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Predictive and control models of the spring-back in thick hull plate forming

  • Lin-Zhi Xu
  • Wei Shen
  • Ren-jun Yan
Original Research
  • 56 Downloads

Abstract

Hull complex plates are multidimensional curvature plates. It is difficult to adopt the traditional hot-forming method to process doubly or multiple curved plates. Multi-point forming automation equipment is a new forming process for 3D ship hull plate. However, the loading punches of traditional multi-point forming equipment are often designed in the point contact, which is easy to cause a series of defects, such as local indentations and wrinkle defects. The improved multi-point forming model with surface contact was proposed and verified with test methods. Moreover, the cold-forming process and spring-back process were simulated and analyzed with FEM for the improved multi-point forming model. The validity of the numerical method was confirmed by a series of experimental results. Finally, to ensure the forming precision, the successive approximation method was developed and verified to control the spring-back in cold-forming for curved hull plates.

Keywords

Multi-point forming Spring-back prediction FEM Processing control Successive approximation method 

Notes

Acknowledgments

The authors would like to thank Professor Cheng-fang Wang, Yong Hu, Ping Yuan and Shuang-ying Li from Wuhan University of Technology, for their preliminary exploratory research.

Funding

The research project is supported by Hubei Provincial Natural Science Foundation of China (Grant No. 2018CFB607) and the Fundamental Research Funds of the Central Universities (No. 2017IVB002).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer-Verlag France SAS, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Key Laboratory of High Performance Ship Technology (Wuhan University of Technology), Ministry of EducationWuhanChina
  2. 2.School of TransportationWuhan University of TechnologyWuhanChina

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