شماره ركورد كنفرانس :
4560
عنوان مقاله :
Study of the Creep Behaviour with Prandtl Law Constitutive Equation for Cold-Drawn 304L Stainless Steel
Author/Authors :
A. H Daei Sorkhabi Department of Mechanical Eng. - Tabriz Branch Islamic Azad University, Tabriz , F Vakili Tahami Department of Mechanical Eng. - University of Tabriz, Tabriz , M Zehsaz Department of Mechanical Eng. - University of Tabriz, Tabriz , F. R Biglari Department of Mechanical Eng. - Amirkabir University of Technology, Tehran
كليدواژه :
Cold-drawn 304L stainless steel , Experimental study , Creep , Prandtl law , Constitutive equation
عنوان كنفرانس :
The Bi-Annual International Conference on Experimental Solid Mechanics and Dynamics ۲۰۱۶
چكيده لاتين :
In this paper Prandtl law constitutive equation (sine hyperbolic) has been proposed to study the creep behaviour of cold-drawn 304L stainless steel. For this purpose, the material and physical parameters for the creep constitutive equation has been determined using experimental data. The creep behaviour and properties for this material were examined by conducting uni-axial creep tests. Test samples have been obtained from cold-drawn bars and the material conforms to ASTM A276-05a specifications. Constant temperature and constant load of uni-axial creep tests have been carried out at three temperatures of 680,700 and 720oC, subjected to initial stresses of 320, 340 and 360 MPa. The experimental data have been used to obtain the creep constitutive parameter for Prandtl law using numerical optimization techniques. The results show that the constitutive equations in the form of Prandtl law provide agreement with experimental data.
