The present work aims at better understanding and predicting the thermal and structural responses of aluminum components subjected to welding, contributing to the design and fabrication of aluminum ships such as catamarans, lifesaving boats, tourist ships, and fast ships used in transportation or in military applications. Taken into consideration the moving heat source in metal inert gas (MIG) welding, finite element models of plates made of aluminum alloy are established and validated against published experimental results. Considering the temperature-dependent thermal and mechanical properties of the aluminum alloy, thermo-elasto-plastic finite element analyses are performed to determine the size of the heat-affected zone (HAZ), the temperature histories, the distortions, and the distributions of residual stresses induced by the welding process. The effects of the material properties on the finite element analyses are discussed, and a simplified model is proposed to represent the material properties based on their values at room temperature.
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December 2019
Research-Article
Numerical Investigation on Weld-Induced Imperfections in Aluminum Ship Plates
Bai-Qiao Chen,
Bai-Qiao Chen
Centre for Marine Technology and Ocean Engineering (CENTEC),
Instituto Superior Técnico,
Avenida Rovisco Pais, 1049-001 Lisbon,
e-mail: baiqiao.chen@centec.tecnico.ulisboa.pt
Instituto Superior Técnico,
Universidade de Lisboa
,Avenida Rovisco Pais, 1049-001 Lisbon,
Portugal
e-mail: baiqiao.chen@centec.tecnico.ulisboa.pt
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C. Guedes Soares
C. Guedes Soares
1
Fellow ASME
Centre for Marine Technology and Ocean Engineering (CENTEC),
Instituto Superior Técnico,
Avenida Rovisco Pais, 1049-001 Lisbon,
e-mail: c.guedes.soares@centec.tecnico.ulisboa.pt
Centre for Marine Technology and Ocean Engineering (CENTEC),
Instituto Superior Técnico,
Universidade de Lisboa
,Avenida Rovisco Pais, 1049-001 Lisbon,
Portugal
e-mail: c.guedes.soares@centec.tecnico.ulisboa.pt
1Corresponding author.
Search for other works by this author on:
Bai-Qiao Chen
Centre for Marine Technology and Ocean Engineering (CENTEC),
Instituto Superior Técnico,
Avenida Rovisco Pais, 1049-001 Lisbon,
e-mail: baiqiao.chen@centec.tecnico.ulisboa.pt
Instituto Superior Técnico,
Universidade de Lisboa
,Avenida Rovisco Pais, 1049-001 Lisbon,
Portugal
e-mail: baiqiao.chen@centec.tecnico.ulisboa.pt
C. Guedes Soares
Fellow ASME
Centre for Marine Technology and Ocean Engineering (CENTEC),
Instituto Superior Técnico,
Avenida Rovisco Pais, 1049-001 Lisbon,
e-mail: c.guedes.soares@centec.tecnico.ulisboa.pt
Centre for Marine Technology and Ocean Engineering (CENTEC),
Instituto Superior Técnico,
Universidade de Lisboa
,Avenida Rovisco Pais, 1049-001 Lisbon,
Portugal
e-mail: c.guedes.soares@centec.tecnico.ulisboa.pt
1Corresponding author.
Contributed by the Ocean, Offshore, and Arctic Engineering Division of ASME for publication in the Journal of Offshore Mechanics and Arctic Engineering. Manuscript received October 5, 2018; final manuscript received May 8, 2019; published online June 19, 2019. Assoc. Editor: Kazuhiro Iijima.
J. Offshore Mech. Arct. Eng. Dec 2019, 141(6): 061605 (7 pages)
Published Online: June 19, 2019
Article history
Received:
October 5, 2018
Revision Received:
May 8, 2019
Accepted:
May 9, 2019
Citation
Chen, B., and Guedes Soares, C. (June 19, 2019). "Numerical Investigation on Weld-Induced Imperfections in Aluminum Ship Plates." ASME. J. Offshore Mech. Arct. Eng. December 2019; 141(6): 061605. https://doi.org/10.1115/1.4043778
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