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A method for investigating the springback behavior of 3D tubes

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Abstract The objective of this paper is to investigate the springback of spatial tubes. The model for analyzing the springback of spatial tubes in [1] is extended to different loading… Click to show full abstract

Abstract The objective of this paper is to investigate the springback of spatial tubes. The model for analyzing the springback of spatial tubes in [1] is extended to different loading modes and hardening materials. Comparisons among theoretical model, FEM model and experiments are performed to validate the effectiveness of the predictions. Results show that the new model is more effective to describe the springback behavior of spatial tubes, and the principles obtained by the new model are coincident with previous researches. Based on the theoretical model, the influence of loading modes on spatial tube springback is newly investigated. It is found that radii after springback and angles after springback will both increase accordingly with the increasing of loading index k . And evaluating the loading index k reasonably is beneficial for improving the precision of prediction results.

Keywords: spatial tubes; method investigating; springback; model; springback behavior; investigating springback

Journal Title: International Journal of Mechanical Sciences
Year Published: 2017

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