Abstract
Study on the mechanism and the suppression method of wrinkling in side wall of the aluminum alloy fairing using hydroforming, and the side wall is suspended curved surface shell. The wrinkling problem of side wall is analyzed on conical parts by combined with the theoretical calculation, finite element method (FEM) and experimental verification. To reduce the complexity of forming, the suspended surface is divided into several parts, and they are analyzed by theoretical calculation and FEM to discuss the rationality of the two schemes, which is proposed. And the critical strain is the wrinkling evaluation index, the size, and the amplitude of the critical strain can be the qualitative analysis of wrinkling trend. The suspended surface is divided into two regions, the trend of material flow is studied in the geometric view, and predicts the possibility of the wrinkling. The wrinkling of the suspended surface is not only related with the geometry of the part, but also be related with the loading path. It is controlled the qualitative analysis of wrinkling by adjusting the parameters about loading path, and get the relationship of pressure and punch stroke when the wrinkle happens. The qualified parts can be obtained in each process through optimized the parameters in the process of loading.
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Sun, Z., Lang, L., Li, K. et al. Study on the mechanism and the suppression method of wrinkling in side wall using hydroforming of the fairing. Int J Adv Manuf Technol 90, 2527–2535 (2017). https://doi.org/10.1007/s00170-016-9606-0
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DOI: https://doi.org/10.1007/s00170-016-9606-0