Continuous shear—a method for studying material elements passing a stationary shear plane

Traditionally, material response to shear deformation has been studied with methods where the shear is gradually increasing from zero to the final value over a certain fixed deformation zone, e.g. in the well-known torsion test of a tube with a defined shear zone established by a machined circumferential groove. Normally shear in metal forming processes is of another nature, namely where the material elements move through a stationary shear zone, often of small width. In this paper a method enabling the simulation of this situation is presented. A tool for continuous shear has been manufactured and tested with AlMgSi1 and copper. The sheared material has thereafter been tested in plane strain compression with different orientation concerning the angle between the shear plane and the compression direction.