Numerical simulation of welding distortions in large structures with a simplified engineering approach

Scientific paper - Original scientific paper

• Author: Mato Perić
• Author: Karlo Seleš
• Author: Zdenko Tonković
• Author: Martina Lovrenić-Jugović
• Author's institution: University North; (University centre Varaždin); (Department of Mechanical Engineering)
• Author's institution: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; (Department of Engineering Mechanics); (Chair of Mechanics and Strength of Materials)
• Author's institution: University of Zagreb; Faculty of Metallurgy; (Department of Mechanical Metallurgy); (Laboratory of Thermal Technics and Mechanical Engineering)
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; General Mechanical Engineering (Construction)

Abstract (english)

This paper presents an efficient thermo-elastoplastic method for the prediction of welding-induced distortions in a large panel structure. It is based on a shell/3D modeling technique which was proposed and experimentally validated in the authors’ previous study. Two numerical examples are analyzed to evaluate the accuracy and efficiency of the present method. In the first example, the recommendations for the estimation of the minimum 3D zone size in the shell/3D model reported in the authors’ previous work are verified, in comparison with the full 3D model, on a T-joint model consisting of plates with different thicknesses. It is shown that the shell/3D modeling technique provides a significant reduction in the computational time needed for the simulation of the welding process and thus enables efficient thermo-elastoplastic analyses on large structures. In the second example, the proposed model is validated on a large panel structure by corresponding the experimental data and inherent strain solutions from the literature.

• Keywords (english): residual stress; welding distortion; Tjoint weld; large panel welding; submodeling
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Open Physics
• Numbering: vol. 17, no. 1, pp. 719-730
• BPC: 800 EUR
• e-ISSN: 2391-5471
• DOI: https://doi.org/10.1515/phys-2019-0076
• URN:NBN: urn:nbn:hr:115:637319
• Publication: 2019-12-31
• Document URL: https://www.degruyter.com/document/doi/10.1515/phys-2019-0076/html
• Type of resource: Text
• Access conditions: Open access
• Created on: 2024-05-03 08:23:52