| 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 |
Plane Strain Analysis of Sheet Metals for Constitutive, Formability, and Fracture Characterization |
| Author(s) |
Armin Abedini, Jacqueline Noder, Timothy Wang, Farinaz Khameneh, Cliff Butcher |
| On-Site Speaker (Planned) |
Armin Abedini |
| Abstract Scope |
The plane-strain condition leads to a tensile biaxial stress state and is an extremum point for a yield function. Moreover, most materials exhibit their lowest ductility under the plane-strain state. In the present study, a wide variety of plane-strain specimen geometries were considered including notched tensile, butterfly, v-bend, and Nakazima/Marciniak specimens for three different automotive materials. The experiments were performed with the aid of DIC techniques to reveal the distribution of strains. Furthermore, a strain correction technique was utilized to determine fracture strains under the plane-strain condition. A consequence of the plane-strain test is that deformation is often inhomogeneous in the gauge region which makes it significantly challenging to extract the stress-strain response of the materials in plane-strain tension. Therefore, inverse finite element simulations of notch specimens were conducted to investigate calibration of anisotropic yield surfaces and their implications considering a new calibration technique involving generalized plane-strain constraints were discussed. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |