Chapter

Materials with Complex Behaviour II

Volume 16 of the series Advanced Structured Materials pp 213-227

Date:

Numerical Investigation of Chatter in Cold Rolling Mills

  • S. K. DwivedyAffiliated withMechanical Engineering Department, Indian Institute of Technology Guwahati Email author 
  • , S. S. DhutekarAffiliated withMechanical Engineering Department, Indian Institute of Technology Guwahati
  • , P. EberhardAffiliated withInstitute of Engineering and Computational Mechanics, University of Stuttgart

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Abstract

In this work, considering a four high cold rolling mill and using a dynamic friction model, expressions for the variation of pressure in the roll bite have been developed. The effects of parameters used in the dynamic friction model on the variation of pressure and shear stress are investigated. The numerically obtained horizontal and vertical work roll deflections using the dynamic friction model have been compared with those obtained by the conventionally used constant friction model. The effects of rolling parameters like strip thickness; periodic back tension and strip velocity on the work roll deflections have been studied. This work will find applications in predicting the critical system parameters in cold rolling to avoid chatter.

Keywords

Chatter Cold rolling mill Dynamic friction model Constant friction model Roll bite