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  • 2017: 6th Engineering, Science and Technology Conference - Panama (ESTEC 2017)
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Development of a Practical Straightening Simulation for Welded Structures Using Inherent Strain Method

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Author
Hector, Ruiz
Naoki, Osawa
Hidekazu, Murakawa
Hidekazu, Murakawa
Sherif, Rashed
Hector, Ruiz
Naoki, Osawa
Hidekazu, Murakawa
Hidekazu, Murakawa
Sherif, Rashed
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Abstract
Welding is the most widely used assembly method available to industries in the construction of metal structures, ships, and offshore platforms. However, this method always produces a certain amount of distortion that will not only degrade the performance but also increase the building cost of the structure, and it should be straightened. Murakawa [1] developed a thermal elastic plastic based and inherent strain based welding simulation FE code JWRIAN. Coarse shell FE models are usually used in the inherent strain based JWRIAN elastic analyses. This drastically reduces the manpower needed for modeling and computer resources needed for the calculation. However, it is not easy to perform straightening analysis using JWRIAN because gas heating’s inherent strain distributes over a range much smaller than element sizes of the shell model.RUIZ [2] modified JWRIAN’s code so that the inherent strain equivalent nodal forces along the heating line are calculated and applied in the elastic shell analysis. However, a discrepancy between 3-dimensional thermal-elastic-plastic analysis and elastic analysis was observed. This is mainly because of the nature of solid and shell elements. RUIZ [3] proposed a linearized inherent strain and applied it to both 3-d and 2d analysis, getting matching results between solid and shell element models. In this study, as a working example, a thin plate panel with an opening is considered utilizing the developed system at the same time a friendly user interface for staffs and workers on a production site is developed.  Keywords: Inherent strain, straightening, finite element method, Gauss-Legendre quadrature
URL
https://knepublishing.com/index.php/KnE-Engineering/article/view/1438
10.18502/keg.v3i1.1438
URI
http://ridda2.utp.ac.pa/handle/123456789/4274
Collections
  • 2017: 6th Engineering, Science and Technology Conference - Panama (ESTEC 2017) [115]
License
info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/4.0/

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Recolectado por:

El OAI de este repositorio: http://ridda2.utp.ac.pa/oai/
Repositorio Institucional de Documentos Digitales de Acceso Abierto de la Universidad de Tecnológica de Panamá.
Este repositorio utiliza la Licencia CC BY-NC-SA y funciona bajo DSpace.

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