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 |
Adjusting Product Properties by Deliberate Induction of Residual Stresses in Single Point Incremental Forming |
Author(s) |
Mateus Dobecki, Fabian Maass, Marlon Hahn, A. Erman Tekkaya, Walter Reimers |
On-Site Speaker (Planned) |
Mateus Dobecki |
Abstract Scope |
Single point incremental forming (SPIF) is a flexible manufacturing process for the production of customized hollow parts. The mechanical properties of the manufactured components are highly affected by the prevailing residual stress state. The objective of this research is the improvement of the product properties by selective induction of residual stresses. The residual stress state is influenced by the forming mechanisms bending, shearing and membrane stretching. These mechanisms are triggered by adjusting the ratio of step-down increment and tool radius. Numerical and experimental analysis of groove and cone geometries shows that higher step-down increments increase bending and smaller step-down increments increase shearing. Shearing leads to higher residual stress amplitudes. The resulting targeted residual stress state can improve the fatigue strength of a component up to 42%. Through superposed tensile and compression stresses, the residual stress amplitudes can be further increased or may even be inverted. |
Proceedings Inclusion? |
Definite: At-meeting proceedings |