Springback Analysis of Thin-Walled Stainless Steel Bellow in Hydroforming

Jing Liu; Yang Liu; Lan Yun Li; Xiao Li; Shao Fei Yang; Yan Hai Geng; Fei Yan Liu

doi:10.4028/www.scientific.net/AMR.1095.855

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1095Springback Analysis of Thin-Walled Stainless Steel...

Springback Analysis of Thin-Walled Stainless Steel Bellow in Hydroforming

Abstract:

Springback has an important influence on the forming quality of thin-walled stainless bellows hydroforming. By developing a FE model, the stress distribution is investigated and springback characteristics of two specification bellows are addressed. The results show that: (1) For tube Φ26×0.5, the maximum circumferential tensile/compressive stresses decrease by 32% and 29.1% after springback, respectively. The maximum longitudinal tensile/compressive stresses decrease by 51.8% and 39.6%, respectively. (2) Three indices are proposed to describe the bellow profile change after springback, namely, radial displacement of crown point; axial displacement of inner point; maximum convolution width. (3) For tube Φ26×0.1, after springback, the inward shrinkage of crown point increases by 0.7%, the bellow axial elongation is 0.76mm, the maximum convolution width increases by 30.3%.

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Periodical:

Advanced Materials Research (Volume 1095)

Pages:

855-858

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1095.855

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Online since:

March 2015

Authors:

Jing Liu*, Yang Liu, Lan Yun Li, Xiao Li, Shao Fei Yang, Yan Hai Geng, Fei Yan Liu

Keywords:

Bellows, Fe Simulation, Hydroforming, Springback

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