Constitutive Equations for Finite Element Simulation

Carlo Bruni; Mohamad El Mehtedi

doi:10.4028/www.scientific.net/KEM.504-506.499

Paper Titles

An Investigation of the Material Flow in a Screw Extruder of Aluminium Using Contrast Material
p.475

Manufacturing of Steel-Reinforced Aluminum Products by Combining Hot Extrusion and Closed-Die Forging
p.481

Effect of Process Parameters on Seam Weld Quality of ZM21 Tubes
p.487

Metal Flow in Two-Hole Extrusion of Al-Alloys Studied by FEA with Experiments
p.493

Constitutive Equations for Finite Element Simulation
p.499

The Model for Coupled Simulation of Thin Profile Extrusion
p.505

Comparison between FEM Simulations and Analytical Calculations of Required Force for Al Extrusion
p.511

Numerical Approach for the Evaluation of Seam Welding Criteria in Extrusion Processes
p.517

Effect of Porthole Design and Welding Chamber Dimensions on Material Flow and Weld Deformability of Extruded Aluminium Profiles
p.523

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Constitutive Equations for Finite Element Simulation

Abstract:

The necessity to simulate extrusion processes requires the knowledge of the material in terms of the constitutive equations. The present investigation deals with the development of a methodology based on the multivariable regression analysis in order to predict the flow behaviour of a ZEK200 Mg alloy in the interval of temperature varying between 150 and 450°C. The proposed models relate the flow curve levels with temperature, strain rate and deformation with the variables selected using the statistical method. It has been found that the proposed methodology allows the modeling of the flow behaviour of the Mg alloy under investigation from the beginning of the plastic deformation down to the softening phase taking into account the peak value. In addition, it is comparable, in terms of the temperature intervals considered in the modeling, with the Sellars and Tegart-based models.

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Periodical:

Key Engineering Materials (Volumes 504-506)

Pages:

499-504

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.504-506.499

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Online since:

February 2012

Authors:

Carlo Bruni, Mohamad El Mehtedi

Keywords:

Constitutive Equation, Extrusion Processes, Mg Alloy ZEK 200, Modeling

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References

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