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Research on the influence of nonlocal effect on specific roll pressure by nonlocal stress gradient model in strip rolling

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Abstract

In this paper, a nonlocal stress gradient model based on nonlocal theory has been developed to research the influence of the nonlocal effect on the specific roll pressure in strip rolling. In order to obtain the higher-order stress terms in the nonlocal stress gradient model, the local stress in Eringen’s nonlocal integral model is expressed as the form of a series by Taylor expansion. By comparisons of the experimental data with the results predicted by the nonlocal stress gradient model and the local model, it is found that the application of the nonlocal stress gradient model can lead to a better solution. Meanwhile, the effect of the material characteristic parameter, the friction coefficient, and the reduction on the non-dimensional pressure difference (nonlocal effect) is discussed.

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Authors and Affiliations

  1. Key Laboratory of Metallurgical Equipment and Control Technology, Ministry of Education, Wuhan University of Science and Technology, Wuhan, 430081, China

    Si Li, Zhigang Wang, Jinhua Ruan, Changming Liu & Zengbing Xu

  2. Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering, Wuhan University of Science and Technology, Wuhan, 430081, China

    Si Li, Zhigang Wang, Jinhua Ruan, Changming Liu & Zengbing Xu

Authors
  1. Si Li
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  2. Zhigang Wang
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  3. Jinhua Ruan
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  4. Changming Liu
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  5. Zengbing Xu
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Correspondence to Zhigang Wang.

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Li, S., Wang, Z., Ruan, J. et al. Research on the influence of nonlocal effect on specific roll pressure by nonlocal stress gradient model in strip rolling. Int J Adv Manuf Technol 94, 1857–1862 (2018). https://doi.org/10.1007/s00170-017-0994-6

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