Distortion analysis of heat spot straightening thin-walled welded structures: part 1: formation of the plastic deformation zone

The work deals with the elastic-plastic thermo-mechanical deformation process after spot heating of large thin plates. It promotes a new theoretical model of the process. The main target is to clarify the kinetics of the plastic strain formation during thermal straightening and to explore the main i...

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Bibliographic Details
Published in:International journal of advanced manufacturing technology 2018, Vol.94 (1-4), p.667-676
Main Authors: Doynov, Nikolay, Michailov, Vesselin Georgiev
Format: Article
Language:English
Subjects:
CAE) and Design
Computer-Aided Engineering (CAD
Deformation
Elastic deformation
Engineering
Industrial and Production Engineering
Mathematical models
Mechanical Engineering
Media Management
Original Article
Plastic deformation
Plastic strain
Straightening
Strain
Thermomechanical treatment
Thin plates
Welded structures
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Summary:The work deals with the elastic-plastic thermo-mechanical deformation process after spot heating of large thin plates. It promotes a new theoretical model of the process. The main target is to clarify the kinetics of the plastic strain formation during thermal straightening and to explore the main interactions. For this purpose, a simplified mechanical problem is formulated and applied. As a result, definite thermo-mechanical relations between temperature, initial strain, and accumulated plastic strain are obtained. Finally, a verification study is presented and discussed. The results contribute to extending the knowledge about the process and to establishing a theoretical background for development of applied analytical or analytical-numerical approaches for practical use in the designing and planning phases in welding production. An application to a particular case is described in an accompanying paper (part 2).
ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-017-0911-z