Development of a Rolling Process Design Tool for Use in Improving Hot Roll Slab Recovery

Couch, R ; Wang, P

Lawrence Livermore National Laboratory

关键词: Modifications;    Fractures;    Rolling;    Simulation;    42 Engineering;   

DOI  :  10.2172/15005025
RP-ID  :  UCRL-ID-139582-Q2-FY03
RP-ID  :  W-7405-ENG-48
RP-ID  :  15005025

美国|英语

来源: UNT Digital Library

【 摘 要 】

In this quarter, our primary effort has been focused on model verification, emphasizing on consistency in result for parallel and serial simulation runs, Progress has been made in refining the parallel thermal algorithms and in diminishing discretization effects in the contact region between the rollers and slab. We have received the metrology data of the ingot profile at the end of the fifth pass from Alcoa. Detailed comparisons between the data and the initial simulation result are being performed. Forthcoming from Alcoa are modifications to the fracture model based on additional experiments at lower strain rates. The original fracture model, was implemented in the finite element code, but damage in the rolling simulation was not correct due to the modeling errors at lower strain rates and high stress triaxiality. Validation simulations for the fracture model will continue when the experimentally-based adjustments to the parameter values become available.