Research on influencing factors and laws of free-bending forming limit of tube

For the free-bending forming of complex bending components, the forming limit significantly influences the complexity of the forming materials. In this study, the wrinkle factor I w , which comprehensively affects the forming limit of free-bending, was obtained by theoretical analysis. The process p...

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Bibliographic Details
Published in:International journal of advanced manufacturing technology 2020-01, Vol.106 (3-4), p.1421-1430
Main Authors: Wei, Wenbin, Wang, Hui, Xiong, Hao, Cheng, Xuan, Tao, Jie, Guo, Xunzhong
Format: Article
Language:English
Subjects:
Aluminum base alloys
Bending
CAE) and Design
Complexity
Computer simulation
Computer-Aided Engineering (CAD
Engineering
Finite element method
Forming limits
Industrial and Production Engineering
Mechanical Engineering
Media Management
Optimization
Original Article
Process parameters
Tubes
Wall thickness
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Summary:For the free-bending forming of complex bending components, the forming limit significantly influences the complexity of the forming materials. In this study, the wrinkle factor I w , which comprehensively affects the forming limit of free-bending, was obtained by theoretical analysis. The process parameters affecting the forming limit of free-bending were systematically studied by using the ABAQUS finite element simulation platform. Moreover, the effects of series of parameters on the relationship curve and wrinkling factor under different eccentricity conditions were also analyzed. The free-bending forming limit under the optimal conditions was obtained, which provides a process optimization method to improve the forming limit for practical test and production. Furthermore, the forming experiments were conducted on tubes with different wall thickness, and it was verified that the wall thickness factors significantly influenced the forming limit of the tubes. Finally, the forming experiments were carried out on 6061-T6 aluminum alloy, H2 copper, and H62 brass tubes. The results proved that the yield strength was the key material parameter affecting the forming limit of metal tubes.
ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-019-04692-0