NUMERICAL SIMULATION STUDY ONDEFORMATION UNIFORMITY OF EQUALCROSS SECTION LATERAL EXTRUSION

摘要

Equal cross section lateral extrusion (ECSLE) is an effective method realizing pure sheardeformation. The influence of friction fact1or on the deformation uniformity of ECSLE wasinvestigated with rigid plastic finite element method. The result shows that the non-uniformdeformation in extrusion is caused mainly by the friction between workpiece and die. Thehigher the friction factor is, the more uneven plastic deformation resulted in extrudedworkpiece. The relation curve of deformation uniformity vs. friction factor was drawn based onthe analysis result. The curve can be used as a basis of ECSLE process design.