Thickness distribution of a hydroformed Y-shape tube

Cheng, Du; Teng, Bugang; Guo, Bin; Shi, Yuan

doi:10.1016/j.msea.2007.09.100

Cited by 23 publications

(7 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Boudeau et al [10] used it for the T-shaped hydroforming process. Cheng et al [11] investigated the hydroforming of a Y-shaped tube with an angle of 45°u sing FE simulation and experimentation. Generally, the path of the counterpunch displacement contains some variables, such as the starting time (in seconds) (T start ), amount of displacement in (millimeters) (D counterpunch ) and termination time (T stop ) in seconds.…”

Section: (A) Internal Pressurementioning

confidence: 99%

An investigation of the optimal load paths for the hydroforming of T-shaped tubes

Kadkhodayan

Erfani-Moghadam

2011

Int J Adv Manuf Technol

View full text Add to dashboard Cite

This paper proposes a new method to design the optimal load curves for hydroforming T-shaped tubular parts. In order to assess the mathematical models, a combination of design of experiment and finite element simulation was used. The optimum set of loading variables was obtained by embedding the mathematical models for tube formability indicators into a simulated annealing algorithm. The adequacy of the optimum results was evaluated by genetic algorithm. Using this method, the effect of all loading paths was considered in hydroforming of T-shaped tubes. Eliminating of variables with lower effect could simplify the problem and help designers to study the effect of other parameters such as geometrical conditions and loading parameters. Applying the optimal load paths obtained with the proposed method caused an improvement in the thickness distribution in the part as well as a decrease in maximum pressure.

show abstract

Section: (A) Internal Pressurementioning

confidence: 99%

An investigation of the optimal load paths for the hydroforming of T-shaped tubes

Kadkhodayan

Erfani-Moghadam

2011

Int J Adv Manuf Technol

View full text Add to dashboard Cite

show abstract

“…The advantages of the method in question include reduction of the number of welded joints in structures and of the amount of special equipment, as well as obtaining parts with thinner walls, better dimensional tolerance and surface condition [10][11][12][13]. The disadvantage of this forming method is slow production cycle and high cost of tools.…”

Section: Introductionmentioning

confidence: 99%

Exhaust system piping made by hydroforming: relations between stresses, microstructure, mechanical properties and surface

Kucharska

Moraczyński

2020

Archiv.Civ.Mech.Eng

View full text Add to dashboard Cite

The subject of research is car exhaust system piping made of chromium–nickel steel of grade AISI304L with a unique, complex shape that was obtained by hydroforming technology. The purpose of the research was to determine the relation between the microstructure features, surface condition, hardness and the stresses on the external surface as determined by the sin2ψ X-ray method. We found that the stresses were tensile and correlated with the steel hardness, i.e. they were greater where the hardness was higher. Moreover, longitudinal stresses showed a relationship with pipe wall thickness, while circumferential stresses did so only partially. According to our data, the greatest value of stress determined in the pipe amounted to 290 MPa, and was close to the yield point of the strain hardened 304L steel. As depicted via XRD and SEM examination, the pipe stress level and hardness were influenced by the transition γ→α’. Furthermore, in the region of higher stress and hardness, the amount of martensite was 10 vol.%. We also noted that the pipe’s outer surface when subjected to friction against the die shows lesser roughness compared to its inner surface upon exposure to water under pressure.

show abstract

“…In addition, Cheng et al [18] conducted simulation and experiments for hydroforming Y-shape tubes using annealed copper tubes. They found that the minimum wall thickness was at the top of a protrusion with maximum thinning of 33%.…”

Section: Introductionmentioning

confidence: 99%

A new method to produce T-shaped tubular fittings with experimental and simulation results

et al. 2019

View full text Add to dashboard Cite

A tube is an important structural element for fluid manipulation in piped networks in many industries. Tube branching is achieved using tube fittings of various shapes, including T, Y, X, and L shapes. This study proposes a new innovative technique to produce T-shaped tubular fittings. The technique uses a specially designed die setup where a tube is placed inside a T-shaped die cavity and a metallic insert is used to deform the tube into the cavity, creating the T-fitting shape. Experimental and numerical methods are used to evaluate the process. The main outcome of this research is the successful creation of T-shaped copper tube fittings using a technique similar to tube hydroforming without the need for internal pressure. This technique could be modified to assist the production of T-fittings with thicknesses outside the hydroforming limits.

show abstract

Thickness distribution of a hydroformed Y-shape tube

Cited by 23 publications

References 2 publications

An investigation of the optimal load paths for the hydroforming of T-shaped tubes

An investigation of the optimal load paths for the hydroforming of T-shaped tubes

Exhaust system piping made by hydroforming: relations between stresses, microstructure, mechanical properties and surface

A new method to produce T-shaped tubular fittings with experimental and simulation results

Contact Info

Product

Resources

About