Non-linear FEM analysis for ship panels under thermal loads

  • George Ciprian Iatan S.C. VARD S.A. Braila
  • Elisabeta Burlacu EUXIN MARINE DESIGN
  • Leonard Domnișoru “Dunarea de Jos” University of Galati
Keywords: welding, FEM, thermal-structural-elastic-plastic analysis

Abstract

During the past decade, welding remained the main technological procedure for joining steel components in shipbuilding industry. Though it has great benefits, welding is an aggressive process that introduces high stress and strains in the joined materials, causing distortion. Finite element method is an important instrument for predicting how structures are behaving under thermal loads. This paper is focused on studying the behaviour of small thickness ship panels, under straightening treatment, by performing thermal-structural-elastic-plastic analysis in Femap/NX Nastran. The proposed panel is tested under three different thermal loadings in order to study stresses and residual distortion.

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References

[1]. Saeed S., Eslam R., Mehdi I. “Effect of sequence and stiffener shape on welding distortion of stiffened panel”, Journal of Constructional Steel Research 149, 2018, p. 41- 52.
[2]. Iatan C. “Non-linear finite element analysis of ship panels under thermal loads from technological process. Evaluation of the residual plastic strains and deformations”, Master Thesis, Faculty of Naval Architecture, Galati 2020.
[3]. Structural Damage Control, Inc. “Heatstraightening repairs of damaged steel bridges, Federal Highway Administration”
[4]. FNN 2020 Femap/NX Nastran user’s guide, Simens PLM Software Inc.
Published
2020-12-15
How to Cite
1.
Iatan G, Burlacu E, Domnișoru L. Non-linear FEM analysis for ship panels under thermal loads. Annals of ”Dunarea de Jos” University of Galati. Fascicle XI Shipbuilding [Internet]. 15Dec.2020 [cited 23Sep.2021];43:95-02. Available from: https://www.gup.ugal.ro/ugaljournals/index.php/fanship/article/view/4018
Section
Articles

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