Investigations on residual stress generation in full-forward-extrusion

Journal article

Publication Details

Author(s): Landkammer P, Jobst A, Kiener C, Steinmann P, Merklein M
Journal: Production Engineering
Publication year: 2019
ISSN: 0944-6524
eISSN: 1863-7353


Within cold-forming processes, the influence of forming induced residual stresses is a critical issue regarding the life-time
behaviour of the formed components. However, a targeted use of forming-induced residual stresses is also capable to improve
the components properties. The rotation-symmetrical full-forward extrusion is used as a reference process to investigate the
generation of residual stresses within manufacturing. A novel and generally applicable computational evaluation procedure
is introduced, which achieves to compute and visualize the evolution of the residual stress state during the entire forming
operation. Simulative results are compared with their experimental counterparts. The near-surface residual stresses in the
formed component are evaluated in axial and tangential direction by X-ray diffraction. Indentation tests are used to determine
the micro-hardness inside the components and optical instruments quantify geometrical differences.

FAU Authors / FAU Editors

Jobst, Andreas
Institute of Manufacturing Technology
Kiener, Christoph
Institute of Manufacturing Technology
Landkammer, Philipp
Lehrstuhl für Technische Mechanik
Merklein, Marion Prof. Dr.-Ing.
Institute of Manufacturing Technology
Steinmann, Paul Prof. Dr.-Ing.
Lehrstuhl für Technische Mechanik

How to cite

Landkammer, P., Jobst, A., Kiener, C., Steinmann, P., & Merklein, M. (2019). Investigations on residual stress generation in full-forward-extrusion. Production Engineering.

Landkammer, Philipp, et al. "Investigations on residual stress generation in full-forward-extrusion." Production Engineering (2019).


Last updated on 2019-06-08 at 09:04