Deformation mechanism analysis of roll forming for Q&P980 steel based on finite element simulation

  • Fei HanEmail author
  • Yun Wang
  • Li-li Niu
Original Paper


Roll forming is a sheet metal forming process, which can form the profiles gradually to improve the formability of Q&P980 steel. The plastic deformation mechanism of roll forming was expounded by analysing the stress and strain distribution at the corner of a hat-type profile when the Q&P980 steel sheet passed through a series of continuous stands. And the plastic deformation mainly accumulated when the sheet metal was not in contact with the rolls. A simple mathematical model was derived by considering the longitudinal bending strain and the geometrical relationships of forming parameters, to analyse the longitudinal strain development in the deformation process. In addition, the roll forming experiments on hat-type profile parts of Q&P980 steel were carried out, and the theoretical analysis and simulation results are consistent with the experimental results.


Roll forming Numerical simulation Q&P980 steel Deformation area 



The authors are grateful to the National Natural Science Foundation of China (NSFC) (Nos. 50905001 and 51074204), Beijing Municipal Natural Science Foundation (No. 3112010) and Beijing Municipal Natural Science Foundation–Beijing Municipal Education Commission (No. KZ201910009011) for their financial support. Also, thanks are given to the Beijing Youth Talent Support Program (No. 2014000026833ZK12) and Yujie Talent Support Program of North China University of Technology (No. 18XN154-005).


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Copyright information

© China Iron and Steel Research Institute Group 2019

Authors and Affiliations

  1. 1.School of Mechanical and Materials EngineeringNorth China University of TechnologyBeijingChina

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