Homogenisation of the Wall Thickness Distribution of Thermoformed Cups by using Different Pre-stretch Plugs and Process Parameter Settings to Improve Material Efficiency

2020 ◽  
pp. 79-92
Author(s):  
Dennis Balcerowiak ◽  
Christian Hopmann
Keyword(s):  
Wall Thickness ◽  
Thickness Distribution ◽  
Process Parameter ◽  
Wall Thickness Distribution ◽  
Material Efficiency

scholarly journals Optimization of Superplastic Forming Process of AA7075 Alloy for the Best Wall Thickness Distribution

2021 ◽  
Vol 6 (4) ◽  
pp. 251-261
Author(s):  
Manh Tien Nguyen ◽  
Truong An Nguyen ◽  
Duc Hoan Tran ◽  
Van Thao Le
Keyword(s):  
Wall Thickness ◽  
Deformation Temperature ◽  
Numerical Optimization ◽  
Thickness Distribution ◽  
Superplastic Forming ◽  
Forming Process ◽  
Wall Thickness Distribution ◽  
Surface Method ◽  
Series Of Experiments ◽  
The Relationship

This work aims to optimize the process parameters for improving the wall thickness distribution of the sheet superplastic forming process of AA7075 alloy. The considered factors include forming pressure p (MPa), deformation temperature T (°C), and forming time t (minutes), while the responses are the thinning degree of the wall thickness ε (%) and the relative height of the product h*. First, a series of experiments are conducted in conjunction with response surface method (RSM) to render the relationship between inputs and outputs. Subsequently, an analysis of variance (ANOVA) is conducted to verify the response significance and parameter effects. Finally, a numerical optimization algorithm is used to determine the best forming conditions. The results indicate that the thinning degree of 13.121% is achieved at the forming pressure of 0.7 MPa, the deformation temperature of 500°C, and the forming time of 31 minutes.

scholarly journals Changes in Wall-Thickness Distribution by Plug Drawing

1977 ◽  
Vol 18 (4) ◽  
pp. 340-346 ◽  
Author(s):  
Hiroshi Tanaka ◽  
Masaru Sato ◽  
Kazunari Yoshida
Keyword(s):  
Wall Thickness ◽  
Thickness Distribution ◽  
Wall Thickness Distribution

Wall thickness distribution in plug-assist vacuum formed strawberry containers

1997 ◽  
Vol 37 (1) ◽  
pp. 178-182 ◽  
Author(s):  
A. Aroujalian ◽  
M. O. Ngadi ◽  
J-P. Emond
Keyword(s):  
Wall Thickness ◽  
Thickness Distribution ◽  
Wall Thickness Distribution

Investigation on the Formability of Tube in Hydroforming with Radical Crushing under Simple Loading Paths

2011 ◽  
Vol 291-294 ◽  
pp. 595-600 ◽  
Author(s):  
Pan Lei ◽  
Lian Fa Yang ◽  
Yu Xian Zhang
Keyword(s):  
Wall Thickness ◽  
Thickness Distribution ◽  
Tube Hydroforming ◽  
Simple Loading ◽  
Fracture Location ◽  
Wall Thickness Distribution ◽  
Loading Paths ◽  
Filling Ability ◽  
Small Influence ◽  
Peak Value

Tube hydroforming with radial crushing (THFRC) process is particularly applicable to the tube which is difficult to shape due to lack of axial feeding. In this paper, the formability of the circular tube expanded into a triangle cross-section under the simple loading paths is explored by using the numerical simulation. The effect of the forming mode and the loading paths on bulged profile, wall-thickness distribution and the potential fracture location of the bulged tube are analyzed. The results showed that constraint conditions at tube ends have small influence on the bulged profile and wall-thickness distribution. Moreover, the larger the peak value of the internal pressure is, the better material filling ability and higher accurate the tube bulged profile are. Furthermore, the higher forming accuracy, the better material filling ability and wall-thickness distribution are gained in THFRC than those in free hydro-bulging (FHB) process, and they can be obtained under constant than linear pressure loading paths. Finally, the potential fracture location of the bulged tube in THFRC process is quite different from that in FHB process.

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