Topic
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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TL;DR: In this article, an analytic methodology was developed to predict the fatigue life of a structure ex-periencing stationary, Gaussian random vibration excitation, where only the input powerspectral density and damping factor are required.
Abstract: An analytic methodology was developed to predict the fatigue life of a structure ex-periencing stationary, Gaussian random vibration excitation. This method allows theestimation of fatigue life using a frequency domain method, where only the input powerspectral density and damping factor are required. The methodology uses linear elasticfracture mechanics for fatigue crack propagation and accounts for the frequency shiftingthat occurs due to fatigue crack evolution. Good results have been obtained comparingthe analytic model to both finite element analysis (FEA) and experimental results, formild-steel cantilever beams. Keywords damageaccumulation;fatigue;fracture;frequencyshift;powerspectralden-sity; random vibration.NOMENCLATURE A = constant a = crack depth a f = final crack depth C = Paris law constant C ray = statistical correction factor c = half height of rectangular cross-section D ray = equivalent damage constant d = notch depthd a /d N = crack growth rate dt = differential time
15 citations
TL;DR: In this article, an ordered statistics treatment of the fatigue process that predicts a fatigue life distribution of the Weibull type, which is an asymptotic distribution of extreme smallest values, is presented.
15 citations
TL;DR: In this article, the authors discuss the dependence of fatigue life prediction on the cyclic material properties in terms of the parameters that define the stress/strain curve, and compare the performance of the two approaches.
15 citations
TL;DR: In this article, the results of fatigue tests of steel #45 (Chinese steel) notched specimens subject to axial loads with a stress concentration factor kt = 2·0 were used to estimate the fatigue strength for different survival probabilities at an arbitrarily long fatigue life.
15 citations
TL;DR: In this paper, a failure analysis of the highway sign supporting structure due to wind loading is presented, where the authors explain why the commonly practiced static strength validation of such structures, under the extreme monotonic wind load, is not sufficient for the design of windloaded stationary structures.
15 citations