Abstract
Two-axis roll-bending technology, with the advantages of small curvature radius, short straight section and high efficiency, is widely used in fields of aerospace and automobile. By adjusting indentation depth in two-axis roll-bending process, different curvature radius of circular and elliptic component can be formed. Roll-bending experiments and numerical simulations for component with circular and elliptic section are conducted. The results show that the forming curvature radius of circular component and its deviation both decrease with ascending indentation depth. The relationship between forming curvature radius and indentation depth is polynomial fitted. On this basis, ellipse parameter equation is established and different curvature radius at different position of the ellipse is achieved by adjustment of indentation depth. The relationship between indentation depth and forming time is obtained for elliptic component. Elliptic components with different sizes are formed. The stress distribution is uniform after roll-bending process and it increases with ascending indentation depth.
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Acknowledgments
This work was supported by the the financial support by National Natural Science Foundation of China (No. 5170 5248), Science and technology planning project of Jiangsu Province (No. BE2016179), Natural Science Foundation of Jiangsu pvovince, China (No. BK20170785) and Open Research Fund of State Key Laboratory for High Performance Complex Manufacturing, Central South University (Kfkt2017-08).
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Tao Zhang is a Lecturer in College of Mechanic and Electrical Engineering, Nanjing University of Aeronautics and Astronautics. He received his Doctor’s degree in Mechanical Engineering from Central South University. His current research interests are metal forming, modeling of forming process and microstructure evolution, additive manufacturing process.
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Zhang, T., Sha, H., Lu, S. et al. Study on flexible two-axis roll-bending process for component with non-circular section. J Mech Sci Technol 33, 4421–4429 (2019). https://doi.org/10.1007/s12206-019-0838-4
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DOI: https://doi.org/10.1007/s12206-019-0838-4