TY - GEN
T1 - Single- and multi-stand chatter models in tandem rolling mills
AU - Zhao, Huyue
AU - F. Ehmann, Kornel
N1 - Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2009
Y1 - 2009
N2 - Many different modes of chatter and their possible causes have been identified after years of research, yet no clear and definite theory of their mechanics has been established. One of the most important reasons for this can be attributed to the fact that only oversimplified models with a single input and a single output were historically used to formulate chatter in rolling. Such a situation has hindered a complete analysis of the underlying mechanisms. In this paper, a state-space representation of single- and multi-stand chatter models will be proposed in a rigorous and comprehensive mathematical form for stability analysis of the various chatter mechanisms. First, a dynamic model of the rolling process that utilizes homogeneous deformation theory will be established that includes the material strain-hardening and work roll flattening effects. By coupling this dynamic rolling process model with a structural model for mill stands, a single-stand chatter model in a state-space representation will be proposed. Based on the single-stand chatter model, a multi-stand chatter model will be formulated by incorporating the inter-stand tension variations and the time delay effect of the strip transportation. A simulation program will also be presented for the study of the dynamic rolling process in the time domain and for verifying the results from stability analysis.
AB - Many different modes of chatter and their possible causes have been identified after years of research, yet no clear and definite theory of their mechanics has been established. One of the most important reasons for this can be attributed to the fact that only oversimplified models with a single input and a single output were historically used to formulate chatter in rolling. Such a situation has hindered a complete analysis of the underlying mechanisms. In this paper, a state-space representation of single- and multi-stand chatter models will be proposed in a rigorous and comprehensive mathematical form for stability analysis of the various chatter mechanisms. First, a dynamic model of the rolling process that utilizes homogeneous deformation theory will be established that includes the material strain-hardening and work roll flattening effects. By coupling this dynamic rolling process model with a structural model for mill stands, a single-stand chatter model in a state-space representation will be proposed. Based on the single-stand chatter model, a multi-stand chatter model will be formulated by incorporating the inter-stand tension variations and the time delay effect of the strip transportation. A simulation program will also be presented for the study of the dynamic rolling process in the time domain and for verifying the results from stability analysis.
KW - Rolling dynamics
KW - Rolling stability
KW - Self-excited vibration
KW - Third-octave-mode chatter
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U2 - 10.1115/MSEC_ICMP2008-72530
DO - 10.1115/MSEC_ICMP2008-72530
M3 - Conference contribution
AN - SCOPUS:77951263878
SN - 9780791848517
T3 - Proceedings of the ASME International Manufacturing Science and Engineering Conference, MSEC2008
SP - 627
EP - 637
BT - Proceedings of the ASME International Manufacturing Science and Engineering Conference, MSEC2008
T2 - ASME International Manufacturing Science and Engineering Conference, MSEC2008
Y2 - 7 October 2008 through 10 October 2008
ER -