Title

Modeling and Simulation of Hot Rolling using Nonlinear Material Models

Abstract

A Johnson-Cook material model was implemented in a commercial finite element code to simulate a two-stand thermo- mechanical tandem hot rolling process of a round bar. The finite element model incorporates experimental data obtained from Gleeble tests performed over a range of strain rates and temperatures. The critical parameters are monitored in the cross-section during two pairs of consecutive passes with bar cross section changing from round to oval and oval to round through each roll pair. Strain and strain rate distribution at each pass are determined for round bar. Equivalent plastic strain and plastic strain in each direction are compared with each other. Strain histories of different region on cross section are studied. Strain rate distribution on contact region is investigated. Results show specific distribution and history for strain and strain rate during round bar hot rolling process.

Meeting Name

International Conference on Advances in Product Metallurgy of Long and Forged Products (2015: Jul. 12-15, Vail, CO)

Department(s)

Mechanical and Aerospace Engineering

Second Department

Materials Science and Engineering

Keywords and Phrases

Hot Rolling; Round Bar; Mass Flow; Finite Element; Constitutive Material Model; Strain Rate

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2015 Association for Iron & Steel Technology (AIST)

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