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- W4382247812 abstract "This work aims to solve the problem that plastic instability occurs in large-scale flat ring rolling and the geometry accuracy is hard to control due to the bending moment in the radial deformation zone exceeds its ultimate bending moment, i.e. the plastic bending moment. An analytical calculation model is put forward to design the feed strategy in large-scale ring rolling process to avoid ring plastic instability. In this analytical model, the effects of ring diameter revolution, cross-section shape variation including thickness and end surface on ring plastic instability are considered, and finally are combined in an optimized stiffness condition. The radial-axial feed coordinated strategy for a large-scale flat ring with 5 m diameter deduced from the analytical model was submitted to finite element method (FEM) simulation. The shape of the ring cross-section in the deformation zone, the variation of the ring diameter and the rolling force obtained by the analytical model and the numerical simulation are compared to verify the accuracy of the analytical model. Numerical simulations and trial production have shown that this coordinated feed strategy can avoid plastic instability in ring rolling, which effectively improves the geometry accuracy of rolled ring in large-scale ring rolling. This study is valuable for achieving low cost and high accuracy in rolling of large-scale ring." @default.
- W4382247812 created "2023-06-28" @default.
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- W4382247812 date "2023-10-01" @default.
- W4382247812 modified "2023-09-23" @default.
- W4382247812 title "Analytical calculation model for radial-axial coordinated feed strategy in large-scale flat ring rolling based on ultimate bending moment" @default.
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- W4382247812 doi "https://doi.org/10.1016/j.jmatprotec.2023.118072" @default.
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