| About this Abstract |
| Meeting |
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Symposium
|
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Presentation Title |
Influence of Ultrasonic-assistance on the Forming Limits of Steel |
| Author(s) |
Manuel Jäckisch, Marion Merklein |
| On-Site Speaker (Planned) |
Manuel Jäckisch |
| Abstract Scope |
Since Blaha discovered the beneficial effect of superimposing high-frequency oscillations to the metal forming process, the occurring force and stress reduction are well-known phenomena. Leading to an immediate flow stress reduction, the so-called ultrasonic-assistance is a promising approach to enable forming with reduced process forces. While the feasible force reduction has been investigated intensively, only a few analyses have been conducted in the context of the impact of ultrasonic-superposition on the forming limits. Latest investigations state earlier material failure due to localized forming with high strain rates. Within this paper, the influence of superimposed vibrations on the forming limits of C35E is investigated with regard to distinct oscillation amplitudes. For this purpose, ultrasonic-assisted shear tests are carried out and compared to high-speed shear tests with similar strain rates. This way, effects only caused by the high strain rates and those resulting from the recurring cyclic loading are separated. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |