Simulative Study of Evolution Behavior of Transverse Surface Crack in Rolling Process

Ya Gao; Jian Lin Sun; Bing Yun

doi:10.4028/www.scientific.net/AMR.403-408.88

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 403-408Simulative Study of Evolution Behavior of...

Simulative Study of Evolution Behavior of Transverse Surface Crack in Rolling Process

Abstract:

Based on explicit finite difference algorithm, finite element model of steel plate with transverse surface crack in rough rolling was found. The evolution regularity of transverse surface crack in rolling process was calculated with the model, and effect of different crack sizes, different friction coefficients and different roll diameters on crack evolution were studied. The research indicated that, in rolling direction, the crack tip stress changed from tensile stress to compression stress and then tensile stress again; length and depth of crack both had effect on the healing and propagation of the crack, and mostly in the way of influencing displacement of freedom surface of the crack; different friction coefficients showed no effect on crack tip propagation, but low friction coefficient would be in favor of crack healing at crack bottom; small roll diameter would lead to high crack tip tensile stress and more propagation at crack tip.

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Periodical:

Advanced Materials Research (Volumes 403-408)

Pages:

88-92

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.403-408.88

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Online since:

November 2011

Authors:

Ya Gao, Jian Lin Sun, Bing Yun

Keywords:

Contact Pressure, Crack Tip Stress, Finite Element Model (FEM), Transverse Surface Crack

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