Study on the mechanism and the suppression method of wrinkling in side wall using hydroforming of the fairing

Sun, Zhiying; Li, Lihui; Li, Kui; Wang, Yao; Zhang, Quanda

doi:10.1007/s00170-016-9606-0

Cited by 6 publications

(3 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Aiming at the low formability of FVS0812 hemispherical parts, Tao [9] carried out overlapping sheet forming on both sides of the target sheet using sheet with high strength, large thickness, and good plasticity, and the obtain parts meet the requirements Yilamu et al [10] studied the springback of aluminum sheet bending, and obtained aluminum sheet bending parts with smaller springback by overlapping the outside of the aluminum sheet with a stainless steel sheet. In the inverse pressure hydroforming, Lang et al [11] qualitatively analyzed the relationship between wrinkling and critical strain in inverse hydrolic deep drawing of conical parts. By adjusting the loading path, the wrinkling in the suspended area of the side wall was effectively controlled, and the conical part with no wrinkling on the side wall was successfully obtained.…”

Section: Introductionmentioning

confidence: 99%

Viscous backpressure forming and feasibility study of hemispherical aluminum alloy parts

Gao

Zhang

Wang³

2022

Int J Adv Manuf Technol

View full text Add to dashboard Cite

Hemispherical aluminum alloy parts are extensively used in modern aerospace and other manufacturing elds. However, wrinkling and cracking easily occur due to the large deformation of the parts, which leads to a complicated forming process. This research proposes a viscous backpressure forming method for hemispherical aluminum alloy parts. The forming limit diagram of LF2 sheet is established through the forming limit experiments. By the combination of nite element analysis and experimental veri cation, the forming process of the parts under different viscous backpressure and loading path conditions as well as the distribution law of stress-strain and wall thickness of the parts, are obtained. By comparing with the forming limit diagrams, technical feasibility of this forming process is discussed. The research results show that quali ed parts can be formed using the viscous backpressure forming method under the conditions of viscous backpressure loading throughout the process with the backpressure at or above 12MPa. This provides a reference for the backpressure forming of hemispherical aluminum alloy parts.

show abstract

Section: Introductionmentioning

confidence: 99%

Viscous backpressure forming and feasibility study of hemispherical aluminum alloy parts

Gao

Zhang

Wang³

2022

Int J Adv Manuf Technol

View full text Add to dashboard Cite

show abstract

“…For clarifying the ability of this process, sheet hydroforming has been subjected of many research works. For the hydroforming of the blank part, Thiruvarudchelvan and Ahmetoglu [11,12] all pointed out that the forming limit of blank part can be improved using the hydroforming process, and Sun et al [13] studied the hydroforming process of the aluminum alloy fairing of which the raw material was sheet metal and the key problems such as forming mechanism and the restraint of the wrinkling in the process were discussed.…”

Section: Introductionmentioning

confidence: 99%

An investigation into the production of a large-scale automotive part included small features using hydraulic sequential forming method

Zhang

Lang

Sherkatghanad

et al. 2018

J Braz. Soc. Mech. Sci. Eng.

Self Cite

View full text Add to dashboard Cite

Aiming at the requirement of the formability and the surface quality of the large-scale aluminum alloy such as AA6016-T4, utilized in the automotive component with complicated structures, a sequential forming process is proposed. This method consists of sheet hydroforming technology and local shaping with rigid tools. Firstly, according to the hydroforming process, the small curvature surfaces with excellent surface quality and the partial deformation of the local small features are obtained. After that, the method of local shaping with rigid tools is adopted and causes to reduce the equipment tonnage. In this research, the sequential forming process is studied on the basis of numerical simulations and experiments. At the same time, substituting the conventional mechanical test, the influences of different loading modes on the mechanical properties of the material are studied further from the viewpoint of the microstructure analysis. So when the different forming process is finished, the material in different areas is sampled and the microstructure evolution law is observed. The research results are illustrated that the excellent agreement is found through the analysis and the comparison of the wall thickness values on different measuring sections in the experiments and simulations results and the part with excellent quality is obtained. Meanwhile, it is found that the change degree of the microstructure of the small local features in the local shaping is more intense than the hydroforming process, and the grain sizes in the local shaping are smaller than the hydroforming process, and it is illustrated that the sequential forming is essential to the production of the aluminum alloy part with excellent surface quality and accurate structure size.

show abstract

“…Qualitative analysis of wrinkling is controlled 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 by optimising the parameters in the process of loading [2]. Figure 2 shows different stages of the hydroforming process.…”

Section: Introductionmentioning

confidence: 99%

Research on Inner Surface of Tubes Hydroformed

Ceclan¹,

Grozav²,

Kuric³

2017

Adv. Sci. Technol. Res. J.

View full text Add to dashboard Cite

In this paper a reserch regarding the surfece of hydroforming tubs, made by aluminium and cooper is presented. Tube hydroforming is very important production method considering that metal tubes are widely used in a great variety of engineering products, such as automobile, aircraft, air conditioner, air compressor, exhaust systems, fluid lines. The results show that the surface of tubes it is influence of the hydroforming process. the material of the tube in research of surface is also very important.

show abstract

Study on the mechanism and the suppression method of wrinkling in side wall using hydroforming of the fairing

Cited by 6 publications

References 18 publications

Viscous backpressure forming and feasibility study of hemispherical aluminum alloy parts

Viscous backpressure forming and feasibility study of hemispherical aluminum alloy parts

An investigation into the production of a large-scale automotive part included small features using hydraulic sequential forming method

Research on Inner Surface of Tubes Hydroformed

Contact Info

Product

Resources

About