Hybrid model for prediction of welding distortions in large structures

doi:10.1007/s11706-011-0133-5

Front Mater Sci

2011, Vol. 5

Issue (2) : 209-215 https://doi.org/10.1007/s11706-011-0133-5

RESEARCH ARTICLE

Hybrid model for prediction of welding distortions in large structures

Vesselin MICHAILOV(

), Nikolay DOYNOV, Christoph STAPELFELD, Ralf OSSENBRINK

Chair of Joining and Welding Technology, Brandenburg Technical University of Cottbus, Konrad-Wachsmann-Allee 17, 03046 Cottbus, Germany

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Abstract

The paper presents a short overview of the contemporary approaches for calculating welding distortions. In order to meet the existing challenges, an advanced hybrid model for prediction of welding distortions in large structures is described. For the purpose of illustrating the capability of this model, a simulation case is put into discussion. The results are validated by comparison with experimental data, as well as with common simulation technique. Analysis of the calculation costs is also presented. The directions for development of calculation technique, based on the presented model, are also suggested.

Keywords hybrid model welding distortion calculation

Corresponding Author(s): MICHAILOV Vesselin,Email:lft@tu-cottbus.de

Issue Date: 05 June 2011

Cite this article:

Vesselin MICHAILOV,Nikolay DOYNOV,Christoph STAPELFELD, et al. Hybrid model for prediction of welding distortions in large structures[J]. Front Mater Sci, 2011, 5(2): 209-215.

URL:

https://academic.hep.com.cn/foms/EN/10.1007/s11706-011-0133-5
https://academic.hep.com.cn/foms/EN/Y2011/V5/I2/209

Fig.1 The shrinkage force calculation program “WELDIS”.

Fig.2 The flow chart of the hybrid model.

Fig.3 Complex structure: overview of the experimental arrangement, turned; position of the welds W1…W8 and clamps UX, UY, UZ; position of the inductive displacement transducers CH0…CH13.

Fig.4 Constraining of the FE-model.

Fig.5 Applied loads from the butt weld W1 and from the filled weld W7.

Fig.6 Calculated residual distortion of the structure (displacements scaling × 120).

Fig.7 Calculated displacement compared with the experimental data.

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