Numerical Simulation of Hydroforming Process Involving a Tubular Blank with Dissimilar Thickness

2007 ◽  
Vol 22 (2) ◽  
pp. 286-291 ◽  
Author(s):  
R. M. Natal Jorge ◽  
R. A. F. Valente ◽  
A. P. Roque ◽  
M. P. L. Parente ◽  
A. A. Fernandes
Keyword(s):  
Numerical Simulation ◽  
Hydroforming Process ◽  
Tubular Blank ◽  
Dissimilar Thickness

Numerical Simulation Research on Springback Controlling Methods of Aluminum Alloy Panel during Hydroforming

2016 ◽  
Vol 851 ◽  
pp. 163-167
Author(s):  
Dong Yan Lin ◽  
Yi Li
Keyword(s):  
Numerical Simulation ◽  
Aluminum Alloy ◽  
Process Parameters ◽  
Orthogonal Experiment ◽  
Blank Holder Force ◽  
Scoring Method ◽  
Simulation Research ◽  
Blank Holder ◽  
Hydroforming Process

The hydroforming process of the aluminum alloy panel was simulated by the software DYNAFORM. The effects of process parameters (blank holder force, depth of panel and height of draw bead) on springback of the aluminum alloy were investigated. The max springback of the panel was analyzed by weighted scoring method. Then the process parameters were synthetically optimized for the max positive and negative springback. The results showed that the height of draw bead affects obviously the comprehensive springback of the panel. The optimization of the process parameters obtained by the orthogonal experiment can effectively reduce the max springback of the panel.

Numerical Simulation of the Hydroforming Process

2000 ◽  
Author(s):  
José Luís Farinatti Aymone ◽  
Fábio Gonçalves Teixeira ◽  
Eduardo Bittencourt ◽  
Guillermo Juan Creus
Keyword(s):  
Numerical Simulation ◽  
Hydroforming Process

Numerical Simulation of Rubber Bladder Hydroforming Process for Shrink Flanging Parts with Large Curvature

2012 ◽  
Vol 430-432 ◽  
pp. 1286-1289
Author(s):  
Ming He Chen ◽  
Fu Dong Wang ◽  
Jie Xiong
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Simulation Analysis ◽  
Hydraulic Press ◽  
Blank Holder ◽  
Finite Element Software ◽  
Hydroforming Process ◽  
Rubber Forming ◽  
Main Defect ◽  
Dip Angle

The main defect of shrink flanging wing rib is wrinkling in rubber bladder hydroforming. In the aeronautical field, the side blank holder is usually used to avoid wrinkling. In order to obtain appropriate parameters of side blank holder, it be carried out that the simulation analysis for the process of the high hydraulic press rubber forming processes of high shrink flanging with side blank holder by the ABAQUS finite element software. Besides, the corresponding experiments verified also be implemented. The research results show that the sheet metal tends to wrinkle along with decrease of the blank lap width and increase of these parameters such as the distance between side blank holder and die, the dip angle and fillet radius of the side blank holder.

Analytical and Numerical Approaches to Predict the Flow Characteristics of a Magnetorheological Fluid in Rotational Symmetric Cross Sections

2012 ◽  
Vol 504-506 ◽  
pp. 399-404
Author(s):  
Sebastian Rösel ◽  
Marion Merklein ◽  
Martin Grüner
Keyword(s):  
Numerical Simulation ◽  
Magnetic Flux ◽  
Flux Density ◽  
Cross Sections ◽  
Flow Characteristics ◽  
Magnetic Flux Density ◽  
Flux Lines ◽  
Hydroforming Process ◽  
Fluid Behaviour ◽  
Numerical Approaches

For a better understanding of the hydroforming process using magnetorheological fluids as a medium it is necessary to gain basic information for an analytical and numerical description of the fluid behaviour under process relevant conditions. Therefore an experimental setup is build up, which consists of a pressure chamber and a rotational symmetric outlet. Different parameters like feed rate and magnetic flux density are varied. Afterwards an analytical approach and a numerical model are developed. To get the relevant material input data for the fluid description an additional numerical simulation of the created magnetic flux density with flux lines perpendicular to the symmetry line of the outlet is performed. The leakage rates, which are observed for the experiments, are compared to the analytically calculated ones and to the results of the numerical simulation.

