Analysis of stress and strain distributions in slab rolling using an elastic-plastic finite-element method

✍ Scribed by C. Liu; P. Hartley; C. E. N. Sturgess; G. W. Rowe

• Publisher: John Wiley and Sons
• Year: 1988
• Tongue: English
• Weight: 634 KB
• Volume: 25
• Category: Article
• ISSN: 0029-5981
• DOI: 10.1002/nme.1620250107

✦ Synopsis

The cold rolling of rectangular section slabs is analysed for a range of width-to-height ratios (one to three) for which spread of the workpiece is appreciable. This necessitates the use of a three-dimensional model. An elastic-plastic finite-element method is used to provide a complete description of the slab rolling process.

The pressure distribution at the workpiece/roll interface is found to show the typical 'friction-hill' observed in near-plane-strain experiments, but the pressure varies across the width of the interface. The shear-stress distribution a t the roll interface provides detailed information about the 'neutral line' which is usually assumed to occur where the shear stress changes direction. The 3-D analysis shows clearly that there is a flow divide in both longitudinal and transverse directions.