatigue damage may increase the risk of failure under cyclic load. Energy dissipation, termed damping, occurs in engineering metals and is a function of the cyclic loading history. Damping behaviour of materials has been estimated using many different experimental techniques, and parameters i.e. the loss factor vs. strain amplitude, frequency range, etc. However, micro-structural changes in the form of fatigue damage are also contributors to damping in engineering materials. In order to measure energy dissipation, a damping monitoring method has been used. Under a constant cyclic load up to the point of fatigue crack initiation, the effects of fatigue on damping factor were studied for 6061-T6511 aluminium alloy. In the experiments, the stress levels were below yield point, 50% and 70% of ultimate strength. Experimental results showed that the damping factor changes with the number of fatigue cycles. Percentage increase in damping energy was calculated using experimental data.

23 citations

Journal ArticleDOI
TL;DR: In this article, a fatigue life analysis method combined with experiment and simulation is presented to accurately predict location of cracks and fatigue life of this component and find the reasons, a rigid and flexible hybrid model of whole truck is built to get the stress situation based on modal stress recovery method, taking flexible body of A-type frame into account.

23 citations

Journal ArticleDOI
TL;DR: In this paper, the fatigue tests of concrete have been conducted with constant confined stress, including compression, tension and alternate tension-compression fatigue loading, and the equations of S-N curves under certain lateral stress were established and fatigue failure criterions for different loading cases were proposed.
Abstract: The fatigue tests of concrete have been conducted with constant confined stress, including compression, tension and alternate tension–compression fatigue loading. Based on the results of experiment, the equations of S–N curves under certain lateral stress were established and fatigue failure criterions for different loading cases were proposed. Thus according to the S–N curves, the fatigue reduction coefficients for different fatigue loading were obtained. At last, the necessity of the proposed fatigue failure criterion was shown by checking an existing concrete structure’s computation under fatigue loading. The investigation of this paper can provide some useful information for the design of concrete structures such as reinforced concrete bridge crane beams, offshore platforms, concrete sleepers, nuclear power plants and pressure vessels.

23 citations

Journal ArticleDOI
Chang-Hwan Lee1, Seung Ki Woo1, Young-Kyu Ju1, Dong Won Lee, Sang Dae Kim1 
TL;DR: In this paper, an experimental study was carried out to investigate the low-cycle fatigue damage for the proposed hourglass-shaped strip damper (HSD), and four different types of cyclic loadings were applied in this test.
Abstract: Metallic dampers have been used to dissipate large amounts of seismic energy through inelastic deformation in order to minimize damages to the main structural components. However, cumulative inelastic deformation of the metallic dampers results in fatigue cracks, so the life of the device may be reduced significantly. In this paper, an experimental study was carried out to investigate the low-cycle fatigue damage for the proposed hourglass-shaped strip damper (HSD). Four different types of cyclic loadings were applied in this test. The microstructures of the fracture surfaces and the crack distribution patterns were also observed. From the results, it was found that the shape of HSD was well designed for excellent fatigue performance, and the low-cycle fatigue characteristics of the steel strip damper could be well defined by the Manson-Coffin relationship. To consider the mean deformation and the loading sequences, a modified fatigue damage prediction model was proposed that incorporates the effe...

23 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202355
2022125
202136
202035
201941
201855