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.

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.

Study on the Forming Process of the Crossmember in Car Intermediate Floor

2013 ◽  
Vol 442 ◽  
pp. 593-598
Author(s):  
Xue Xia Wang ◽  
Peng Chong Guan ◽  
Hai Peng Li ◽  
Li Hui Wang ◽  
Na Zhang ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Numerical Model ◽  
Process Parameters ◽  
Thickness Distribution ◽  
Forming Limit Diagram ◽  
Forming Limit ◽  
Simulation Technology ◽  
Forming Process ◽  
Distribution Diagram ◽  
Simulation Results

Flanging and bending forming processes of the crossmember in car intermediate floor are investigated respectively by using numerical simulation technology. The numerical model of the crossmember was established and its press forming effect was simulated to determine the feasible process parameters affecting its manufacturability. Forming limit diagram and thickness distribution diagram are used to evaluate simulation results of different process schemes. And then optimum values of process parameters for flanging and bending are found, which can reduce the tendencies of wrinkling, springback and crackling during the stamping of the product.

The CAE Simulation of the Printer Cover Panel with Gas-Assisted Injection Molding

2012 ◽  
Vol 201-202 ◽  
pp. 808-811
Author(s):  
Guo Qiang Zhang ◽  
Mei Ting Xie ◽  
Wen Juan Wang ◽  
Ji Qiang Zhai
Keyword(s):  
Numerical Simulation ◽  
Injection Molding ◽  
Production Process ◽  
Process Parameters ◽  
Filling Process ◽  
Molding Process ◽  
Computer Aided ◽  
Simulation Results ◽  
Cae Technology ◽  
Cae Simulation

Numerical simulation in the printer cover product molding process with gas assisted injection molding was carried out by means of computer aided engineering. The filling process and surface quality were forecasted. The simulation results provide an important reference for the selection in the production process parameters. Compared with the production molding process and the actual product, CAE technology used in actual production and design is entirely feasible.

scholarly journals Numerical Simulation and Experimental Study on Shaped Charge Warhead of Guided Ammunition

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Guangsong Ma ◽  
Guanglin He
Keyword(s):  
Numerical Simulation ◽  
Cone Angle ◽  
Shaped Charge ◽  
Liner Material ◽  
Penetration Ability ◽  
Simulation And Experiment ◽  
Control Section ◽  
Simulation Results ◽  
And Control ◽  
Shaped Charge Jet

To study the jet penetration capability of shaped charge warhead of guided ammunition, a variable cone angle-shaped charge liner was designed. LS-DYNA software is used to simulate the penetration capability of shaped charge warhead with three different metal materials (copper, steel, and aluminum). Numerical simulation results show that the velocity of the shaped charge jet formed by the three kinds of materials is v aluminum > v copper > v steel , and the residual velocity after penetration is V steel > V aluminum > V copper , the time when the jet starts to break is tcopper > tsteel > taluminum, and the penetration completion time is Tcopper < Taluminum < Tsteel; therefore, according to the numerical simulation results, copper was selected as the liner material, and the principle prototype is made for the experiment. The results of numerical simulation and experiment show that the shaped charge warhead with copper shaped charge liner has good penetration ability and after-effect damage ability to steel target after penetrating the guidance section, steering gear section, and control section.

scholarly journals Comparison of Numerical Simulation and Experiment for the Microstructure Development of a Cold-Rolled Multiphase Steel during Annealing

2016 ◽  
Vol 854 ◽  
pp. 167-173 ◽  
Author(s):  
Norbert Kwiaton ◽  
Roman Kuziak ◽  
Maciej Pietrzyk
Keyword(s):  
Mechanical Properties ◽  
Numerical Simulation ◽  
Process Parameters ◽  
Temperature Cycle ◽  
Microstructure Development ◽  
Tempered Martensite ◽  
Temperature Cycles ◽  
Simulation And Experiment ◽  
Cold Rolled ◽  
Multiphase Steel

JAMK model, developed as part of RFSR-project “VADPsheets”, was applied to analyse different time temperature cycles from industrial time temperature cycle. The results of numerical simulation are compared with experimentally determined mechanical properties and microstructures. By distinguishing of recrystallized ferrite, ferrite after transformation, tempered martensite, bainite and martensite can be explained the experimentally obtained mechanical properties. The results of simulation can be used to optimizing the properties and to generate a better understanding of process parameters.

Study on the Porous Media Used in Numerical Simulation of Temperature Characteristic for Isothermal Chambers

2011 ◽  
Vol 291-294 ◽  
pp. 1689-1692
Author(s):  
Li Hong Yang ◽  
Da Hua Liu
Keyword(s):  
Numerical Simulation ◽  
Porous Medium ◽  
Porous Media ◽  
Flow Rate ◽  
Temperature Characteristic ◽  
Test Results ◽  
Temperature Characteristics ◽  
Simulation And Experiment ◽  
Simulation Results ◽  
Metal Wires

Isothermal chamber, which is fabricated by empty chamber stuffed with thin metal wires, is a kind of test devices for flow rate characteristics of pneumatic components, and its temperature characteristics are critical to the accuracy of test results. In this paper, the stuffers in isothermal chamber were considered as porous medium with large porosity, so the temperature characteristics could be studied by numerical simulation. Though there are differences between simulation and experiment, they have same trends and the law of variation can be seen from the simulation results, which demonstrates the reliability of numerical simulation. Consequently, simulation can be an efficient method, which is energy-saving and cost-reducing.

