On the modeling of rolling: a special look at edge cracking
Halm, Katherine
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https://hdl.handle.net/2142/34397
Description
Title
On the modeling of rolling: a special look at edge cracking
Author(s)
Halm, Katherine
Issue Date
2012-09-18T21:15:01Z
Director of Research (if dissertation) or Advisor (if thesis)
Beaudoin, Armand J.
Department of Study
Mechanical Sci & Engineering
Discipline
Mechanical Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
M.S.
Degree Level
Thesis
Keyword(s)
Rolling
Edge Cracking
Finite Element Analysis
automatic mass scaling
Abstract
Large amounts of rolled sheet and strip production are reworked yearly due to defects that include edge cracking. In an effort to understand the mechanism and causes of edge cracking during rolling a finite element model was used. These models utilized the commercial package ABAQUS and its built in automatic mass scaling scheme. A subroutine (VUMAT) was developed to provide for rate dependent elasto-viscoplastic response and evolution of damage. Results of the model and damage are presented for differing lay-on temperatures, width to thickness ratios, edge shapes, frictional values, and asymmetric rolling. In addition, tips on modeling rolling and secondary tensile stresses are discussed.
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