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Mechanical Sciences An open-access journal for theoretical and applied mechanics
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Volume 8, issue 1
Mech. Sci., 8, 137-154, 2017
https://doi.org/10.5194/ms-8-137-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Mech. Sci., 8, 137-154, 2017
https://doi.org/10.5194/ms-8-137-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 02 Jun 2017

Research article | 02 Jun 2017

Automated local line rolling forming and simplified deformation simulation method for complex curvature plate of ships

Yao Zhao1,2, Changcheng Hu1, Hongbao Dong1, and Hua Yuan1 Yao Zhao et al.
  • 1School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
  • 2Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration (CISSE), Shanghai, 200240, P. R. China

Abstract. Local line rolling forming is a common forming approach for the complex curvature plate of ships. However, the processing mode based on artificial experience is still applied at present, because it is difficult to integrally determine relational data for the forming shape, processing path, and process parameters used to drive automation equipment. Numerical simulation is currently the major approach for generating such complex relational data. Therefore, a highly precise and effective numerical computation method becomes crucial in the development of the automated local line rolling forming system for producing complex curvature plates used in ships. In this study, a three-dimensional elastoplastic finite element method was first employed to perform numerical computations for local line rolling forming, and the corresponding deformation and strain distribution features were acquired. In addition, according to the characteristics of strain distributions, a simplified deformation simulation method, based on the deformation obtained by applying strain was presented. Compared to the results of the three-dimensional elastoplastic finite element method, this simplified deformation simulation method was verified to provide high computational accuracy, and this could result in a substantial reduction in calculation time. Thus, the application of the simplified deformation simulation method was further explored in the case of multiple rolling loading paths. Moreover, it was also utilized to calculate the local line rolling forming for the typical complex curvature plate of ships. Research findings indicated that the simplified deformation simulation method was an effective tool for rapidly obtaining relationships between the forming shape, processing path, and process parameters.

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A three-dimensional elastoplastic finite element method was first employed to perform numerical computations for local line rolling forming, according to the characteristics of strain distributions, a simplified deformation simulation method, based on the deformation obtained by applying strain was presented. This simplified deformation simulation method was verified to provide high computational accuracy, and this could result in a substantial reduction in calculation time.
A three-dimensional elastoplastic finite element method was first employed to perform numerical...
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