Simulation and Experimental Study on the Impact of Breadth of Back Blade on Axial Force Balance

2011 ◽  
Vol 130-134 ◽  
pp. 1568-1572
Author(s):  
Hui Wang ◽  
Jie Gang Mu ◽  
Miao Yin Su ◽  
Shui Hua Zheng ◽  
Jin Jing Zhao ◽  
...  
Keyword(s):  
Experimental Data ◽  
Numerical Simulation ◽  
Experimental Study ◽  
Axial Force ◽  
Three Dimensional ◽  
Force Balance ◽  
Simulation And Experiment ◽  
Simulation Results ◽  
The Impact ◽  
The Relationship

The paper studies the relationship between axial force and breadth of back blade by numerical simulation and experiment. On the basis of the RNG k-ε turbulence model and technology of compact local grids and regional computing, three dimensional numerical simulations to 100HZ165-250 centrifugal pump with various breadths were carried out. Through comparing and analyzing of the flow field, it can be seen that the axial force reduces with the increase of the back blade breadth. After that, the simulation results were verified by the experimental data got from different test devices, and it shows that the conclusions are reliable.

scholarly journals Optimization of Process Parameters of Stamping Forming of the Automotive Lower Floor Board

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Guoying Ma ◽  
Binbing Huang
Keyword(s):  
Process Parameters ◽  
Production Efficiency ◽  
Simulation Analysis ◽  
Orthogonal Experiment ◽  
Production Costs ◽  
Main Process ◽  
Forming Process ◽  
Optimization Of Process Parameters ◽  
Automobile Panel ◽  
Thinning Rate

There are many process parameters which have great effect on the forming quality of parts during automobile panel stamping forming process. This paper took automotive lower floor board as the research object; the forming process was analyzed by finite element simulation using Dynaform. The influences of four main process parameters including BHF (blank holder force), die corner radius, friction coefficient, and die clearance on the maximum thinning rate and the maximum thickening rate were researched based on orthogonal experiment. The results show that the influences of each value of various factors on the target are not identical. On this basis, the optimization of the four parameters was carried out, and the high quality product was obtained and the maximum thinning rate and maximum thickening rate were effectively controlled. The results also show that the simulation analysis provides the basis for the optimization of the forming process parameters, and it can greatly shorten the die manufacturing cycles, reduce the production costs, and improve the production efficiency.

The Forming Scheme of a Silencer Cover in Progressive Die

2010 ◽  
Vol 97-101 ◽  
pp. 311-314
Author(s):  
Ming Jun Liu ◽  
Bai Liu ◽  
Fei Tang
Keyword(s):  
Numerical Simulation ◽  
Process Parameters ◽  
Drawing Process ◽  
Progressive Die ◽  
Binding Force ◽  
Simulation And Experiment ◽  
Dynamic Software ◽  
Explicit Dynamic ◽  
Blank Size

The drawing scheme of a silencer cover in the progressive die was studied. This cover was formerly processed by several single punching dies and now was produced by a progressive die. The drawing scheme was hard to determine. Therefore, the explicit dynamic software DYNAFORM was applied to make simulations about the drawing process. According to comparisons between the simulation and experiment results, the optimized drawing scheme, blank layout, blank size, binding force and some other process parameters were determined. The defects were eliminated after the proper drawbead was set. Experiments showed that numerical simulation provided an efficient way for the optimization of the forming scheme in the progressive die production.

APPLICATION OF SOLID ELEMENT IN IRONING SIMULATION AND OPTIMIZATION OF PROCESS PARAMETERS

2009 ◽  
Vol 06 (04) ◽  
pp. 485-500 ◽  
Author(s):  
JIANGPING XU ◽  
TING DU ◽  
YUQI LIU ◽  
ZHIBING ZHANG
Keyword(s):  
Process Parameters ◽  
Control Method ◽  
Maximum Load ◽  
Load Force ◽  
Viscous Damping ◽  
Forming Force ◽  
Simulation And Optimization ◽  
Optimization Of Process Parameters ◽  
Hourglass Control ◽  
Simulation Results

Based on viscous damping hourglass control method, a one-point integrated hexahedral finite element dynamic explicit algorithm is programmed and ironing process simulation has also been carried out. Simulation results with controlled hourglass algorithm shows that the hourglass control method is robust in this research and the setting of hourglass coefficient is analyzed. Furthermore, the reduction ratio R, friction coefficient μ between molds and blank, semi-angle α, which affect the maximum forming force, are discussed in detail. Simulation results show that the proper choice of those process parameters could obtain minimum maximum load force, thus effectively decrease moulds wear and lengthen moulds life.

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