Approximation model of the stress-strain curve for deformation of aluminium alloys

Abstract

The main purpose of this paper is to give a mathematical description of flow stress of examined aluminium alloys on the basis of upsetting tests perdormed in a servohydraulic plastomer. Deformation curves have been described by means of the Sellars-Tegart-Garofalo equation, with the aid of linear regression analysis by the neural network method implemented in the NEUREX program.

Keywords

• alloys
• regression analysis
• neural networks
• stress-strain curves
• compression test