Comparison of Equivalent Stress Methods with Critical Plane Approaches for Multiaxial High Cycle Fatigue Assessment
Zafer Engin,Demirkan Coker +1 more
Reads0
Chats0
TLDR
In this paper, a MATLAB code is written which transforms the multiaxial cyclic stress state into a uniaxially cyclic state to use with the equivalent stress based methods.Abstract:
Several equivalent stress methods and more advanced critical plane criteria are compared in terms of their performance in fatigue life estimations under uniaxial and biaxial loadings in which the effect of phase is investigated. For this purpose a MATLAB code is written which transforms the multiaxial cyclic stress state into a uniaxial cyclic stress to use with the equivalent stress based methods. For critical plane approaches the program searches a damage parameter on all material planes. The maximum damage parameter is then compared with a material allowable obtained from uniaxial fatigue tests for life estimation. In addition, various methods for calibration of the material coefficient k and prominent stress history enclosure methods to calculate the shear stress amplitude are also studied for determining their effect on the performance of critical plane approaches.read more
Citations
More filters
Journal ArticleDOI
Multiaxial fatigue under variable amplitude loadings: review and solutions
TL;DR: In this article , a review summarizes the research status of four main aspects of multiaxial fatigue under random/variable amplitude loadings, namely, multi-axial fatigue criterion, method for critical plane determination, cycle counting method and damage accumulation criterion.
Journal ArticleDOI
Vibration Fatigue Analysis of Carbon Steel Coil Spring under Various Road Excitations
Y. S. Kong,Y. S. Kong,Shahrum Abdullah,Dieter Schramm,Mohd. Zaidi Omar,Sallehuddin Mohamed Haris +5 more
TL;DR: In this paper, a frequency-based approach predicted spring using acceleration signals that were collected from various road conditions was presented. But the results revealed that the harshest road condition was the rural road where the spring with fatigue life of 4.47 × 107 blocks to failure was obtained.
Journal ArticleDOI
Leading edge erosion of wind turbine blades: Multiaxial critical plane fatigue model of coating degradation under random liquid impacts
Journal ArticleDOI
Finite-element simulation of multi-axial fatigue loading in metals based on a novel experimentally-validated microplastic hysteresis-tracking method
TL;DR: In this paper, the authors proposed a new approach to the prediction of multiaxial fatigue with proportional and non-proportional loading based on a recently developed three-dimensional small-strain microplasticity-based constitutive theory.
Journal ArticleDOI
Evaluation of Stress and Fatigue of a Rail Vehicle Suspension Component
TL;DR: In this article, the use of pivot bearing friction liners, made of selected materials, in railway freight wagons' spherical center bowls was discussed, and the effect of suspension dynamics on the equivalent stresses in the liner material were carried out using the finite element method and multibody simulation.
References
More filters
Journal ArticleDOI
On the characterization of the critical plane with a simple and fast alternative measure of the shear stress amplitude in multiaxial fatigue
TL;DR: In this paper, a measure which considers a Maximum Rectangular Hull (MRH) is discussed to compare the fatigue strength estimates based on both methods (MCC and MRH) and it is shown that the multiaxial fatigue estimates are improved for most data evaluated when the equivalent shear stress amplitude is computed in terms of the MRH.
Journal ArticleDOI
Efficiency of algorithms for shear stress amplitude calculation in critical plane class fatigue criteria
TL;DR: In this paper, some algorithms are studied to assess their computational efficiency within the engineering framework of the application of fatigue criteria of the critical plane type, and the search of the minimum enclosing circle is an optimization problem for which efficient numerical solution schemes are required.
Journal ArticleDOI
Multiaxial fatigue assessment of welded joints using the notch stress approach
TL;DR: In this paper, the notch stress approach according to the IIW is used together with 8 different multiaxial criteria, including equivalent stress-, interaction equation-and critical plane approaches.
Evaluation of uniaxial fatigue criteria applied to multiaxially loaded unnotched samples
TL;DR: In this paper, a comparison between several uniaxial fatigue criteria applied to a large set of experimental results for smooth unnotched samples tested under multi-axial loading is presented.
Journal ArticleDOI
Combined resolved shear stresses as an alternative to enclosing geometrical objects as a measure of shear stress amplitude in critical plane approaches
TL;DR: In this article, a measure of shear stress amplitude based on a combination of resolved shear stresses amplitudes on two perpendicular directions of a material plane is investigated, which turns unnecessary numerical schemes to accelerate the critical plane search, as well as it enables to significantly reduce the processing time of finite element based fatigue calculations.