Journal ArticleDOI
Experimental characterization and modelling of triaxial residual stresses in straightened railway rails
Robert Kaiser,Mario Stefenelli,Thomas Hatzenbichler,Thomas Antretter,Michael Hofmann,Jozef Keckes,Bruno Buchmayr +6 more
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TLDR
In this article, the roller straightening as the fin of a railway train was shown to have a significant influence on the rail functional properties and reliability in service life, and the residual stresses in railway rails were analyzed.Abstract:
Residual stresses in railway rails have a significant influence on the rail functional properties and reliability in service life. Already during the production, the roller straightening as the fin...read more
Citations
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Journal ArticleDOI
Theoretical analysis and numerical simulation on the process mechanism of two-roller straightening
TL;DR: In this article, the deformation of a two-roller straightening process is analyzed by analyzing the curvature path in the roller gap, and the results verify the process mechanism of the two-rollers straightening and the design principle of roller shape.
Journal ArticleDOI
Analysis of residual stresses in rails during the straightening process
TL;DR: In this article, a quasi-static modeling method was developed by means of a quasistatic modeling instead of explicit dynamic, and the results obtained by simulations were used for the use of a Gaussian process regressor to predict the residual stresses from any initial parameters.
Journal ArticleDOI
Investigating optimal cutting configurations for the contour method of weld residual stress measurement
Ondrej Muránsky,Ondrej Muránsky,Foroogh Hosseinzadeh,Cory J. Hamelin,Yeli Traore,P J Bendeich +5 more
TL;DR: In this article, the authors examined optimal cutting configurations for the measurement of weld residual stresses (WRS) using the contour method and compared the accuracy of a conventional, single-cut configuration that employs rigid clamping is compared with novel, double-embedded cutting configurations that rely on specimen self-constraint during cutting.
Journal ArticleDOI
Three-Dimensional Finite Element Simulation of Residual Stresses in UIC60 Rails during The Quenching Process
TL;DR: In this article, a 3D non-linear stress analysis model has been applied to estimate stress fields of an UIC60 rail in the quenching process, and a cooling mechanism with water spray is simulated applying the elastic-plastic finite element analysis for the rail.
3D finite element simulation of residual stresses in UIC60 rails during the quenching process
TL;DR: In this article, a three-dimensional nonlinear stress analysis model has been applied to estimate stress fields of an UIC60 rail in the quenching process, and a cooling mechanism with water spray is simulated applying the elastic-plastic finite element analysis for the rail.
References
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Book
Mechanics of Solid Materials
TL;DR: In this article, the physical mechanisms of deformation and fracture are discussed, including linear elasticity, thermo-elasticity, and viscoelastic properties of real solids.
Journal ArticleDOI
Constitutive equations for cyclic plasticity and cyclic viscoplasticity
TL;DR: In this paper, the cyclic constitutive equations developed and used at ONERA and LMT-Cachan are presented in detail in terms of a hierarchy of various models, including the Ohno-Kachi time-independent plasticity theory, two unified viscoplastic models by Walker and by Krempl and Yao, the new developments of the endochronic theory by Watanabe and Atluri.
Journal ArticleDOI
Cross-sectional mapping of residual stresses by measuring the surface contour after a cut
TL;DR: In this paper, a part is cut in two, and the contour, or profile, of the resulting new surface is measured to determine the displacements caused by release of the residual stresses.
Journal ArticleDOI
Residual stress distributions and their influence on fatigue lifetimes
G. A. Webster,A.N. Ezeilo +1 more
TL;DR: In this paper, a non-destructive method for measuring residual stresses in structural engineering components is described. But the method is not suitable for the analysis of the residual stress distributions introduced by welding and the beneficial stresses produced by autofrettage, cold hole expansion and shot peening.
Journal ArticleDOI
A study on kerf and material removal rate in wire electrical discharge machining based on Taguchi method
Nihat Tosun,Can Cogun,Gul Tosun +2 more
TL;DR: In this paper, the effect and optimization of machining parameters on the kerf (cutting width) and material removal rate (MRR) in wire electrical discharge machining (WEDM) operations were investigated.
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Finite element simulation and calculation analysis on the straightening and deformation of heavy rail finite element
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