Study on Product Design and Process Simulation of Hydroformed Automobile Framework

2010 ◽  
Vol 102-104 ◽  
pp. 210-213
Author(s):  
Lin Zhou ◽  
Xiao Min Cheng
Keyword(s):  
Numerical Simulation ◽  
Process Simulation ◽  
Tube Hydroforming ◽  
Shell Element ◽  
Loading Path ◽  
Pressure Loading ◽  
Vehicle Performance ◽  
Simulation Based ◽  
Hydroforming Process ◽  
Element Theory

To achieve smaller weight, stronger strength and higher stiffness, tube hydroforming is widely used in the industry. The front beam is analysed the front beam part is redesigned based on the technics, and automotive structural lightweight and integration are achieved under the precondition of ensuring vehicle performance and security. Then, the hydroforming process of front beam is analyzed by numerical simulation based upon the elastic-plastic finite element method, Belytschko-Tsay shell element theory and dynamic explicit solution, the internal pressure loading path as the main hydroforming process parameters is discussed in detail. The present analysis provide basis for its applications.

Experimental Research and Numerical Simulation Analysis for Hydroforming of an Instrument Panel Beam

2013 ◽  
Vol 395-396 ◽  
pp. 966-969
Author(s):  
Xue Yi Wang ◽  
Zai Xiang Zheng ◽  
Wen Shan Wang ◽  
Wei Wei Zhang
Keyword(s):  
Numerical Simulation ◽  
Internal Pressure ◽  
Simulation Analysis ◽  
Tube Hydroforming ◽  
Instrument Panel ◽  
Pressure Load ◽  
Axial Feeding ◽  
Hydroforming Process ◽  
Critical Process Parameters ◽  
Critical Process

Due to the apparent advantages of tube hydroforming technology in reducing weight and energy consumption, and saving material and cost, it has been applied in the production of instrument panel beam. By constructing the FEM models of instrument panel beam, three numerical simulation schemes are designed according to the matching relationship between internal pressure load and axial feeding. Then the simulation results are given and compared with the experimental data. The simulation and experimental analysis indicate that the optimal matching relationship between internal pressure load and axial feeding influences hydroforming result of parts. It provides a theoretical reference for the design of hydroforming process and its die, and the setting of critical process parameters.

Influence Law of Initial Reverse Bulging on Sheet Hydroforming Process

2017 ◽  
Vol 746 ◽  
pp. 99-107 ◽  
Author(s):  
Li Hui Lang ◽  
Quan Da Zhang
Keyword(s):  
Numerical Simulation ◽  
Wall Thickness ◽  
Reasonable Agreement ◽  
Experimental Results ◽  
Forming Limit ◽  
Technological Parameters ◽  
Sheet Hydroforming ◽  
Hydroforming Process

In order to investigating the effect of the combination of two technological parameters such as the initial bulging height and the initial bulging pressure on the sheet , the sheet hydroforming process was studied. Firstly, by using the method of numerical simulation, the sheet hydroforming process with and without the initial bulging were discussed; Secondly, the effect of both the initial bulging height and the initial bulging pressure which were based on the hydroforming with the initial bulging on the forming of the part was studied; Thirdly, the result of the simulation was verified in the experiment. It was found that when the initial bulging height is 3.75mm and the initial bulging pressure is 2MPa, the maximum thinning ratio of the sheet is 4.803% at the end of the sheet hydroforming process. According to the hydroforming process without the initial bulging factors, the maximum thinning ratio is 5.123%. It can be found that the initial bulging factors play a key role in the sheet hydroforming process. The maximum thinning ratio of the wall thickness can be decreased effectively by the appropriate initial bulging height and bulging pressure, and the forming limit can also be improved at the same time. The results of numerical simulation have a reasonable agreement with the experimental results.

Hydroforming Simulation and Experiment on Al 5083 T-Shapes

2010 ◽  
Vol 97-101 ◽  
pp. 2668-2671
Author(s):  
Xun Zhong Guo ◽  
Jie Tao ◽  
Zheng Yuan
Keyword(s):  
Numerical Simulation ◽  
Process Parameters ◽  
Optimization Of Process Parameters ◽  
Hydroforming Process ◽  
Simulation And Experiment ◽  
Simulation Results ◽  
Thinning Rate ◽  
Practical Forming

The hydroforming process to manufacture Al 5083 T-shapes with desired protrusion height and uniform thinning rate was evaluated by means of numerical simulation in this work. The optimization of process parameters and the prediction of forming effect were then carried out. Subsequently, the practical forming was performed based on the simulation results. It was obvious that the simulation results agreed well with the experimental ones. In addition, the streamline on the surface which formed in the hydroforming process was observed in the experiment.

Sign in / Sign up

Export Citation Format

Share Document