Numerical Simulation of Eccentric Extrusion Form Bending Pipe Parts

2011 ◽  
Vol 704-705 ◽  
pp. 1492-1497
Author(s):  
Ji Shun Song ◽  
Yun Tao Li ◽  
De Heng Du ◽  
Xu Ma ◽  
Kang Yin
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Aluminum Alloy ◽  
Field Distribution ◽  
Three Dimensional ◽  
Die Design ◽  
Forming Process ◽  
Alloy Tube ◽  
Extrusion Forming ◽  
Aluminum Alloy Tube

Eccentric extrusion method is used in this paper，through this method achieved bending aluminum-alloy tube extrusion forming process. Used finite element method，achieved three-dimensional numerical simulation of bending aluminum-alloy tube in eccentric extrusion by DEFORM-3D finite element commercial software，analyzed velocity field distribution，material flow，squeezing pressure，stress and strain field distribution of the process；Introduce the mechanism of one step direct extrusion forming tube bending process，it will be of great guiding significance the actual die design.

A study on numerical simulation of hydroforming of aluminum alloy tube

2004 ◽  
Vol 146 (3) ◽  
pp. 377-388 ◽  
Author(s):  
Lihui Lang ◽  
Shijian Yuan ◽  
Xiaosong Wang ◽  
Z.R. Wang ◽  
Zhuang Fu ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Aluminum Alloy ◽  
Alloy Tube ◽  
Aluminum Alloy Tube

Deformation Behavior of Aluminum Alloy Tube in Semi-Dieless Metal Bellows Forming Process with Local Heating Technique

2014 ◽  
Vol 936 ◽  
pp. 1742-1746 ◽  
Author(s):  
Zi Cheng Zhang ◽  
Kenichi Manabe ◽  
Tsuyoshi Furushima ◽  
Kazuo Tada ◽  
Osamu Sasaki
Keyword(s):  
Aluminum Alloy ◽  
Compression Ratio ◽  
Deformation Behavior ◽  
Heating Temperature ◽  
Local Heating ◽  
Manufacturing Cost ◽  
Forming Process ◽  
Alloy Tube ◽  
Metal Bellows ◽  
Aluminum Alloy Tube

The metal bellows are used in a large number of industrial applications for their flexile and elastic properties. For the traditional manufacturing methods for metal bellows, the dies and (or) tools are required. It is inconvenient to change the shape of metal bellows and also leads to the high cost. To reduce the manufacturing cost and produce the metal bellows with various shapes, the semi-dieless metal bellows forming process was proposed. The deformation behavior of aluminum alloy tube in semi-dieless bellows forming process was investigated in the study. The effects of compression ratio, heating length on the convolution height, pitch of bellows during the semi-dieless bellows forming process were studied. The results showed that the deformation conditions of semi-dieless forming process have significant influences on the shape of aluminum alloy bellows and deformation behavior of aluminum alloy tube in the forming process. The increase of compression ratio, heating temperature and heating length resulted in the increase of pitch and decrease convolution height of aluminum alloy metal bellows.

Numerical Simulation and Test Research of Continuous Flexible Forming Process for the Spherical Parts

2011 ◽  
Vol 291-294 ◽  
pp. 269-272
Author(s):  
Ying Wu Lan ◽  
Zhong Yi Cai ◽  
Ming Zhe Li
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Three Dimensional ◽  
Element Model ◽  
Longitudinal Deformation ◽  
Forming Process ◽  
Flexible Forming ◽  
Sensing System ◽  
Flexible Forming Process ◽  
The Finite Element Model

The deformation of sheet metal in the continuous flexible forming (CFF) process is complex and the formed result is affected by many factors. In this paper, the finite element model of CFF was founded and the forming processes of spherical parts were simulated with the software ABAQUS. The interaction between transversal deformation and longitudinal deformation in the CFF process is analyzed. Based on results of numerical simulation and forming tests, the process parameters of CFF is revised, and formed surface is measured by three dimensional sensing system, the measured results indicate the precision of formed parts are satisfactory.

scholarly journals Effect of Variable Tube Wall Thicknesses of Al-Mg-Si Alloy Tube During Electromagnetic Compression using Four Turn Axi-Symmetric Coil

2020 ◽  
Vol 9 (1) ◽  
pp. 1427-1431
Keyword(s):  
Aluminum Alloy ◽  
Nuclear Power ◽  
Power Plants ◽  
Tube Wall ◽  
Three Dimensional ◽  
Outer Diameter ◽  
Software Comparison ◽  
Alloy Tube ◽  
Aluminum Alloy Tube ◽  
Electromagnetic Compression

Electromagnetic compression (EMC) is a solid state, high velocity process of deformation of materials. In this process the enhancement of the formability is achieved due to high strain rate forming. In the present study Aluminum alloy AA6061 tube has been compressed using four turn axisymmetric coil. The effect of variable tube wall thicknesses i.e. 1.0, 1.7, and 2.4 mm during the compression of the Al-Mg-Si Aluminum alloy tube electromagnetically has been studied. A constant gap between coil inner diameter (ID) and workpiece outer diameter (OD) was maintained. It has been found that the tube deformation was maximum when the wall thickness was minimum. For compression, 8 kJ energy was used with double power bank. A three dimensional (3D) model of four turn compression coil has been proposed using LS-DYNA software. Comparison between the numerical simulation and experimental results showed a close agreement between both the results. Compression using EMF process can be used in modern industries like automotive, aerospace and nuclear power plants.

