Distributions and Influence Factors of Residual Stresses Induced by Oxygen Cutting Opening in Steel Structure

Abstract:

Oxygen cutting is the principal method for temporary hatch opening in hull structure. Residual stresses induced by oxygen cutting have a large influence on subsequent sealing and structure safety. Based on oxygen cutting theory, a heat source model was proposed with the combination of preheating flame and reaction heat between iron and oxygen, and a model was presented to simulate the cutting process on the basis of thermal elastoplastic FEM analysis, including the temperature and stress distribution. An oxygen cutting experiment was performed, in which an infrared radiation was used for surface temperature measurement. The residual stresses were measured by impact-indentation measurement. As a result, the calculation results were consistent with experiment values. The research concluded that there is a region in which the tensile stresses values exceed the yield point of material along the kerf, and the width of this region will be influenced by cutting velocity, opening dimension and longitudinal constraints.

• Periodical: Advanced Materials Research (Volumes 314-316)
• Pages: 437-447
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.314-316.437
• Online since: August 2011
• Authors: Zhi Yuan Wei, Yu Jun Liu, Bo Zhou
• Keywords: Hatch Opening, Numerical Simulation, Oxygen Cutting, Residual Stress, Temperature Field

References

[1] T.D. Huang, P. Dong and L. Decan: Journal of Ship Production Vol. 20 (2004), p.43

[2] A. Kotousov: International Journal of Fracture Vol. 103 (2000), p.361

[3] W. O' Neill, J.T. Gabzdyl: Optics and Lasers in Engineering Vol. 34 (2000), p.355

[4] P. Dong, P. Cahili and Z. Yang: Journal of Ship Production Vol. 20 (2004), p.245

[5] G V. Ermolaev, O.B. Kovalev and A.M. Orishich: Journal of Physics D: Applied Physics Vol. 39 (2006), p.4236

[6] B S. Yilbas, A F M. Arif and C. Karatas: Applied Surface Science Vol. 253 (2007), p.5544

[7] A F M. Arif, B S. Yilbas and B.J. Abdulaleem: Optics and Laser Technology Vol. 41 (2009), p.224

[8] Bo Zhou, Yujun Liu and Zhuoshang Ji: Journal of Ship Production Vol. 25 (2009), p.14

[9] Guifang Liang, in: Cutting Technical Manual, edited by China Machine Press, Beijing (1997), in press. (In Chinese)

[10] D. Radaj, in: Hear Effects of Welding; Temperature field, residual stress, distortion, edited by China Machine Press, Beijing (1997), in press. (In Chinese)

[11] Xuebiao Zhang, Yujun Liu and Xuefeng Hu: Journal of Harbin Engineering University Vol. 30 (2009), p.239 (In Chinese)