Analysis of residual stresses in hot-rolled complex beams

Marcelin, Jean-Luc; Abouaf, M.; Chenot, Jean‐Loup

doi:10.1016/0045-7825(86)90133-7

Cited by 19 publications

(17 citation statements)

References 8 publications

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“…Abouaf and coworkers [15] validated their analysis, on which the generalised plane strain analysis described here was based, by comparing their predicted residual stresses at the three points D, E, F in a hot-rolled rail, air-cooled from 1300 to 300 K, with those measured by the hole-drilling method (Table 4). They did not discuss the difference between their computed and measured stresses, describing the agreement as "reasonably good".…”

Section: Residual Stress In Air-cooled Rail Sectionmentioning

confidence: 98%

“…The temperature was logged at a frequency of 0.5 Hz with three thermocouples of N-type located to match the positions identified by Abouaf and coworkers. The temperature field in the rail was computed using LUSAS [6] as described previously, Table 4 Comparison between computed and measured longitudinal stresses in a rail section [15] Location…”

Section: Residual Stress In Air-cooled Rail Sectionmentioning

confidence: 99%

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Prediction of the deflection and residual stress in controlled cooling of hot-rolled steel beams including load and arbitrary support

Boyadjiev

Thomson

Lam

2004

Journal of Materials Processing Technology

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Section: Residual Stress In Air-cooled Rail Sectionmentioning

confidence: 98%

Section: Residual Stress In Air-cooled Rail Sectionmentioning

confidence: 99%

Prediction of the deflection and residual stress in controlled cooling of hot-rolled steel beams including load and arbitrary support

Boyadjiev

Thomson

Lam

2004

Journal of Materials Processing Technology

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“…The thermo-mechanical properties of Carbon steel as a function of temperature were extracted from literature (i.e., [15,18,19,[43][44][45][46][47]). The normalised value of each property ( Fig.…”

Section: Steel Thermo-mechanical Propertiesmentioning

confidence: 99%

“…Two dimensional analyses were later on conducted (e.g., [17][18][19]) and, more recently, three dimensional finite element analyses were used to predict residual stresses (e.g., [20][21][22]). Although the thermomechanical behaviour of structural steel sections under various cooling regimes was extensively studied both experimentally and analytically in the past, the modelling of this behaviour is still an interesting topic among investigators.…”

Section: Introduction and Scopementioning

confidence: 99%

Column curves for elliptical hollow section members

Nowzartash

Mohareb

2011

Journal of Constructional Steel Research

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“…A common assumption is that the section leaves the last rolling mill under no state of stress because of the high temperatures [15] .…”

Section: Description Of the Problemmentioning

confidence: 99%

Analysis of rail cooling strategies through numerical simulation with instant calculation of thermal expansion coefficient

et al. 2010

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This article describes a new methodology to simulate the cooling process for an asymmetrical Ri60 grooved rail, designed for city tramways, in a more realistic manner than that conducted previously by other authors for long steel sections. The approach considers the phase transformation of the steel and the forced convection cooling. The process is modelled as an uncoupled thermo-mechanical problem. First, the rail's temperature history is obtained from a computer fluid dynamic model and subsequently introduced in the finite element model, in order to model the stresses and displacements. This second stage involves the calculation of the thermal expansion coefficient, for each element and at each iteration. The calculation is made according to the continuous cooling transformation diagram. These results lead to the extremely reliable determination of residual stresses as proved by the comparison with experimental data obtained in the industrial plant. The methodology allows for an accurate study of two types of cooling strategies for the Ri60 and the selection of the more suitable one. KeywordsResidual stresses; Section manufacturing; Thermal expansion coefficient. Análisis de estrategias de enfriamiento de raíles mediante simulación numérica con cálculo instantáneo del coeficiente de expansión térmica ResumenEn este artículo se describe una nueva metodología para simular el proceso de enfriamiento de un rail asimétrico Ri60, diseñado para tranvías, de una forma mucho más realista que lo realizado hasta ahora para perfiles largos de acero. La propuesta considera los efectos de la transformación de fases del acero y el enfriamiento por convección forzada. El proceso es simulado como un proceso termo-mecánico desacoplado. Primero, las curvas de enfriamiento del rail son obtenidas a partir de un modelo basado en dinámica de fluidos computacional y posteriormente introducidas en el modelo de elementos finitos para calcular las tensiones y desplazamientos. En esta segunda fase se calcula, para cada elemento finito y en cada iteración, el coeficiente de dilatación térmica lineal según el diagrama de curvas de enfriamiento continuo. Estos resultados permiten determinar las tensiones residuales al final del proceso con muy buena fidelidad respecto a los datos experimentales obtenidos en la planta industrial. La metodología permite estudiar con precisión dos tipos de estrategias de enfriamiento del Ri60 y seleccionar la más conveniente. Palabras claveTensiones residuales; Fabricación de perfiles; Coeficiente de dilatación térmica lineal.

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Analysis of residual stresses in hot-rolled complex beams

Cited by 19 publications

References 8 publications

Prediction of the deflection and residual stress in controlled cooling of hot-rolled steel beams including load and arbitrary support

Prediction of the deflection and residual stress in controlled cooling of hot-rolled steel beams including load and arbitrary support

Column curves for elliptical hollow section members

Analysis of rail cooling strategies through numerical simulation with instant calculation of thermal expansion coefficient

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