EVALUATION OF CYCLIC FLOW CURVES FOR THE CALCULATION OF SHEET METAL FORMING PROCESSES

Abstract

In order to prove the Bauschinger effect the cyclic flow curves of the materials AIMg3 and C10 have been determined by help of a low-cycle test. The functionality of flow stress and accumulated plastic deformation has been computed for both static and cyclic loading. Beside the cyclically variform flow stress the notion of the equivalent flow stress to be determined out of the static and cyclic loading characteristics has been introduced. It can be stated from our measurements that the Bauschinger effect cannot be neglected at the cyclic sheet metal forming processes.