Effect Of Thermal Conductivity On The Initiation, Growth And Bandwidth Of Adiabatic Shear Bands

Author

R. C. Batra, Missouri University of Science and Technology
Chang-Soo Kim, Missouri University of Science and TechnologyFollow

Abstract

We ascertain the effect of thermal conductivity on the initiation and growth of shear bands in a structural steel by analyzing the development of shear bands in a block undergoing overall adiabatic simple shearing deformations. The material of the block is assumed to exhibit strain and strain-rate hardening, and thermal softening. Three constitutive relations, namely, the Litonski law, the Bodner-Partom law, and the Johnson-Cook law, have been used to model the thermoviscoplastic response of the material. For each material model, five values of thermal conductivity differing by three orders of magnitude have been used. It is found that an increase in the value of the thermal conductivity delays the initiation and slows down the subsequent development of the shear band. For the Litonski law and Johnson-Cook law, the band width tends to zero as the thermal conductivity approaches zero. However, for the Bodner-Partom law, the band width is non-zero even when the thermal conductivity is set equal to zero. © 1991.

Recommended Citation

R. C. Batra and C. Kim, "Effect Of Thermal Conductivity On The Initiation, Growth And Bandwidth Of Adiabatic Shear Bands," International Journal of Engineering Science, vol. 29, no. 8, pp. 949 - 960, Elsevier, Jan 1991.

The definitive version is available at https://doi.org/10.1016/0020-7225(91)90168-3

Department(s)

Mechanical and Aerospace Engineering

Second Department

Electrical and Computer Engineering

Third Department

Chemical and Biochemical Engineering

International Standard Serial Number (ISSN)

0020-7225

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2023 Elsevier, All rights reserved.

Publication Date

01 Jan 1991