Deform Based 1Cr18Ni9Ti Pipe Joint Upsetting Extrusion Process Finite Element Numerical Simulation Analysis

2013 ◽  
Vol 365-366 ◽  
pp. 1128-1131
Author(s):  
Zhi Yi Huo ◽  
Ying Zhi Li ◽  
Xiu Qian Sun ◽  
Qian Wang
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Simulation Analysis ◽  
Extrusion Process ◽  
Forming Process ◽  
Element Analysis ◽  
Part Quality ◽  
Quantitative Basis ◽  
Extrusion Forming ◽  
Pipe Joint

Internal Defects are more likely to occur when 1Cr18Ni9Ti pipe joint are produced by traditional casting method or welding forming method, while the upsetting extrusion proposed in this essay can not only meet the part quality requirements, but also save material and shorten processing cycle. By numerical simulation analysis about part upsetting extrusion forming process with the finite element analysis method, we can obtain many index numerical values in part forming process, and therefore provide reliable quantitative basis for optimum design.

Numerical simulation of an aluminum alloy tube hydroforming

2006 ◽  
Vol 179 (1-3) ◽  
pp. 67-73 ◽  
Author(s):  
Jorge Paiva Abrantes ◽  
Carlos Eduardo Célia de Lima ◽  
Gilmar Ferreira Batalha
Keyword(s):  
Numerical Simulation ◽  
Aluminum Alloy ◽  
Tube Hydroforming ◽  
Alloy Tube ◽  
Aluminum Alloy Tube

Numerical Simulation on Conform Process of Aluminum Alloy Rectangular Hollow Conductor

2007 ◽  
Vol 546-549 ◽  
pp. 735-740
Author(s):  
Peng Yue Wu ◽  
Yu Cai Wu ◽  
Shui Sheng Xie ◽  
Guo Jie Huang ◽  
Lei Cheng
Keyword(s):  
Aluminum Alloy ◽  
Three Dimensional ◽  
Processing Parameters ◽  
Forming Process ◽  
Die Structure ◽  
Die Materials ◽  
Dimensional Finite Element ◽  
Conform Process ◽  
Three Dimensional Finite Element ◽  
Extrusion Forming

In the investigation, the continuous extrusion forming (CONFORM) process of aluminum alloy rectangular hollow conductor has been studied by three-dimensional finite-element method based on Software DEFORM-3D. The rigid-viscoplastic constitutive equation was employed in the model. Distributions of velocity field, strain field, stress field and temperature field were obtained in the forming process. The results will give effective guidelines to optimize the processing parameters and to select, the die structure and die materials.

scholarly journals Flexible Die Design and Springback Compensation Based on Modified Displacement Adjustment Method

2014 ◽  
Vol 6 ◽  
pp. 131253 ◽  
Author(s):  
Young-Ho Seo ◽  
Ji-Woo Park ◽  
Woo-Jin Song ◽  
Beom-Soo Kang ◽  
Jeong Kim
Keyword(s):  
Closed Loop ◽  
Three Dimensional ◽  
Loop System ◽  
Die Design ◽  
Manufacturing Cost ◽  
Closed Loop System ◽  
Forming Process ◽  
Element Analysis ◽  
Springback Compensation ◽  
Flexible Die

Springback in metal forming process often results in undesirable shape changes in formed parts and leads to deterioration in product quality. Even though springback can be predicted and compensated for through the theories or methodologies established thus far, an increase in manufacturing cost accompanied by a change in die shape is inevitable. In the present paper, it is suggested that the cost accompanied with springback compensation can be minimized while allowing the processing of various three-dimensional curved surfaces by using a flexible die composed of multiple punches. With the die being very flexible, the iterative trial-and-error method can be readily applied to compensate for the springback. Thus, repeated designing and redesigning of solid or matched dies can be avoided, effectively saving considerable time. Only some adjustments of punch height are required. Detailed designs of the flexible die as well as two core algorithms to control the respective punch heights are described in this paper. In addition, a closed-loop system for the springback compensation using the flexible die is proposed. The amount of springback was simulated by a finite element analysis and the modified displacement adjustment (DA) method as the springback compensation model was used in the closed-loop system. This system was applied to a two-dimensional quadratic shape problem, and its robustness was verified by an experiment.

Concurrent Engineering Design of Sheet Stamping by Using an Inverse FE Approach

1997 ◽  
Author(s):  
Shiyong Yang ◽  
Kikuo Nezu
Keyword(s):  
Finite Element ◽  
Concurrent Engineering ◽  
Process Simulation ◽  
Three Dimensional ◽  
Sheet Forming ◽  
Design Stage ◽  
Forming Process ◽  
Element Analysis ◽  
Preliminary Design Stage ◽  
Product And Process

Abstract An inverse finite element (FE) algorithm is proposed for sheet forming process simulation. With the inverse finite element analysis (FEA) program developed, a new method for concurrent engineering (CE) design for sheet metal forming product and process is proposed. After the product geometry is defined by using parametric patches, the input models for process simulation can be created without the necessity to define the initial blank and the geometry of tools, thus simplifying the design process and facilitating the designer to look into the formability and quality of the product being designed at preliminary design stage. With resort to a commercially available software, P3/PATRAN, arbitrarily three-dimensional product can be designed for manufacturability for sheet forming process by following the procedures given.

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