Numerical Treatments of Slipping/No-Slip Zones in Cold Rolling of Thin Sheets with Heavy Roll Deformation

Lubricants

Yukio Shigaki¹  Rebecca Nakhoul²  Pierre Montmitonnet² 

[1] Federal Centre of Technological Education of Minas Gerais (CEFET-MG), Belo Horizonte Unit—Campus II, Amazonas Avenue, 7675—CEP 30510-000—Belo Horizonte/MG, Brazil; E-Mail:;Centre de Mise en Forme des Matériaux (CEMEF), MINES ParisTech, PSL Research University, CNRS UMR 7635, CS 10207 Rue Claude Daunesse, Sophia Antipolis Cedex, 06904, France; E-Mail:

关键词: strip rolling;    modeling;    Finite Element Method;    Slab method;    slip;    friction;    regularization;   

DOI  :  10.3390/lubricants3020113

来源: mdpi

【 摘 要 】

In the thin sheet cold rolling manufacturing process, a major issue is roll elastic deformation and its impact on roll load, torque and contact stresses. As in many systems implying mechanical contact under high loading, a central part is under “sticking friction” (no slip) while both extremities do slip to accommodate the material acceleration of the rolled metal sheet. This is a crucial point for modeling of such rolling processes and the numerical treatment of contact and friction (“regularized” or not), of the transition between these zones, does have an impact on the results. Two ways to deal with it are compared (regularization of the stick/slip transition, direct imposition of a no-slip condition) and recommendations are given.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.