The coupled thermo-mechanical analysis in the upsetting process by the dynamic FEM

Wang, A-Cheng; Chen, Yi-Sian; Wang, Chen

doi:10.1016/j.jmatprotec.2007.11.174

Cited by 10 publications

(3 citation statements)

References 5 publications

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“…Analyzing the process and dies by FEM can result in saving time and money by reducing the number of prototypes required. The finite element method has wide applications and enjoys extensive utilization in the thermal, metal forming, and fluid analysis areas [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Simulation and optimization of hot extrusion process to produce rectangular waveguides

Sharififar

Mousavi

2015

Int J Adv Manuf Technol

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In this study, the Taguchi method and genetic algorithm are employed to optimize the die geometry in order to obtain the minimum magnitude of extrusion force to produce the rectangular waveguides. Waveguides are hollow metal tubes for transporting electromagnetic energy from one region to another. A combination of process parameters was selected using orthogonal array Taguchi method. The results were then simulated by finite element method (FEM). By using the analysis of variance (ANOVA) method, the effective parameters and their interactions were determined. By using the FEM results, an artificial neural network (ANN) model was trained, and the effects of die factors on the extrusion force were studied for constant thermal and frictional conditions. Moreover, the optimum conditions were predicted by means of genetic algorithm (GA) method which was verified by experimental procedure. The optimum die length and billet hole diameter were obtained at L=20 and D=3 cm, respectively, for the initial billet temperature of 450°C and friction coefficient of 0.1.

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Section: Introductionmentioning

confidence: 99%

Simulation and optimization of hot extrusion process to produce rectangular waveguides

Sharififar

Mousavi

2015

Int J Adv Manuf Technol

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“…Nowadays, the trial and error procedure is replaced by numerical simulation in predicting the defects and designing tools. The main topics are focused on the predictions of the formability, fracture situation, and optimal operation conditions [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

A Study on the Warm Forging-Flaring Process of Brass Tube

Liu

Wang

Lee

et al. 2014

AMR

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At present, quite a lot of enterprises, small or medium-sized, are engaged in developing the various necessaries of livelihood. And, the forming processes are generally adopted for the methods of parts manufacture. Though various forming technology progress rather well, but the warm working process often cannot obtain fine finished products in the process of manufacturing. The warm working process still needs more adequate techniques. This study is focused on the analyzing of the warm forging-flaring process of brass tube, and the improving of the die design and the working procedures. In this paper, two sets of forging and flaring die are designed for experimental works. The results of simulation are compared with the experiments, the formability of brass tube showed a good agreement. Therefore, we suggest a multi-pass of forging process instead of single-pass process. The stress distributions and loading history in forming processes are also assessed in details. The method used in this study is available in the relative warm forming processes and die design. It is helpful to increase the additional value of products and promote the level of competition in manufacturing industry.

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“…Moreover, mechanical energy of plastic deformation is converted into heat during the process of the metal deformation, which also affects solving of temperature distribution. Thus, the idea of solving velocity and temperature fields in an integrated manner has been proposed in literature [5][6][7]. The integrated methods of solving velocity and temperature fields can be generally classified into two categories, i.e.…”

Section: Introductionmentioning

confidence: 99%

A Modified Coupling Method to Solve the Integrated Equations of Velocity and Temperature Fields in 3D FEM

Song

Liu

et al. 2011

AMR

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During the rolling process, temperature is an important factor that affects the die and the work-piece in metal forming procedure. The metal deformation is often carried along with the variety of temperature. Moreover, mechanical energy of plastic deformation is converted into heat during the metal deformation process. Thus, it is necessary to couple the deformation and thermal behaviors in an integrated manner in numerical simulation so as to improve the simulation accuracy. In this paper, we use a 3D rigid-plastic Finite Element Method (FEM) to simulate the hot rolling process by coupling the thermal effects. Based on the 3D FEM model, integrated equations of coupling velocity and temperature fields are formulated. The uniform of integrated equations is obtained by re-indexing the combination sequences and then a modified coupling method is proposed to solve the resulted equations. The numerical experiments are carried on the real data collected from a steel plant. A good agreement between the numerical result and measured value shows the availability of the proposed coupling method.

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The coupled thermo-mechanical analysis in the upsetting process by the dynamic FEM

Cited by 10 publications

References 5 publications

Simulation and optimization of hot extrusion process to produce rectangular waveguides

Simulation and optimization of hot extrusion process to produce rectangular waveguides

A Study on the Warm Forging-Flaring Process of Brass Tube

A Modified Coupling Method to Solve the Integrated Equations of Velocity and Temperature Fields in 3D FEM

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