FE Analysis of the Applicability of the Shear-Compression Testing to the Modeling of the Asymmetric Rolling Process

Abstract

The mechanism of a severe plastic deformation during asymmetric rolling comes from its large equivalent strain, which is composed of a compressive strain and additional shear strain. Physical simulation of shear strain, which is similar to that occurring in asymmetric rolling processes, is very important for design of technology of ultrafine grain material production. Shear testing is complicated because a state of large shear is not easily achievable in most specimen geometries. Application of the shear-compression testing and specimen geometry to physical simulation of asymmetric rolling is discussed in the paper. The results of the numerical simulation and comparison of the stress-strain state during shear-compression testing and asymmetric sheet rolling are presented. The results of the investigation can be used to optimize the physical simulation of asymmetric rolling processes and for the design of the technology for ultrafine grain material production by means of a severe plastic deformation.