The Paton Welding Journal, 2007, №09

2007 №09 (03)

2007 №09 (05)

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The Paton Welding Journal, 2007, #9, 17-22 pages

Mathematical modelling of thermal straightening of cylindrical shells and shafts with distortions along their longitudinal axis

O.V. Makhnenko, A.F. Muzhichenko

E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.

Abstract
Numerical study of the deformed state of cylindrical shells in local heating was performed using thermoplastic analysis and finite element method. Calculation algorithms and procedure for determination of parameters of thermal straightening, based on the approximate method of shrinkage function, were developed. The procedure was used for thermal straightening of long cylindrical shells with general distortion deformations of their longitudinal axis caused by circumferential butt welds, as well as straightening of long auger shafts with longitudinal deflection deformations.
Keywords: welded cylindrical shells, deformations, thermal straightening, numerical study, calculation algorithms, procedure

References

1. Kuzminov, S.A. (1974) Welding strains of ship hull structures. Leningrad: Sudostroenie.
2. Mikhajlov, V.S. (1972) Straightening of welded ship hull structures. Leningrad: Sudostroenie.
3. Makhnenko, V.I. (1976) Calculation methods for investigation of kinetics of welding stresses and strains. Kiev: Naukova Dumka.
4. Makhnenko, V.I., Velikoivanenko, E.A., Pochinok, V.E. et al. (1999) Numerical methods for the predictions of welding stresses and distortions. In: Welding and Surfacing Rev., Vol. 13, Part 1. Harwood A.P.

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Suggested Citation

O.V. Makhnenko, A.F. Muzhichenko (2007) Mathematical modelling of thermal straightening of cylindrical shells and shafts with distortions along their longitudinal axis. The Paton Welding J., 09, 17-22.

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