| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Real Time Imaging
|
| Presentation Title |
Determination of Strain Path Envelope in an Optimized Biaxial Cruciform Specimen of AISI 1008 Steel under Linear, Bilinear, and Nonlinear Strain Paths |
| Author(s) |
Jordan Hoffman, Dilip Kumar Banerjee, Mark Iadicola |
| On-Site Speaker (Planned) |
Dilip Kumar Banerjee |
| Abstract Scope |
The automotive industry uses sheet metal forming processes for many components. The material data, traditionally obtained from uniaxial testing, is insufficient and results in long trial and error periods and premature failures. Biaxial cruciform testing is appropriate for forming processes as sheet metals are anisotropic, but it requires special geometries to reach various biaxial strain combinations. Although cruciform specimens can be used for nonlinear strain paths, they are mostly used for linear paths and often suffer biaxial failures at strains well below the forming limit strains. An optimized AISI 1008 steel cruciform geometry was recently determined that reaches strain uniformity and failure in the gauge area under equibiaxial strain paths. This study investigates the strain path envelope of this optimized specimen, determines the strains under linear, bilinear, and nonlinear tensile loading, and ascertains the right displacement control paths needed for a chosen linear/nonlinear strain path through an optimization procedure. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Shaping and Forming, Modeling and Simulation |