Application of numerical simulation in the bending of aluminium-alloy profiles

1996 ◽  
Vol 58 (2-3) ◽  
pp. 274-285 ◽  
Author(s):  
Frode Paulsen ◽  
Torgeir Welo
Keyword(s):  
Numerical Simulation ◽  
Aluminium Alloy

Pneumatic pulsator design as an example of numerical simulations in engineering applications

2012 ◽  
Vol 2 (1) ◽  
Author(s):  
Krzysztof Wołosz ◽  
Jacek Wernik
Keyword(s):  
Fluid Dynamics ◽  
Numerical Simulation ◽  
Cast Iron ◽  
Numerical Simulations ◽  
Stress Analysis ◽  
Aluminium Alloy ◽  
Loose Material ◽  
Engineering Applications ◽  
Pressure Losses ◽  
Pneumatic Impact

AbstractThe paper presents the part of the investigation that has been carried out in order to develop the pneumatic pulsator which is to be employed as an unblocking device at lose material silo outlets. The part of numerical simulation is reported. The fluid dynamics issues have been outlined which are present during supersonic airflow thought the head of the pulsator. These issues describe the pneumatic impact phenomenon onto the loose material bed present in the silo to which walls the pulsator is assembled. The investigation presented in the paper are industrial applicable and the result is the working prototype of the industrial pneumatic pulsator. The numerical simulation has led to change the piston shape which is moving inside the head of the pulsator, and therefore, to reduce the pressure losses during the airflow. A stress analysis of the pulsator controller body has been carried out while the numerical simulation investigation part of the whole project. The analysis has made possible the change of the controller body material from cast iron to aluminium alloy.

Test Analysis of MSD Crack Propagation Structure in 2524-T3 Aluminium Alloy

2014 ◽  
Vol 574 ◽  
pp. 386-390
Author(s):  
Jian Ping Zhang ◽  
Xiao Ling Zheng
Keyword(s):  
Numerical Simulation ◽  
Crack Propagation ◽  
Aluminium Alloy ◽  
Crack Growth ◽  
Growth Parameters ◽  
Interactive Effects ◽  
Aviation Industry ◽  
Test Analysis ◽  
Finite Element Software ◽  
Fast Prediction

The MSD phenomenon is an active research topic of the academic and the aviation industry. This paper puts emphasis on the multi-crack propagation with interactive effects of MSD structure in 2524-T3 aluminium alloy. Material tests were accomplished for the crack growth parameters. The multi-crack propagation tests were conducted on specimens containing 5-similar-details, and the corresponding fatigue crack growth analysis with a fast prediction of crack growth life method were accomplished with finite element software. The comparison of crack tip position vs. load cycling from the test and the numerical simulation shows that the numerical simulation can give a good agreement to the experiment result.

scholarly journals Numerical Simulation and Experimental Investigation of the Preparation of Aluminium Alloy 2A50 Semi-Solid Billet by Electromagnetic Stirring

Materials ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 5470
Author(s):  
Yongfei Wang ◽  
Shengdun Zhao ◽  
Yi Guo
Keyword(s):  
Numerical Simulation ◽  
Aluminium Alloy ◽  
Deep Understanding ◽  
Electromagnetic Stirring ◽  
Experimental Result ◽  
Maximum Speed ◽  
Operating Parameters ◽  
Average Grain Size ◽  
Semi Solid ◽  
High Level

Electromagnetic stirring (EMS) has become one of the most important branches of the electromagnetic processing of materials. However, a deep understanding of the influence of the EMS on the thermo-fluid flow of the aluminium alloy melt, and consequently the refinement of the microstructure is still not available. This paper investigated the influence of the operating parameters of EMS on the magnetohydrodynamics, temperature field, flow field, and the vortex-shaped structure of the melt as well as the microstructure of the aluminium alloy 2A50 billet by numerical simulation and experiments. The operating parameters were categorised into three groups representing high, medium, and low levels of Lorentz forces generated by EMS. The numerical simulation matched well with the experimental result. It was found that a high level of EMS can improve the uniformity of the temperature and flow fields. The maximum speed was observed at the radius of around 25 mm under all EMS levels. Both the depth and diameter of the vortex-shaped structure generated increased with the enhancement in the EMS level. The average grain size of the edge sample of the billet was reduced by 48.3% while the average shape factor was increased by 51.0% under the medium-level EMS.

scholarly journals Numerical Simulation of Reoxidation Processes

2020 ◽  
Vol 328 ◽  
pp. 02007
Author(s):  
Marek Bruna ◽  
Marek Galčík
Keyword(s):  
Numerical Simulation ◽  
Liquid Metal ◽  
Aluminium Alloy ◽  
Oxide Layer ◽  
Negative Impact ◽  
Casting Process ◽  
Simulation Software ◽  
Gating System ◽  
Alloy Casting ◽  
Positive Effect

Reoxidation is one of the main problem accompanying the aluminium alloy casting process. The oxide layer created on the melt surface during reoxidation is entrained into the bulk of liquid metal and “bifilms” are created. Bifilms have negative impact on cast quality and internal homogenity of final casting. Paper aim is to clarify the reoxidation phenomenon by visualization with the aid of ProCAST numerical simulation software. Experiemtnal work deals with the design of several types of gating systems (non pressurized and naturally pressurized) with vortex elements in order to determine how these elements affect the reoxidation processes. Achieved results clearly confirmed the positive effect of the naturally pressurized gating system with vortex elements. The evaluation focuses mainly on melt velocity and amount of oxides created in gating system and in mold cavity.

scholarly journals Numerical simulation for creep age forming of aluminium alloy 7050 saddle-shaped part

2017 ◽  
Vol 207 ◽  
pp. 299-304 ◽  
Author(s):  
Fenggong Lyu ◽  
Xia Huang ◽  
Yuansong Zeng ◽  
Zhusheng Shi ◽  
Mingtao Wang
Keyword(s):  
Numerical Simulation ◽  
Aluminium Alloy ◽  
Shaped Part ◽  
Aluminium Alloy 7050 ◽  
Creep Age Forming
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