Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8038754 | CIRP Annals - Manufacturing Technology | 2018 | 4 Pages |
Abstract
Since an inhomogeneous punch pressure distribution occurs in the Nakajima test, equibiaxial flow curves have been determined solely in the hydraulic bulge test so far. By using an innovative measurement technique, it is possible to determine both the punch pressure and strains that occur in the Nakajima test. In this paper, a calibration and realization strategy is presented that allows to determine accurate equibiaxial flow curves for sheet metal materials using a modified Nakajima test without inverse parameter identification. This setup is suitable to substitute the expensive and time-consuming hydraulic bulge test by a simple and common experimental setup.
Keywords
Related Topics
Physical Sciences and Engineering
Engineering
Industrial and Manufacturing Engineering
Authors
Matthias Eder, Christian Gaber, Winfried Nester, Hartmut Hoffmann, Wolfram Volk,