Vol. 5, No. 1, 2010

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ISSN: 1559-3959
A new method for calculating the peak temperature evolution in the adiabatic shear band of steel

Xue-Bin Wang

Vol. 5 (2010), No. 1, 95–106
Abstract

A new method for predicting the peak temperature evolution in the adiabatic shear band (ASB) of steel is proposed to overcome the drawback of the traditional method’s underestimation of the peak temperature in the ASB. The average shear strain of a thin-walled tube in torsion is divided into three parts: the elastic shear strain, the average plastic shear strain outside the ASB, and the average plastic shear strain of the ASB. The relation between the shear stress acting on the tube and the average shear strain of the tube is established. The postpeak shear stress-average shear strain curve of the ASB is found to be dependent on the gage length. As an example, the shear stress-average plastic shear strain curve of the ASB is back-calculated from the measured shear stress-average shear strain curve of an AISI 1018 cold rolled steel tube. The peak temperature and average temperature in the ASB are calculated and compared with the experimental result. It is found that the calculated peak temperature is closer to or slightly higher than the experimental result. The latter is a satisfactory result due to the underestimated peak temperature in the ASB in experiments.

Keywords
adiabatic shear band, steel, torsion, shear stress, shear strain
Milestones
Received: 13 March 2009
Revised: 20 July 2009
Accepted: 30 July 2009
Published: 19 April 2010
Authors
Xue-Bin Wang
Department of Mechanics and Engineering Sciences
Liaoning Technical University
Fuxin 123000
China