Finite Element Modeling of Ring Rolling Processes

Finite element simulation of ring rolling processes has long been considered as a challenging task among conventional bulk forming processes. Two distinctive features that make ring rolling model more difficult than others are: large rotational speed compared to the rate of cross-sectional deformati...

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Bibliographic Details
Main Authors: Jinn, Jong-Tae, Wu, Wei-Tsu
Format: Conference Proceeding
Language:English
Subjects:
Brick
Computer simulation
Construction
Contact
Cross sections
Deformation
Demand
Finite element method
Forming
Marketing
Mathematical analysis
Mathematical models
Representations
Ring rolling
Rotational
Stabilization
Tasks
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Summary:Finite element simulation of ring rolling processes has long been considered as a challenging task among conventional bulk forming processes. Two distinctive features that make ring rolling model more difficult than others are: large rotational speed compared to the rate of cross-sectional deformation and small contact region. Thus, it demands a small time step and consequently results in very long simulation time using the conventional method. In order to provide a practical solution method for ring rolling simulation, a new method is proposed under the framework of quasi-static implicit finite element methods. This method has been implemented into the commercial code DEFORM(TM) system recently. In this paper, some topics related to the new method are discussed including the internal construction of FE model with brick and beam elements, a scheme for the stabilization of ring motion, the representation of contact surface, and the updating schemes. Several numerical examples for the validation of the proposed method are presented.
ISSN:0094-243X
DOI:10.1063/1.3457636