FE simulation of a steel thin-wall short-tube forming process

2011 ◽  
Author(s):  
J. Raujol-Veillé ◽  
F. Toussaint ◽  
L. Tabourot ◽  
M. Vautrot ◽  
P. Balland
Keyword(s):  
Fe Simulation ◽  
Thin Wall ◽  
Forming Process ◽  
Tube Forming ◽  
Short Tube

scholarly journals Cold Forging Effect on the Microstructure of Motorbike Shock Absorbers Fabricated by Tube Forming in a Closed Die

2021 ◽  
Vol 11 (5) ◽  
pp. 2142
Author(s):  
Trung-Kien Le ◽  
Tuan-Anh Bui
Keyword(s):  
Material Flow ◽  
Cold Forging ◽  
Technological Parameters ◽  
Forming Process ◽  
Tube Forming ◽  
Shock Absorbers ◽  
Thin Walled Tube ◽  
Thin Walled ◽  
Quality Of Products ◽  
Forming Defects

Motorbike shock absorbers made with a closed die employ a tube-forming process that is more sensitive than that of a solid billet, because the tube is usually too thin-walled to conserve material. During tube forming, defects such as folding and cracking occur due to unstable tube forming and abnormal material flow. It is therefore essential to understand the relationship between the appearance of defects and the number of forming steps to optimize technological parameters. Based on both finite element method (FEM) simulations and microstructural observations, we demonstrate the important role of the number and methodology of the forming steps on the material flow, defects, and metal fiber anisotropy of motorbike shock absorbers formed from a thin-walled tube. We find limits of the thickness and height ratios of the tube that must be held in order to avoid defects. Our study provides an important guide to workpiece and processing design that can improve the forming quality of products using tube forming.

scholarly journals Deformation Characteristics and Microstructure Analysis of Aluminum Alloy Component with Complex Shape by Cold Orbital Forming

Metals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 808
Author(s):  
Wei Feng ◽  
Chaoyi Jin ◽  
Jiadong Deng ◽  
Wuhao Zhuang
Keyword(s):  
Aluminum Alloy ◽  
Complex Shape ◽  
Fe Simulation ◽  
Effective Strain ◽  
Electron Back Scatter Diffraction ◽  
Main Body ◽  
Deformation Characteristics ◽  
Alloy Component ◽  
Forming Process ◽  
Orbital Forming

This work aimed to study the deformation characteristics and microstructure of AA6063 aluminum alloy component with complex shape manufactured by cold orbital forming processing. The material flowing behavior was analyzed by Finite Element (FE) simulation and forming experiments were carried out using bar blank with different lengths. The microstructure of the boss zone cut from the formed samples was observed using scanning electron microscopy (SEM) and electron back-scatter diffraction (EBSD). FE simulation and experiment results both showed the aluminum base can be formed using cold orbital forming process. The distributions of the effective strain of the component with different blank lengths were almost the same, and the effective strain was bigger at the boss and the flash as the forming finished. The material flow is complex, especially in the boss, and the folding defect was observed at the root of the boss. The distribution of Mg2Si strengthening precipitate is more homogeneous in the matrix, has a different shape, and shows directivity at different position of boss zone. The grains are elongated, and the extent is different at different positions of the boss zone after cold orbital forming, and the crystal orientation discrepancy is smaller in the component main body and bigger in the boss zone. Subsequent forming process and blank optimization need to be further researched to improve forming quality.

Finite Element Simulation and Experimental Study on Blow Forming of Plastic Cups

2011 ◽  
Vol 148-149 ◽  
pp. 1319-1322
Author(s):  
Xiao Hu ◽  
Yi Sheng Zhang ◽  
Hong Qing Li ◽  
De Qun Li
Keyword(s):  
Finite Element ◽  
Thickness Distribution ◽  
Viscoelastic Model ◽  
Engineering Practice ◽  
Fe Model ◽  
Thin Wall ◽  
Forming Process ◽  
Element Simulation ◽  
Physically Based ◽  
Set Up

Blow forming process of plastic sheets is simple and easy to realize, thus, it is widely used for plastic thin-wall parts. In the practical production, an effective method is needed for the preliminary set-up of process parameters in order to achieve accurate control of thickness distribution. Thus, a finite element method (FEM) code is used to simulate blow forming process. For better description of complex material theological characteristics, a physically based viscoelastic model (VUMAT forms Buckley model) to model the complex constitutive behavior is used. Nonlinear FE analyses using ABAQUS were carried out to simulate the blow forming process of plastic cups. The actual values at different locations show a satisfactory agreement with the simulation results: as a matter of fact the error along the cell mid-section did not exceed 0.02 mm on average, corresponding to 5% of the initial thickness, thus the FE model this paper can meet the requirements of the engineering practice.

scholarly journals Viability of thin wall tube forming of ATF FeCrAl

2016 ◽  
Author(s):  
Stuart Andrew Maloy ◽  
Eda Aydogan ◽  
Osman Anderoglu ◽  
Curt Lavender ◽  
Yukinori Yamamoto
Keyword(s):  
Thin Wall ◽  
Tube Forming

A novel path strategy design for precise 2D and 3D laser tube forming process; experimental and numerical investigation

Optik ◽  
2020 ◽  
Vol 206 ◽  
pp. 164302 ◽  
Author(s):  
S. Esmaeil Khandandel ◽  
S.M. Hossein Seyedkashi ◽  
Mahmoud Moradi
Keyword(s):  
Numerical Investigation ◽  
Forming Process ◽  
Tube Forming ◽  
Laser Tube ◽  
Strategy Design ◽  
2D And 3D

Development of a Tele-Operative Control for the Incremental Tube Forming Process and Its Integration into a Learning Environment

2016 ◽  
pp. 513-528
Author(s):  
Rickmer Meya ◽  
Tobias R. Ortelt ◽  
Alessandro Selvaggio ◽  
Sami Chatti ◽  
Christoph Becker ◽  
...  
Keyword(s):  
Learning Environment ◽  
Forming Process ◽  
Tube Forming ◽  
Operative Control

Modeling and FE Simulation of Quenchable High Strength Steels Sheet Metal Hot Forming Process

2010 ◽  
Vol 20 (6) ◽  
pp. 894-902 ◽  
Author(s):  
Hongsheng Liu ◽  
Jun Bao ◽  
Zhongwen Xing ◽  
Dejin Zhang ◽  
Baoyu Song ◽  
...  
Keyword(s):  
Sheet Metal ◽  
Fe Simulation ◽  
High Strength Steels ◽  
High Strength ◽  
Hot Forming ◽  
Forming Process

Designing superplastic forming process of a developmental AA5456 using pneumatic bulge test experiments and FE-simulation

2012 ◽  
Vol 6 (3) ◽  
pp. 219-228 ◽  
Author(s):  
Jens Kappes ◽  
Mathias Liewald ◽  
Simon Jupp ◽  
Christoph Pirchl ◽  
Roman Herstelle
Keyword(s):  
Fe Simulation ◽  
Superplastic Forming ◽  
Bulge Test ◽  
Forming Process ◽  
Pneumatic Bulge Test
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