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Distortion analysis of heat spot straightening thin-walled welded structures: part 2: analytical-numerical approach

  • An analytical model based on a theoretical model established in the previous work (part 1) is developed. The analytical model considers the particular case of an instantaneous high-density heat source acting on a thin pre-stressed plate. It calculates the plastic strain and the area of the zone of plastic deformation. A theoretical study is performed in order to quantify the major factors that influence the plastic strain formation. Furthermore, the work presents a calculation procedure for distortion analysis of lar ge and complex structures, intended to be used for solving industrial tasks. The calculation procedure consists of a combination of the analytical solution and an elastic finite element analysis with the aid of the inherent strain approach. Various aspects of its application are also discussed. The calculation procedure is finally explained using a simple example. Its reliability and practicability are demonstrated through verification and validation studies. The work is dedicated to the thermal straightening ofAn analytical model based on a theoretical model established in the previous work (part 1) is developed. The analytical model considers the particular case of an instantaneous high-density heat source acting on a thin pre-stressed plate. It calculates the plastic strain and the area of the zone of plastic deformation. A theoretical study is performed in order to quantify the major factors that influence the plastic strain formation. Furthermore, the work presents a calculation procedure for distortion analysis of lar ge and complex structures, intended to be used for solving industrial tasks. The calculation procedure consists of a combination of the analytical solution and an elastic finite element analysis with the aid of the inherent strain approach. Various aspects of its application are also discussed. The calculation procedure is finally explained using a simple example. Its reliability and practicability are demonstrated through verification and validation studies. The work is dedicated to the thermal straightening of thin-walled welded structures; however, it can also be related to other processes.show moreshow less

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Metadaten
Author: Nikolay DoynovORCiD, Vesselin MichailovORCiDGND
URL:https://link.springer.com/article/10.1007%2Fs00170-017-1214-0
DOI:https://doi.org/10.1007/s00170-017-1214-0
ISSN:0268-3768
ISSN:1433-3015
Title of the source (English):International Journal of Advanced Manufacturing Technology
Document Type:Scientific journal article peer-reviewed
Language:English
Year of publication:2018
Tag:Computational welding mechanics; Distortion analysis; Finite element analysis; Inherent strain method; Thermal straightening; Virtual manufacturing
Volume/Year:95
Issue number:1-4
First Page:469
Last Page:478
Faculty/Chair:Fakultät 3 Maschinenbau, Elektro- und Energiesysteme / FG Füge- und Schweißtechnik
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