In the present investigation, a previously developed three-dimensional finite-element model for the cross-wedge rolling (CWR) process has been used to characterize the workpiece material stress and deformation behavior. Particular attention has been paid to the center and mid-radius points of the billet where internal defects (i.e. internal cracks and porous voids) often occur. Several failure criteria in the solid mechanics theory are summarized. The effect of three important CWR parameters, namely the forming angle, the area reduction, and the friction coefficient, on the field variables has been investigated, including the first principal stresses, maximum shear stresses, etc. A total of 14 rolling conditions are analyzed for the billet material aluminum alloy 1100. After initially verifying the numerical results, several tendencies for the CWR process, as related to failure, are ascertained and discussed.
|Number of pages
|International Journal of Mechanical Sciences
|Published - Jul 2000
Bibliographical noteFunding Information:
The authors gratefully thank the Department of Mechanical Engineering, the Center for Robotics and Manufacturing Systems, and the Center for Computational Sciences at the University of Kentucky for funding this research.
ASJC Scopus subject areas
- Civil and Structural Engineering
- Materials Science (all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering