The influence of the constitutive equation on the simulation of a hot rolling process

A New Constitutive Strain-Dependent Garofalo Equation to Describe the High-Temperature Processing of Materials—Application to the AZ31 Magnesium Alloy

“…Garofalo parameters with strain. On the other hand, from various investigations [8,24,36,54,59,60] we selected the characteristic values that are more representative of the DRX processes in the AZ31 magnesium alloy in the temperature range of our work.…”

Microstructural evolution on streamlines during hot strip rolling using internal state variables

“…The stream function model and a thermal finite difference model were coupled to predict the thermomechanical behavior during hot strip rolling. While the material behavior is considered to obey the hyperbolic-sine equation as shown below (Duan and Sheppard, 2004):…”

Flow stress behavior of two stainless steels: An experimental–numerical investigation

“…Lorenz and Esser (2003) considered the effect of the lubricant and the end geometry of work piece to have more uniformity in compression tests to find out that with fruitful lubricant and changing of geometry of the work piece one can obtain more uniform products. Duan and Sheppard (2004) compared three commonly used constitutive equations (Norton-Hoff, hyperbolic sine and Henssel) for hot deformation with respect to changes of temperature, strain and strain rate. Their experiences indicated that using a complicated constitutive equation does not necessarily mean that the results would be better than the use of a simple model such as hyperbolic sine.…”