Calculation of Deformation-Related Quantities in a Hot-Rolling Process

Autor:	Franci Vode, Simon Malej, Franc Tehovnik, Boštjan Arh, Bojan Podgornik
Rok vydání:	2023
Předmět:	true stress vs. true strain transfer function average flow stress flow-stress derivative work done per unit deformation General Materials Science
Zdroj:	Materials; Volume 16; Issue 7; Pages: 2787
ISSN:	1996-1944
DOI:	10.3390/ma16072787
Popis:	The hot deformation of metal as a nonlinear system is mathematically described by a local linear model associated with the working conditions using a transfer function (TF) in the Laplace domain. Experimental data (true stress vs. true strain curves) are obtained using the established compressive uniaxial deformation test, where experimental conditions (strain rate and temperature) define the working conditions of the local linear TF model, which is intrinsically a function of strain. Based on the TF model, three important physical quantities of the tested metal are determined exactly: the work done per unit deformation, the average flow stress, and the flow-stress derivative with respect to the strain based on a particular TF. The exactly determined quantities, determined as a function of strain, can replace the previously used approximations in some rolling force and torque calculations.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cac7b0079ff304e453d5f2491ca653e6 https://doi.org/10.3390/ma16072787 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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