Skrew Rolling of Balls in Multiple Helical Impressions

2013 ◽  
Vol 58 (4) ◽  
pp. 1071-1076 ◽  
Author(s):  
J. Tomczak ◽  
Z. Pater ◽  
J. Bartnicki
Keyword(s):  
Finite Element Method ◽  
Thermal Analysis ◽  
Finite Element ◽  
Numerical Analysis ◽  
Experimental Research ◽  
Three Dimensional ◽  
Rolling Process ◽  
Skew Rolling ◽  
Made In ◽  
Complex Thermal Analysis

Abstract This paper presents results of theoretical and experimental research on skew rolling process of balls with diameter ;30 mm in multiple helical tools. Numerical analysis of the process was conducted basing on finite element method (FEM), using the commercial software Simufact Forming in version 10.0. Simulations were made in the three-dimensional state of strain with consideration of complex thermal analysis, due to which progression of the products shape was determined. Distributions of strains and temperatures as well as the process force parameters were also determined. The results of numerical calculations were experimentally verified in laboratory conditions. The obtained results confirmed the possibility of semi-finished products of balls type manufacturing by means of rolling in multiple helical impressions.

scholarly journals Numerical analysis of temperature field during hardfacing process and comparison with experimental results

2014 ◽  
Vol 18 (suppl.1) ◽  
pp. 113-120 ◽  
Author(s):  
Vukic Lazic ◽  
Ivana Ivanovic ◽  
Aleksandar Sedmak ◽  
Rebeka Rudolf ◽  
Mirjana Lazic ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Thermal Analysis ◽  
Finite Element ◽  
Temperature Field ◽  
Numerical Analysis ◽  
Open Source ◽  
Three Dimensional ◽  
Experimental Results ◽  
Moving Heat Source ◽  
The Finite Element Method

The three-dimensional transient nonlinear thermal analysis of the hard facing process is performed by using the finite element method. The simulations were executed on the open source Salome platform using the open source finite element solver Code_Aster. The Gaussian double ellipsoid was selected in order to enable greater possibilities for the calculation of the moving heat source. The numerical results were compared with available experimental results.

scholarly journals The influence of busbars connection on fuselink temperature at fast fuses

2019 ◽  
Vol 32 (2) ◽  
pp. 303-314
Author(s):  
Adrian Plesca
Keyword(s):  
Finite Element Method ◽  
Thermal Analysis ◽  
Finite Element ◽  
Thermal Behaviour ◽  
Software Package ◽  
Thermal Model ◽  
Three Dimensional ◽  
Real Situation ◽  
Load Variations ◽  
The One

The paper, based on three-dimensional thermal modelling and simulation finite element method software package, presents a comparison between the thermal behaviour of a fast fuse without busbar terminals and the one with these busbars mounted on it. The maximum fuselink temperature is lower in the second case when the thermal model had taken into consideration the busbar connections, actually, the real situation. Also, a thermal analysis for different type of load variations has been done in both cases of the fast fuse geometry with and without busbar terminals.

A Three-Dimensional Finite Element Method for Nonsteady State Temperature Distribution in the Rolling Process

2011 ◽  
Vol 101-102 ◽  
pp. 521-524
Author(s):  
Shu Ni Song ◽  
Jing Yi Liu
Keyword(s):  
Finite Element Method ◽  
Boundary Condition ◽  
Finite Element ◽  
Temperature Distribution ◽  
Three Dimensional ◽  
Rolling Process ◽  
Linear Boundary ◽  
Linear Boundary Condition ◽  
Non Linear ◽  
Metal Deformation

The temperature is a key factor that affects the metal deformation and the material property in the rolling process. The metal deformation is often carried along with the variety of temperature. Moreover, the plastic work is converted into the thermal energy during the process of the metal deformation. Therefore, the numerical simulation of the rolling process should take the temperature factors into consideration to improve the prediction accuracy. In this paper, we use the full three-dimensional Rigid-plastic finite element method to predict the temperature distribution which relate to linear or non-linear boundary condition of the free surface. Based on the simulation, the impact of radiant heat-transfer coefficient on the temperature prediction can be obtained. The comparison of the calculated results between the linear and non-linear boundary conditions demonstrates that the temperature obtained on the linear boundary condition has higher accurateness than that obtained on the non-linear boundary condition.

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